#include<bits/stdc++.h> using namespace std; struct entrants{ int id,speed,correctness; double score(){ return speed*correctness/100; }void input(){ cin>>speed>>correctness; }void output(){ cout<<id<<" "<<score()<<endl; } }entr[3001]; bool cmp(entrants a,entrants b){ if(a.score()!=b.score()) return a.score()>b.score(); else return a.id<b.id; } int main(){ int n; cin>>n; for(int i=1;i<=n;i++){ entr[i].input(); entr[i].id=i; } sort(entr+1,entr+n+1,cmp); cout<<fixed<<setprecision(2); for(int i=1;i<=n;i++) entr[i].output(); return 0; }