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Cod sursa(job #988295)
#include<cstdio>
#include<algorithm>
using namespace std;
int a[305][305];
void Make_Graph(int N)
{
if(N==3) {a[1][2]=a[2][3]=a[3][1]=1;return;}
if(N==4) return;
if(N==6)
{
a[1][2]=a[1][3]=a[1][4]=1;
a[2][3]=a[2][4]=a[2][5]=1;
a[3][4]=a[3][6]=1;
a[4][5]=a[4][6]=1;
a[5][1]=a[5][3]=a[5][6]=1;
a[6][1]=a[6][2]=1;
return;
}
for(int i=1;i<=N-2;++i)
a[i][N-1]=a[N][i]=1;
a[N-1][N]=1;
Make_Graph(N-2);
}
int main()
{
freopen("oras.in","r",stdin);
freopen("oras.out","w",stdout);
int n;
scanf("%d",&n);
Make_Graph(n);
if(n==4)
{
printf("-1\n");
return 0;
}
for(int i=1;i<=n;i++,printf("\n"))
for(int j=1;j<=n;j++)
printf("%d",a[i][j]);
return 0;
}