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Re:竟然在这题上载跟头了,BS一下自己…………

Posted by fluke at 2006-05-20 15:21:27 on Problem 2665
In Reply To:竟然在这题上载跟头了,BS一下自己………… Posted by:summery at 2006-04-22 13:16:21
也来BS我把。。。下面也是wa的代码。怎么通过率如此高?
#include <stdio.h>

int main()
{
    int n, m;
    while(scanf("%d %d", &n, &m) && n+m > 0)
    {
        n += 1;
        int left = -1, right = -1;
        scanf("%d %d", &left, &right);
        int a, b;
        for(int i=1;i<m;++i)
        {
            scanf("%d %d", &a, &b);
            left = left <? a;
            right = right >? b;
        }
        n -= right - left + 1;
        printf("%d\n", n);
    }
    return 0;
}

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