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Cod sursa(job #280264)
#include <cstdio>
using namespace std;
int a[202][202],n;
int main()
{
freopen("oras.in","r",stdin);
freopen("oras.out","w",stdout);
scanf("%d", &n);
if (n==4)
{
printf("-1\n");
return 0;
}
int q=0;
for (int i=1; i<n; i++)
for (int j=i+1; j<=n; j++)
{
++q;
if (!(q%2))
a[i][j]=1;
else
a[j][i]=1;
}
for (int i=1; i<n; i++)
{
for (int j=i+1; j<=n; j++)
printf("%d ",a[i][j]);
printf("\n");
}
return 0;
}