#include <stdio.h>
int main() {
    int numbers[5][7] = { {81, 87, 93, 97, 92, 87, 82},
                        {83, 88, 94, 96, 91, 86, 81},
                        {84, 89, 95, 95, 90, 85, 80},
                        {85, 90, 96, 94, 89, 84, 81},
                        {86, 91, 97, 93, 88, 83, 82} };
    int i, j, sum;
    for (i=0; i<7; i++) {
        sum = 0;
        for (j=0; j<5; j++) {
            sum = sum+numbers[j][i];
        }
        printf("Summation of column %d = %d\n", i+1, sum);
    }
    return 0;
}