문제
Farmer John's
Please help FJ determine the size of the largest group he can photograph.
입력
The first line of input contains
출력
Please output the number of cows in the largest consecutive group whose IDs sum to a multiple of 7. If no such group exists, output 0.
You may want to note that the sum of the IDs of a large group of cows might be too large to fit into a standard 32-bit integer. If you are summing up large groups of IDs, you may therefore want to use a larger integer data type, like a 64-bit "long long" in C/C++.
예제1
7
3
5
1
6
2
14
10
5
In this example, 5+1+6+2+14 = 28.