include <bits/stdc++.h> using namespace std; int H[1005],L[1005],R[1005]; int main() { int n; cin>>n; for(int i=1;i<=n;i++) { cin>>H[i]>>L[i]>>R[i]; } for(int i=1;i<=n;i++) { int AnsL=0,AnsR=0,h1=0,h2=0; for(int j=1;j<=n;j++) { if(H[i]>H[j]) { if(H[j]>h1&&L[j]<L[i]&&R[j]>=L[i]) { h1=H[j]; AnsL=j; } if(H[j]>h2&&R[j]>R[i]&&L[j]<=R[i]) { h2=H[j]; AnsR=j; } } } printf("%d %d\n",AnsL,AnsR); } return 0; }