diff --git a/2024/5/Makefile b/2024/5/Makefile
new file mode 100644
index 0000000..638e325
--- /dev/null
+++ b/2024/5/Makefile
@@ -0,0 +1,2 @@
+a.out: main.cpp
+	clang++ -std=c++2b -g -O0 main.cpp
diff --git a/2024/5/data.txt b/2024/5/data.txt
new file mode 100644
index 0000000..3370a8d
--- /dev/null
+++ b/2024/5/data.txt
@@ -0,0 +1,1387 @@
+46|53
+25|43
+25|66
+43|65
+43|35
+43|61
+54|83
+54|15
+54|46
+54|92
+84|23
+84|16
+84|11
+84|74
+84|88
+16|99
+16|65
+16|61
+16|66
+16|28
+16|46
+86|88
+86|61
+86|34
+86|31
+86|35
+86|27
+86|95
+61|84
+61|88
+61|92
+61|51
+61|45
+61|55
+61|34
+61|74
+23|18
+23|97
+23|99
+23|58
+23|54
+23|43
+23|89
+23|66
+23|39
+68|12
+68|55
+68|51
+68|92
+68|98
+68|74
+68|96
+68|42
+68|75
+68|14
+98|55
+98|92
+98|42
+98|45
+98|23
+98|34
+98|74
+98|73
+98|96
+98|51
+98|31
+58|86
+58|18
+58|98
+58|66
+58|25
+58|61
+58|54
+58|68
+58|43
+58|26
+58|28
+58|75
+99|51
+99|49
+99|53
+99|86
+99|66
+99|39
+99|26
+99|96
+99|98
+99|15
+99|61
+99|35
+99|65
+39|88
+39|42
+39|84
+39|53
+39|15
+39|51
+39|45
+39|92
+39|65
+39|75
+39|83
+39|12
+39|34
+39|35
+34|16
+34|45
+34|89
+34|14
+34|66
+34|74
+34|23
+34|55
+34|88
+34|12
+34|99
+34|26
+34|73
+34|62
+34|72
+65|27
+65|34
+65|55
+65|97
+65|42
+65|83
+65|22
+65|45
+65|58
+65|35
+65|12
+65|92
+65|14
+65|73
+65|64
+65|89
+88|22
+88|97
+88|12
+88|72
+88|52
+88|89
+88|64
+88|62
+88|23
+88|49
+88|26
+88|13
+88|66
+88|73
+88|18
+88|16
+88|58
+97|39
+97|43
+97|98
+97|86
+97|46
+97|16
+97|72
+97|49
+97|68
+97|26
+97|66
+97|58
+97|28
+97|22
+97|11
+97|61
+97|62
+97|18
+64|86
+64|22
+64|97
+64|18
+64|73
+64|39
+64|43
+64|26
+64|66
+64|58
+64|89
+64|46
+64|13
+64|62
+64|25
+64|68
+64|15
+64|72
+64|99
+55|26
+55|43
+55|99
+55|74
+55|86
+55|16
+55|89
+55|49
+55|97
+55|23
+55|64
+55|62
+55|25
+55|72
+55|39
+55|54
+55|58
+55|22
+55|73
+55|18
+73|16
+73|28
+73|89
+73|97
+73|25
+73|61
+73|54
+73|68
+73|43
+73|86
+73|18
+73|22
+73|58
+73|15
+73|49
+73|11
+73|72
+73|62
+73|26
+73|66
+73|13
+89|39
+89|66
+89|13
+89|62
+89|99
+89|75
+89|49
+89|16
+89|25
+89|15
+89|53
+89|98
+89|26
+89|46
+89|96
+89|72
+89|86
+89|11
+89|68
+89|43
+89|61
+89|54
+52|54
+52|55
+52|89
+52|66
+52|13
+52|11
+52|25
+52|64
+52|72
+52|74
+52|22
+52|18
+52|23
+52|97
+52|99
+52|39
+52|86
+52|62
+52|14
+52|49
+52|58
+52|73
+52|16
+18|99
+18|13
+18|35
+18|62
+18|53
+18|54
+18|28
+18|65
+18|86
+18|96
+18|49
+18|61
+18|16
+18|39
+18|15
+18|68
+18|43
+18|26
+18|98
+18|46
+18|25
+18|66
+18|75
+18|72
+66|96
+66|15
+66|98
+66|46
+66|35
+66|75
+66|92
+66|86
+66|51
+66|43
+66|83
+66|31
+66|53
+66|49
+66|39
+66|42
+66|84
+66|13
+66|28
+66|95
+66|61
+66|68
+66|54
+66|65
+74|16
+74|97
+74|73
+74|13
+74|54
+74|86
+74|26
+74|22
+74|25
+74|99
+74|66
+74|39
+74|72
+74|46
+74|11
+74|62
+74|23
+74|89
+74|18
+74|58
+74|49
+74|15
+74|64
+74|43
+95|64
+95|31
+95|97
+95|92
+95|11
+95|89
+95|12
+95|58
+95|16
+95|45
+95|52
+95|73
+95|84
+95|14
+95|72
+95|88
+95|23
+95|74
+95|55
+95|25
+95|22
+95|34
+95|18
+95|27
+27|62
+27|52
+27|64
+27|45
+27|11
+27|14
+27|12
+27|16
+27|97
+27|88
+27|66
+27|89
+27|22
+27|34
+27|73
+27|55
+27|25
+27|18
+27|74
+27|99
+27|72
+27|58
+27|23
+27|26
+14|15
+14|66
+14|64
+14|55
+14|86
+14|54
+14|58
+14|73
+14|25
+14|99
+14|13
+14|22
+14|16
+14|26
+14|89
+14|97
+14|39
+14|49
+14|62
+14|23
+14|11
+14|18
+14|72
+14|74
+96|83
+96|95
+96|35
+96|34
+96|45
+96|23
+96|97
+96|74
+96|84
+96|55
+96|88
+96|51
+96|14
+96|64
+96|31
+96|92
+96|27
+96|42
+96|12
+96|22
+96|73
+96|52
+96|65
+96|53
+75|84
+75|83
+75|65
+75|27
+75|74
+75|53
+75|88
+75|23
+75|97
+75|14
+75|92
+75|34
+75|64
+75|35
+75|51
+75|31
+75|96
+75|55
+75|52
+75|42
+75|45
+75|95
+75|73
+75|12
+13|15
+13|39
+13|98
+13|86
+13|65
+13|68
+13|61
+13|46
+13|84
+13|95
+13|28
+13|42
+13|92
+13|75
+13|53
+13|51
+13|35
+13|31
+13|43
+13|54
+13|34
+13|96
+13|27
+13|83
+49|42
+49|46
+49|95
+49|13
+49|83
+49|43
+49|54
+49|53
+49|39
+49|65
+49|86
+49|27
+49|92
+49|75
+49|31
+49|98
+49|68
+49|28
+49|96
+49|61
+49|35
+49|51
+49|84
+49|15
+45|49
+45|16
+45|11
+45|55
+45|99
+45|22
+45|58
+45|97
+45|73
+45|62
+45|74
+45|14
+45|66
+45|72
+45|25
+45|18
+45|13
+45|64
+45|26
+45|52
+45|86
+45|23
+45|89
+45|12
+42|88
+42|14
+42|74
+42|55
+42|51
+42|22
+42|34
+42|58
+42|92
+42|12
+42|52
+42|95
+42|31
+42|18
+42|83
+42|84
+42|97
+42|27
+42|45
+42|11
+42|64
+42|73
+42|89
+42|23
+35|55
+35|42
+35|58
+35|14
+35|95
+35|88
+35|52
+35|31
+35|12
+35|92
+35|51
+35|83
+35|34
+35|27
+35|89
+35|97
+35|64
+35|84
+35|11
+35|73
+35|74
+35|23
+35|22
+35|45
+51|45
+51|11
+51|97
+51|74
+51|12
+51|92
+51|83
+51|55
+51|14
+51|89
+51|22
+51|25
+51|27
+51|52
+51|84
+51|23
+51|34
+51|18
+51|95
+51|58
+51|64
+51|73
+51|31
+51|88
+11|65
+11|16
+11|61
+11|13
+11|99
+11|39
+11|28
+11|43
+11|66
+11|54
+11|26
+11|98
+11|62
+11|49
+11|53
+11|15
+11|96
+11|68
+11|72
+11|86
+11|18
+11|25
+11|75
+11|46
+26|13
+26|65
+26|54
+26|28
+26|35
+26|86
+26|42
+26|96
+26|43
+26|66
+26|15
+26|68
+26|51
+26|95
+26|92
+26|49
+26|53
+26|83
+26|75
+26|46
+26|39
+26|84
+26|61
+26|98
+53|22
+53|65
+53|97
+53|95
+53|74
+53|45
+53|84
+53|12
+53|34
+53|35
+53|73
+53|52
+53|27
+53|88
+53|23
+53|14
+53|31
+53|55
+53|92
+53|51
+53|64
+53|58
+53|83
+53|42
+12|13
+12|97
+12|66
+12|49
+12|55
+12|16
+12|23
+12|26
+12|86
+12|14
+12|18
+12|52
+12|11
+12|89
+12|62
+12|99
+12|22
+12|54
+12|74
+12|58
+12|73
+12|25
+12|64
+12|72
+92|23
+92|27
+92|25
+92|22
+92|18
+92|34
+92|11
+92|89
+92|88
+92|55
+92|97
+92|52
+92|72
+92|62
+92|12
+92|74
+92|31
+92|45
+92|73
+92|14
+92|16
+92|58
+92|99
+92|64
+62|98
+62|26
+62|39
+62|96
+62|49
+62|95
+62|53
+62|65
+62|54
+62|51
+62|61
+62|42
+62|66
+62|46
+62|15
+62|83
+62|43
+62|35
+62|86
+62|68
+62|75
+62|13
+62|84
+62|28
+22|86
+22|98
+22|18
+22|54
+22|99
+22|61
+22|75
+22|13
+22|28
+22|25
+22|72
+22|43
+22|16
+22|58
+22|49
+22|11
+22|26
+22|66
+22|15
+22|68
+22|89
+22|39
+22|46
+22|62
+28|84
+28|96
+28|42
+28|65
+28|95
+28|45
+28|64
+28|98
+28|61
+28|31
+28|52
+28|27
+28|92
+28|55
+28|14
+28|34
+28|74
+28|53
+28|35
+28|51
+28|75
+28|88
+28|12
+28|83
+72|53
+72|96
+72|39
+72|42
+72|43
+72|35
+72|86
+72|54
+72|51
+72|62
+72|65
+72|46
+72|83
+72|28
+72|66
+72|26
+72|75
+72|68
+72|13
+72|99
+72|61
+72|98
+72|49
+72|15
+83|45
+83|92
+83|64
+83|14
+83|97
+83|31
+83|73
+83|88
+83|22
+83|16
+83|95
+83|27
+83|12
+83|84
+83|55
+83|74
+83|18
+83|11
+83|25
+83|89
+83|34
+83|23
+83|58
+83|52
+31|52
+31|64
+31|14
+31|74
+31|88
+31|72
+31|27
+31|58
+31|26
+31|23
+31|99
+31|11
+31|45
+31|89
+31|73
+31|34
+31|12
+31|16
+31|55
+31|22
+31|97
+31|25
+31|62
+31|18
+15|61
+15|88
+15|84
+15|28
+15|96
+15|95
+15|35
+15|27
+15|53
+15|51
+15|45
+15|52
+15|75
+15|42
+15|65
+15|12
+15|83
+15|68
+15|34
+15|46
+15|43
+15|31
+15|98
+15|92
+46|34
+46|84
+46|52
+46|95
+46|83
+46|55
+46|61
+46|28
+46|65
+46|31
+46|98
+46|42
+46|12
+46|75
+46|92
+46|45
+46|35
+46|96
+46|51
+46|27
+46|68
+46|88
+46|14
+25|53
+25|26
+25|46
+25|49
+25|54
+25|35
+25|61
+25|98
+25|75
+25|68
+25|15
+25|99
+25|86
+25|72
+25|28
+25|65
+25|13
+25|62
+25|39
+25|96
+25|42
+25|16
+43|45
+43|52
+43|96
+43|53
+43|12
+43|51
+43|92
+43|98
+43|83
+43|46
+43|84
+43|68
+43|42
+43|88
+43|31
+43|75
+43|14
+43|27
+43|95
+43|34
+43|28
+54|95
+54|84
+54|43
+54|39
+54|45
+54|27
+54|35
+54|51
+54|42
+54|31
+54|75
+54|61
+54|34
+54|65
+54|88
+54|68
+54|96
+54|98
+54|53
+54|28
+84|27
+84|64
+84|34
+84|58
+84|73
+84|31
+84|97
+84|72
+84|52
+84|99
+84|14
+84|22
+84|55
+84|12
+84|45
+84|92
+84|25
+84|18
+84|89
+16|42
+16|39
+16|51
+16|98
+16|75
+16|53
+16|13
+16|35
+16|62
+16|54
+16|86
+16|49
+16|96
+16|26
+16|43
+16|15
+16|68
+16|72
+86|28
+86|15
+86|65
+86|46
+86|98
+86|43
+86|39
+86|42
+86|84
+86|83
+86|68
+86|96
+86|51
+86|54
+86|75
+86|92
+86|53
+61|31
+61|64
+61|42
+61|65
+61|52
+61|96
+61|95
+61|75
+61|12
+61|83
+61|98
+61|23
+61|27
+61|14
+61|35
+61|53
+23|22
+23|13
+23|26
+23|86
+23|16
+23|46
+23|28
+23|25
+23|11
+23|15
+23|73
+23|68
+23|62
+23|49
+23|72
+68|28
+68|53
+68|34
+68|65
+68|35
+68|45
+68|88
+68|83
+68|84
+68|31
+68|27
+68|52
+68|95
+68|61
+98|88
+98|27
+98|75
+98|53
+98|52
+98|35
+98|83
+98|14
+98|64
+98|12
+98|84
+98|65
+98|95
+58|16
+58|96
+58|13
+58|46
+58|11
+58|62
+58|89
+58|49
+58|72
+58|39
+58|15
+58|99
+99|54
+99|43
+99|46
+99|75
+99|95
+99|28
+99|83
+99|68
+99|42
+99|62
+99|13
+39|61
+39|98
+39|95
+39|28
+39|43
+39|46
+39|27
+39|68
+39|96
+39|31
+34|58
+34|18
+34|52
+34|25
+34|64
+34|22
+34|11
+34|49
+34|97
+65|74
+65|95
+65|31
+65|51
+65|88
+65|52
+65|23
+65|84
+88|99
+88|11
+88|55
+88|25
+88|14
+88|74
+88|45
+97|89
+97|15
+97|99
+97|54
+97|25
+97|13
+64|16
+64|11
+64|23
+64|54
+64|49
+55|15
+55|66
+55|11
+55|13
+73|99
+73|46
+73|39
+89|18
+89|28
+52|26
+
+97,58,11,72,99,62,13,86,54,39,43,46,68,28,61
+74,64,23,73,97,22,58,89,11,25,72,99,62,26,66,49,13,86,39,15,43
+96,35,42,95,92,12,74,64,97
+74,23,97,58,89,11,18,25,16,72,99,62,26,66,49,13,86,54,39,15,43
+12,72,52,14,23,62,49,89,11,66,45,25,22,18,13
+64,25,11,14,62,99,55,26,97,74,34,22,66,58,73
+26,49,13,86,54,39,28,61,96,35,42,51,83,95,84
+66,49,13,86,39,15,43,46,68,28,61,75,96,53,65,35,42,51,95,84,92
+64,58,89,25,99,62,86,39,46
+68,28,61,98,75,96,65,35,51,95,84,92,27,34,88,45,12
+25,62,49,15,28,65,35
+84,92,31,27,34,88,45,12,52,14,55,74,73,97,22,58,89
+51,88,14,64,84,58,83,34,22,27,92,55,12,42,95,74,73,65,97,35,31,45,23
+52,45,66,74,55,64,34,16,58
+26,13,68,61,98,75,96,42,84
+74,64,23,73,25,16,72,26,49,86,54,15,43
+73,99,26,72,62
+61,98,96,53,42,51,83,84,31,27,34,88,45,12,55,74,64
+16,72,99,26,66,49,13,54,39,15,43,46,68,28,75,53,65,35,42
+97,73,15,39,72,54,25,28,16,66,68
+12,25,74,99,14,34,45
+89,11,18,25,16,72,99,62,26,66,49,13,86,54,39,15,46,68,28,61,98,75,96
+88,12,73,22,31,16,84,18,34,23,11,72,45,55,27,14,74,89,92,64,97,58,52
+53,65,42,51,83,84,92,27,12,52,55,74,22
+64,97,86,26,49,23,22,14,73,16,11,13,89,99,18
+89,11,18,25,16,72,26,13,54,39,43,28,98,75,96
+99,64,11,34,58,72,25,74,18,26,97,23,45,12,88,55,89,14,66,62,16,52,22
+86,54,39,15,43,46,68,28,61,98,75,96,53,65,35,42,51,83,84,92,31,27,34
+11,73,12,95,89,88,45,16,23,34,74,97,22,18,31,92,64,84,55
+68,25,46,65,61,86,96,15,35
+99,66,49,13,86,54,39,15,43,61,98,75,96,53,65,35,42,51,83
+31,42,14,95,84,97,51,27,45,88,55,64,96,34,73,53,12,74,65,35,83,92,23
+95,52,96,53,27,51,14,75,42,98,23,34,88,74,55,84,65,12,31
+27,16,12,99,25,89,55,62,14,52,18,23,97,22,31,11,72,34,64,73,58
+23,42,51,27,65,34,74,88,96,83,95,52,55,31,64
+23,97,22,58,89,11,18,16,72,99,62,26,66,13,54,39,43,46,68
+12,52,74,23,73,97,22,58,11,18,16,72,99,62,49,13,86
+49,73,43,25,86,22,89,54,62,16,15,39,11,72,13,18,64
+89,11,18,25,16,72,99,26,66,49,13,86,54,39,15,43,46,68,28,61,98,75,96
+73,97,22,89,11,18,25,16,72,99,62,66,49,13,86,54,39,43,46
+42,92,34,23,73
+98,75,96,53,65,35,42,51,83,84,92,31,27,34,88,45,12,52,14,55,74,64,23
+66,49,86,62,96,72,46,43,68,53,99,35,28,51,15
+58,72,86,66,49,18,25,89,61,22,68,62,13,98,26,54,99,46,15,39,11,16,43
+13,42,61,49,68,86,31,83,92
+64,52,86,14,66,72,89,11,54
+34,89,14,74,55,73,72,25,16,18,11,58,92
+62,26,49,54,15,43,61,98,75,96,42,51,95
+99,13,22,72,46,54,39,28,15,89,62,11,18,25,73,26,66
+14,27,34,72,84,16,55
+18,72,26,13,46,68,28,75,96,53,65
+46,68,75,96,53,42,83,95,84,34,88,45,12,52,14
+49,97,18,58,25,13,89,68,54,43,73,16,11,99,23,62,86,72,15
+86,42,51,61,43,83,92,53,46,98,68,15,75,96,34,84,35
+58,11,92,34,14,45,31,25,23,64,97,95,84,73,55
+25,26,68,98,43,28,16,66,15,54,22,13,46,61,89
+75,96,53,65,35,42,51,83,95,84,92,31,27,34,88,45,12,52,14,55,64,23,73
+12,52,14,55,74,64,23,73,97,22,58,11,25,16,72,62,26,49,86
+31,95,45,22,23,73,88,58,34,12,97
+28,98,42,46,27,53,83,88,92,12,35,84,96,61,95,14,45
+35,55,12,52,96,97,14
+96,92,12,34,75,52,27,84,73,55,14,83,23,51,95,64,74,53,65,31,42
+23,16,88,89,64,22,72,99,31,74,11
+89,99,54,22,18,72,13,58,62,39,16,15,11,66,43
+83,95,84,92,31,27,34,88,45,12,52,14,55,74,64,23,73,97,22,58,89,11,25
+46,51,84,92,13,27,35
+45,12,11,25,72,49,13
+35,65,55,12,68,31,45,98,51,61,14
+42,83,84,31,27,34,88,45,12,52,14,64,97,89,11
+83,43,27,39,35,98,28,53,75,92,46,68,95,31,51,86,42,13,54,84,61
+89,11,25,16,62,26,54,46,28,98,96
+11,16,99,62,26,66,49,86,54,39,15,43,46,68,61,98,75,96,53
+46,61,96,42,95
+15,43,58,61,26,99,18,97,72
+43,68,28,35,51,84,34,88,52
+18,16,72,99,62,26,49,13,54,39,43,46,68,28,75,53,65
+54,68,35,49,72,53,15,61,98,51,13,99,66
+61,53,65,35,51,83,31,27,34,88,12,14,55,74,64
+55,74,73,97,22,89,25,16,99,62,66,13,86,54,15
+13,86,46,75,96,65,83,92,27
+88,75,12,15,51,28,83,46,43,35,42,53,98,68,27,65,61
+51,62,28,46,15,68,53,99,75,49,72,96,39,61,42,65,66
+75,53,51,43,98,99,15,66,72,46,49
+35,42,51,83,95,84,92,31,34,88,45,12,52,14,55,74,64,23,73,97,22,58,89
+74,62,99,22,58,14,16,18,89,31,55,72,27,88,23,45,11,12,34
+28,46,45,68,51,88,35,39,31,42,95
+42,97,92,14,53,45,55,51,83,65,84,95,73,22,35
+68,96,54,53,42,46,15,13,66,98,28,26,39
+58,89,11,18,25,16,72,99,62,26,66,49,13,86,54,39,15,46,68,28,61,98,75
+96,15,42,35,26,99,75,39,72,13,53
+68,39,62,58,11,89,99,54,61,22,66,49,72,25,43,98,46,13,26,28,86,16,18
+31,88,45,14,74,25,16,99,62
+23,97,58,89,11,72,62,26,49,13,43,46,68
+58,73,64,34,12,31,84,14,27,22,35,55,65
+28,51,61,45,88,68,15,53,98,95,96,75,42,46,34,31,27,35,65,83,92,12,84
+92,34,14,74,97,22,89,16,99
+83,95,12,89,74
+53,28,86,66,15,49,61,25,96,13,46,72,62,54,11
+64,22,86,43,99,18,54,25,23,66,72,73,89,46,15,97,11,62,13
+66,45,64,74,58,97,52,73,25,16,99,49,62,18,22,23,88
+53,35,51,84,31,27,34,55,73,97,22
+15,53,61,51,83,68,75,28,39,86,65,92,42,27,98,95,84
+42,68,61,88,14,75,52,53,95,84,46,98,96
+26,72,14,88,25,66,34
+34,96,95,74,55
+46,49,68,15,13,98,28,72,54,35,96,42,26
+52,64,23,73,18,16,26,66,13
+62,26,66,49,13,86,54,39,15,46,68,28,61,98,75,96,53,65,35,42,51,83,95
+61,98,75,65,51,83,95,84,92,31,34,88,45,12,52,74,64
+83,12,95,52,53,14,22,64,45,35,74,97,42,51,73,34,65
+86,11,49,97,62,55,64,18,73
+73,97,22,18,25,16,99,66,13,86,15,46,28
+88,45,12,52,14,55,74,64,97,22,18,72,99,62,26,66,49
+16,72,49,54,98
+52,14,64,62,12,97,34,45,58,73,72,11,22,55,31
+55,83,34,73,64,75,95
+64,89,51,74,31,22,92,45,27,97,11
+18,49,86,43,98,96,65
+31,97,14,11,34,23,58,27,62,45,64,52,16,12,74,72,89,55,25
+64,12,34,25,27,83,18
+64,86,16,74,54,97,23,13,22,18,55,39,11,26,99,15,58,62,89,66,25,73,72
+18,39,28,26,15,98,54,43,61,62,89,75,99,58,16,66,49
+28,27,31,98,61,96,46,83,45,15,34
+12,84,83,14,74,31,92,97,96,55,95
+12,28,51,15,34,88,27,31,75,45,43,68,42
+68,28,75,96,65,35,42,51,83,84,92,27,12,52,55
+96,35,88,92,65,15,98,39,84,54,83,46,75,68,51
+46,68,28,61,98,75,96,65,35,42,51,83,95,84,92,31,27,34,88,12,14
+54,15,96,46,43,42,26,99,13,61,98,49,86,72,68,53,28,66,16
+43,26,62,39,11,49,54,89,13,28,15
+45,84,98,15,27,34,31,35,53,51,42,75,12,61,95,65,96,92,83,46,88
+97,58,11,25,16,62,26,66,49,86,54,39,43,46,68,28,61
+52,23,97,22,11,25,54
+18,25,72,99,62,26,66,49,86,54,39,15,43,68,98,75,96
+61,97,13,66,15,72,39,28,18,46,54,43,68,26,86,22,99,62,89,58,16
+68,96,35,51,83,84,31,45,12,52,55
+53,65,35,42,83,95,92,31,45,12,52,14,74,64,23,97,22
+97,52,83,22,25,58,64
+61,42,98,88,31,92,51,54,84,68,95,39,65,46,83,28,75
+14,64,23,22,89,11,25,72,99,62,26,49,13,54,39
+73,86,49,39,14,72,99,22,25,23,16,74,62,89,64,58,54,13,97,55,66
+49,16,97,26,13,15,89,28,86,66,43,62,22,73,68,11,54
+95,53,35,86,42
+25,66,49,39,43,98,35
+65,35,42,92,31,27,88,12,64,97,58
+42,51,95,84,92,34,88,45,55,74,64,23,73,22,11
+62,49,25,46,16
+46,96,65,51,12,52,88,42,14
+11,72,99,66,46
+11,18,25,72,99,62,26,49,86,15,46,96,53
+51,65,28,92,88,98,43,61,42,96,54
+95,54,35,34,27,86,39,83,92,15,96
+66,15,98,26,46,39,28,83,54,49,35,61,51,53,86
+34,42,43,28,61,65,68,83,12,92,15,98,95
+74,97,22,89,11,16,99,49,39,15,43
+15,46,28,61,98,75,96,53,65,35,42,51,95,84,92,27,88,45,12
+46,26,53,54,18,68,11,13,98,99,25,39,16,61,49,62,72,15,86,28,66
+18,99,62,86,39,46,68,28,61,53,65
+14,51,96,92,95,53,35,55,27,84,42,75,64,74,52,65,88,45,61
+26,49,86,28,35,95,84
+55,22,58,18,66,49,13,86,54,39,15
+13,86,15,75,35,83,95,84,92
+14,74,64,72,62,26,39
+84,92,34,88,45,14,55,73,97,89,11,25,72
+72,99,62,26,66,49,54,39,15,43,68,61,75,53,65,35,42
+88,45,12,52,14,55,74,64,23,73,97,22,58,89,11,18,25,16,72,99,62,26,49
+14,74,64,23,73,97,22,58,89,11,18,25,16,72,99,62,26,66,49,13,86,54,39
+11,18,25,16,49,13,54,15,98,96,53
+14,64,52,12,55,11,89,51,18
+16,72,99,66,49,86,54,15,43,68,28,98,96,53,65,35,42
+65,75,53,99,46,42,28,61,66,68,86,54,43,39,13
+18,39,13,72,62,55,23,22,64,14,26,49,58,66,11,74,97
+72,11,86,89,15,99,55,97,73,25,16,13,58,18,49,23,54
+92,28,27,95,13,46,68,42,75
+83,61,15,99,46,86,35,68,53
+83,95,92,31,34,45,12,52,14,55,64,23,97,22,58,89,11,18,25
+88,12,52,14,97,22,89,72,62,26,49
+86,84,96,42,28
+92,27,34,45,12,14,55,74,64,23,73,97,22,58,89,11,18,16,99
+28,61,98,53,65,51,84,34,88,45,74
+88,14,89,22,97,23,84,83,73,58,12,55,27
+61,43,28,98,31,84,52
+75,96,88,84,27,46,28,34,35,83,42,65,98,61,68,31,54,53,43
+15,18,16,72,62,22,25,99,54
+98,54,13,66,86,62,25,35,99,26,68,43,53
+86,54,46,28,75,35,51,92,31,27,34
+26,66,13,86,39,43,61,53,83
+23,97,58,11,18,72,49,86,54,46,68
+35,42,51,83,95,84,92,31,27,34,88,45,12,52,55,74,64,23,73,97,22,58,89
+83,84,98,86,95,65,26
+97,55,22,11,23,45,88,18,84,72,92,73,74,16,58,64,34
+83,95,84,92,31,27,34,88,45,12,52,14,55,74,64,23,73,22,58,89,11,18,25
+97,18,72,99,62,13,86
+28,13,89,98,96,16,49
+14,27,26,73,55,18,34,72,99,45,52,23,74,88,58,25,97,22,12,89,62
+18,25,16,72,99,62,26,66,49,13,86,54,39,15,43,46,68,28,98,75,96,53,65
+58,89,11,18,72,62,26,66,54,39,15,68,61,98,75
+68,72,11,39,58,25,54,86,61,49,75
+98,54,39,28,26,18,11,22,68,43,62,66,86
+45,99,73,97,58,92,89,25,11,14,52,74,23,27,88
+45,12,55,74,64,23,73,97,58,18,25,16,72,99,62,66,13
+27,22,14,84,73,95,58
+64,34,95,88,11,12,14,97,83,73,55
+89,11,45,31,73,14,97,34,58,92,55,51,64,22,23,27,74,84,52,12,95,83,88
+52,97,83,92,22,35,55,51,84,88,27,23,89
+88,42,27,55,84,14,95,98,96,65,74,83,51,34,61,53,12,45,28
+64,45,12,14,22,74,95,97,92,52,31,18,55,25,23,27,34,16,58
+26,51,49,54,75,28,98,42,62,61,46,53,66,96,68,39,43,13,83,65,86
+27,97,52,72,73,64,26,25,16,18,74
+27,52,74,23,73,97,22,58,89,11,18,25,16,72,99,62,26
diff --git a/2024/5/data_test.txt b/2024/5/data_test.txt
new file mode 100644
index 0000000..9d146d6
--- /dev/null
+++ b/2024/5/data_test.txt
@@ -0,0 +1,28 @@
+47|53
+97|13
+97|61
+97|47
+75|29
+61|13
+75|53
+29|13
+97|29
+53|29
+61|53
+97|53
+61|29
+47|13
+75|47
+97|75
+47|61
+75|61
+47|29
+75|13
+53|13
+
+75,47,61,53,29
+97,61,53,29,13
+75,29,13
+75,97,47,61,53
+61,13,29
+97,13,75,29,47
diff --git a/2024/5/main.cpp b/2024/5/main.cpp
new file mode 100644
index 0000000..c1accf9
--- /dev/null
+++ b/2024/5/main.cpp
@@ -0,0 +1,131 @@
+#include <algorithm>
+#include <fstream>
+#include <iostream>
+#include <map>
+#include <set>
+#include <sstream>
+#include <string>
+#include <vector>
+
+int main()
+{
+	const std::string filename = "data.txt";
+	std::ifstream ifs(filename);
+	if(!ifs.is_open())
+	{
+		std::cerr << "Missing " << filename << "." << std::endl;
+		return -1;
+	}
+
+	unsigned long total = 0;
+	unsigned long total_pt2 = 0;
+
+	std::map<long, std::set<long>> rules;
+	std::vector<std::vector<long>> production;
+
+	bool reading_page_numbers = true;
+	for(std::string line; std::getline(ifs, line); )
+	{
+		if(line == "")
+		{
+			// one blank line is the break between reading page numbers and records.
+			if(reading_page_numbers)
+				reading_page_numbers = false;
+
+			continue;
+		}
+
+		std::istringstream input(line);
+		if(reading_page_numbers)
+		{
+			// for each value in the line:
+			std::vector<long> numbers;
+			for(std::string value; std::getline(input, value, '|'); )
+			{
+				try {
+					numbers.push_back(std::atoi(value.c_str()));
+				} catch (const std::exception &e) {
+					std::cout << "Error parsing rule number from " << value << std::endl;
+					exit(-1);
+				}
+			}
+			if(numbers.size() != 2)
+			{
+				std::cout << "Error: Incorrect amount of page numbers (" << numbers.size()
+				          << ") in rules import sequence." << std::endl;
+				exit(-1);
+			}
+			rules[numbers[0]].insert(numbers[1]);
+		}
+		else
+		{
+			// for each value in the line:
+			production.push_back({});
+			for(std::string value; std::getline(input, value, ','); )
+			{
+				try {
+					production.back().push_back(std::atoi(value.c_str()));
+				} catch (const std::exception &e) {
+					std::cout << "Error parsing production number from " << value << std::endl;
+					exit(-1);
+				}
+			}
+		}
+	}
+
+	// // Debug:
+	// std::cout << "RULES:" << std::endl;
+	// for(auto rule : rules)
+	// {
+	// 	std::cout << rule.first << " prints before ";
+	// 	for(auto page : rule.second)
+	// 		std::cout << page << ",";
+	// 	std::cout << std::endl;
+	// }
+	// std::cout << std::endl;
+	// std::cout << "PRODUCTION:" << std::endl;
+	// for(auto row : production)
+	// {
+	// 	for(auto num : row)
+	// 		std::cout << num << ",";
+	// 	std::cout << std::endl;
+	// }
+
+	// For each production run:
+	for(auto row : production)
+	{
+		std::set<long> already_passed;
+		bool bad = false;
+		// For each page number in that production run:
+		for(auto num : row)
+		{
+			// Check against all page numbers it shouldn't print after
+			for(auto before : rules[num])
+			{
+				// If found, it's a bad row!
+				if(std::find(already_passed.begin(), already_passed.end(), before) != already_passed.end())
+				{
+					bad = true;
+					break;
+				}
+			}
+
+			// Keep track of numbers we've looked at already:
+			already_passed.insert(num);
+		}
+
+		if(!bad)
+			total += row[row.size() / 2];
+		// else
+		// 	std::cout << "not ";
+		// std::cout << "safe: ";
+		// for(auto num : row)
+		// 	std::cout << num << ",";
+		// std::cout << std::endl;
+	}
+
+	std::cout << "    Total: " <<     total << std::endl;
+	std::cout << "PT2 Total: " << total_pt2 << std::endl;
+
+	return 0;
+}