/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
class Ideone
{
public static Scanner sc
= new Scanner
(System.
in);
{
int n = sc.nextInt();
if( n >= 1 && n <= 100){
int sum = 0;
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
sum += sc.nextInt();
}
}
}
}
}
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