#include<iostream> using namespace std; int main(){ int n;cin>>n; int a[1001],b[1001],c[1001]; for(int i=1;i<=n;i++){ cin>>a[i]>>b[i]>>c[i]; } for(int i=1;i<=n;i++){ int a1=0,a2=0; for(int j=1;j<=n;j++){ if(a[j]<a[i]&b[j]<b[i]&&c[j]>=b[i]) a1=j; if(a[j]<a[i]&b[j]<=c[i]&&c[j]>c[i]) a2=j; } cout<<a1<<" "<<a2<<"\n"; } }