#include <iostream> using namespace std; int main() { int n; cin>>n; int score=0; if(n<0){ n=0; } if(n<=10){ score=n*6; }else if(n<=20){ score=10*6+(n-10)*2; }else if(n <= 40){ score=10*6+10*2+(n-20)*1; }else{ score=100; } cout<<score<<endl; return 0; }