# include<iostream> # include<cstdio> # include<algorithm> using namespace std; struct Student{ int id; int S; int Zq; double zf(){ return Zq*S*0.01; } }; Student s[3001]; bool cmp(Student a,Student b){ if(a.zf()!=b.zf())return a.zf()>b.zf(); else return a.id>b.id; } int main(){ int n; cin>>n; for(int i=1;i<=n;i++){ s[i].id=i; cin>>s[i].S>>s[i].Zq; } sort(s+1,s+n+1,cmp); for(int i=1;i<=n;i++){ cout<<s[i].id<<" "; printf("%.2f",s[i].zf()); cout<<endl; } return 0; }