View Code of Problem 51

#include<stdio.h>
#include<stdbool.h>
#include<math.h>
int main(){
int a;
scanf("%d",&a);
int b=a;
int c;
int sum=0;
while(a--){
for(int x=0;x<b;x++){
    scanf("%d",&c);
}
}

for(int t=b;t>0;t--){
    sum=sum+(t/2)*(2*b)+(t%2)*b;
}
printf("%d\n",sum);


return 0;
}