View Code of Problem 51

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

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