题解 | 单组_二维数组

#include <stdio.h>

int main() {
    int n,m;
    long long sum = 0;
    scanf("%d %d",&n,&m);
    int number[1000][1000];
    int i,j;
    for(i = 0;i<n;i++){
        for(j = 0;j < m;j++){
            int num;
            if(j != m-1)
                scanf("%d ",&num);
            else scanf("%d",&num);
            sum = sum + num;
        }
    }
    printf("%lld",sum);
    return 0;
}

防止数据溢出用longlong