#include<stdio.h>
int main()
{
int a = 0, b = 0, m, n;
int num[1001][1001], used[1001][1001];
scanf_s("%d %d", &m, &n);
while (a < m)
{
while (b < n)
{
scanf_s("%d", &num[a][b]);
used[a][b] = 1;
b++;
}
b = 0;
a++;
}
}
输入到最后一行刚开始时就卡住了
按F11也不动了