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怎么回事啊,怎么老是WA啊,难道我题目理解错了。大家帮我看看啊怎么回事啊,怎么老是WA啊,难道我题目理解错了。大家帮我看看啊
#include <cstdio>
int main()
{
int n,m,i,j,sum=0,s=0;
while(1)
{
scanf("%d%d",&n,&m);
if(n==0&&m==0) break;
int a[m+5][n+5];
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
scanf("%d",&a[j][i]);
}
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
{
if(a[j][i]==1)
sum=sum+1;
}
if(sum==m)
s=s+1;
}
if(s==n)
printf("yes\n");
else
printf("no\n");
}
}
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