View Code of Problem 51

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

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