difference between prinf and in cout?

sidthesloth · February 4, 2014, 6:33pm

I tried out this question… http://www.codechef.com/problems/MARBLEGF

I got AC when i used cin and cout… Submission: http://www.codechef.com/viewsolution/3333732
I wanted to increase the speed so I first tried to replace cin and cout with scanf and printf but I got WA with the changes Submisson: http://www.codechef.com/viewsolution/3333742 . Could anyone please tell me what am I missing here. I did not any other part of the accepted solution. Thanks in advance

betlista · February 4, 2014, 7:30pm

In C version, you are using getchar(), try to replace first one with scanf("\n") and remove second one completely and use scanf("%c %d %d\n", &type, &l, &r);…

sidthesloth · February 4, 2014, 8:47pm

thank you @batlista actually it is scanf("\n %c %d %d", &type, &l, &r); …but why any ideas on why should we do so?

bit_cracker007 · February 4, 2014, 9:31pm

Corrected :

Link : http://ideone.com/GTs0ti

sidthesloth · February 4, 2014, 9:49pm

thank you for replying…any ideas on why it is behaving like that?

betlista · February 4, 2014, 10:17pm

Maybe there is ‘\r’ character - part of line end on Windows or some other whitespace…

bit_cracker007 · February 4, 2014, 10:27pm

After each query as per the input description there should be only one whitespace character and i.e is ‘\n’(newline). Hence, as per your code more than 1 whitespace characters after any query results into wrong input and thereby WA.

sidthesloth · February 5, 2014, 9:38am

got 5-6 WA because of this…and wasted three hours…thank you btw…