[http://codeforces.net/contest/940/submission/36654025↵
](http://codeforces.net/contest/940/submission/36654025)↵
↵
[http://codeforces.net/contest/940/submission/36654074]( http://codeforces.net/contest/940/submission/36654074)↵
↵
IS THERE DIFFERENCE??????
↵
[http://codeforces.net/contest/940/submission/36654074]( http://codeforces.net/contest/940/submission/36654074)↵
↵
IS THERE DIFFERENCE??????