View Code of Problem 51

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

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