ciorba

#include <iostream>
#include <string>

void afis
{
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
cout<<a[i][j];
}

int main()
{
    int i;
    cin>>n;
    for(i=1;i<=n;i++) cin>>t[i]
    for(i=1;i<=n;i++)
        if(t[i]!=0)
        {
        cout<<"{"<<t[i]<<","<<i<<"]";
        a[i][t[i]]=a[t[i]] [i]=1;
        }
        cout<<endl
        afis();
}