D - Sum diff

2 secs 1024 MB
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case01.txt
case02.txt
case03.txt
case04.txt
case05.txt
case06.txt
case07.txt
case08.txt
case09.txt
case10.txt
case11.txt
case12.txt
case13.txt
case14.txt
case15.txt
case16.txt
case17.txt
case18.txt
case19.txt
sample_1.txt
sample_2.txt
sample_3.txt