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Copy pathThe_Grid_Fill_Problem.cpp
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54 lines (49 loc) · 1022 Bytes
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#include<bits/stdc++.h>
using namespace std;
#define int long long
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define endl '\n'
const int mod = 1000000007;
signed main(){
fastio;
int t;
cin>>t;
while(t--)
{
int n;
cin>>n;
if(n&1)
{
// int x;
// if((x+1)%4==0)
// {
// x=1;
// }
// else
// x=-1;
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
if((i==j))
cout<<-1<<" ";
else
cout<<1<<" ";
}
cout<<endl;
}
}
else
{
for(int i=0;i<n;i++)
{
for(int j=0;j<n;j++)
{
cout<<-1<<" ";
}
cout<<endl;
}
}
}
return 0;
}