View Code of Problem 51

#include<stdio.h>
int main()
{

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

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