View Code of Problem 51

#include<stdio.h>
int main()
{
	int n,i,j,a[10][10] = {0},sum = 0;
	scanf("%d",&n);
	for (i = 0;i < n;i++)
	{
		for (j = 0;j < n;j++)
		{
			scanf("%d",&a[i][j]);
		}
	}
	for (i = 0;i < n;i++)
	{
		for (j = i;j < n;j++)
		{
			sum+=a[j][i];
		}
	}
	printf("%d",sum);
	return 0;
}