题解 | 矩阵计算

#include <stdio.h>

int main() {
    int n, m;
    scanf("%d %d", &n, &m);
    int x = 0, result = 0;
    while (scanf("%d", &x) != EOF) {
        if (x > 0) {
            result += x;
        }
    }
    printf("%d", result);
    return 0;
}