I was submitting the solution for Round #362 Div2 Problem E :↵
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http://codeforces.net/contest/697/problem/E↵
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I got WA on Test#4 on this submission : http://codeforces.net/contest/697/submission/19150824↵
I had typecasted every possible places where I felt overflow could occur with long long. I submitted many times but it gave wrong answer with typecast.↵
↵
Then I submitted using 1ll in multiplication instead of typecast in this submission and it got accepted:↵
http://codeforces.net/contest/697/submission/19150943↵
↵
My question is why does typecasting not work and what is the difference between typecasting and 1ll??↵
Also when to use which because many of the solutions I coded before used typecasts and it worked well on various judges including Codeforces until I encountered this case for the first time.
↵
http://codeforces.net/contest/697/problem/E↵
↵
I got WA on Test#4 on this submission : http://codeforces.net/contest/697/submission/19150824↵
I had typecasted every possible places where I felt overflow could occur with long long. I submitted many times but it gave wrong answer with typecast.↵
↵
Then I submitted using 1ll in multiplication instead of typecast in this submission and it got accepted:↵
http://codeforces.net/contest/697/submission/19150943↵
↵
My question is why does typecasting not work and what is the difference between typecasting and 1ll??↵
Also when to use which because many of the solutions I coded before used typecasts and it worked well on various judges including Codeforces until I encountered this case for the first time.
