题解 | #矩阵计算#

#include <stdio.h>

int main() {
    int row = 0;
    int col = 0;
    while (scanf("%d %d", &row, &col) != EOF) 
    {
        int arr[10][10];
        for (int i = 0; i < row; i++)
        {
            for (int j = 0; j < col; j++)
            {
                scanf("%d", arr[i] + j);
            }
        }
        int sum = 0;
        for (int i = 0; i < row; i++)
        {
            for (int j = 0; j < col; j++)
            {
                if (arr[i][j] > 0)
                {
                    sum += arr[i][j];
                }
            }
        }

        printf("%d",sum);
    }
    return 0;
}