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Cod sursa(job #989699)
#include<fstream>
using namespace std;
ifstream f("oras.in");
ofstream g("oras.out");
int n,i,j,a[201][201],ok=0;
int main()
{
f>>n;
if(n==4)
g<<-1;
else
{
if(n%2)
{
for(i=1;i<=n;i++)
{
for(j=i+1;j<=n;j++)
{
a[i][j]=1-a[i][j-1];
a[j][i]=1-a[i][j];
}
}
}
else
{
a[1][2]=a[1][3]=a[1][5]=1;
a[2][3]=a[2][4]=a[2][6]=1;
a[3][4]=a[3][5]=a[3][6]=1;
a[4][1]=a[4][5]=1;
a[5][2]=a[5][6]=1;
a[6][1]=a[6][4]=1;
for(i=8;i<=n;i+=2)
a[i-1][i]=1;
for(j=1;j<i;j++)
{
a[j][i-1]=1;
a[i][j]=1;
}
}
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
g<<a[i][j];
g<<"\n";
}
}
return 0;
}