View Code of Problem 51

#include<stdio.h>
int main() {
	int n, k, sum = 0;
	scanf("%d", &n);

	int a[10][10];
	for (int i = 0; i <n; i++) {
		
		for (int j = 0; j < n; j++) {
			scanf("%d", &k);
			a[i][j] = k;
		}
	}
	for (int i = 0; i < n; i++)
		for (int j=n-1; j+i>n-3; j--) {
			sum = sum + a[i][j];
		}
	printf("%d",sum);
	return 0;
}