View Code of Problem 51

#include<cstring>
#include<string>
#include<iostream>
#include<math.h>
#include <iomanip>
using namespace std;
int main(){
int flag=0;
char b[1000];
int j=0;
int sum=0;
int t;
cin>>t;
int a[t][t];
for(int i=0;i<t;i++)
{
	for(int j=0;j<t;j++)
	{
		cin>>a[i][j];
	}
}
for(int i=0;i<t;i++)
{
	for(int j=0;j<i+1;j++)
	{
		sum+=a[i][j];
		
	}
	
}

cout<<sum;
 

}

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