#include<stdiio.h>
int main()
{
int t,n,i,x,y,s,l;
scanf("%d",&t);
while(t--)
{
scanf("%d",&n);
int a[n*n],b[n];
for(i=0;i<n*n;i++)
scanf("%d",&a[i]);
for(x=0;x<=n;x++)
{
s=y=0;
while(y<=n)
{
s+=a[x+y];
y+=(n-1);
}
b[x]=s;
}
for(i=0;i<n;i++)
printf("%d ",b[i]);
printf("\n");
}
return 0;
}

Input Sample:-

1.Number of Test Case

2.n – an integer

3.n*n integers

Output Format:-

Three integers separated by space

Sample Input:-

2

3

1 2 3 4 5 6 7 8 9

4

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Output:-

12 15 18

28 32 36 40