#include<bits/stdc++.h> using namespace std; int main(){ int n,a[1010]={},b[1010]={},c[1010]={}; cin>>n; for(int i=1;i<=n;i++) cin>>a[i]>>b[i]>>c[i]; for(int i=1;i<=n;i++){ int s1=0,s2=0; for(int j=1;j<=n;j++){ if(a[j]<a[i]&&b[j]<b[i]&&c[j]>=b[i]){ s1=j; } if(a[j]<a[i]&&b[j]<=c[i]&&c[j]>c[i]){ s2=j; } } cout<<s1<<" "<<s2<<endl; } return 0; }