#include<iostream>

using namespace std;

int main(){

int n;

while(cin >> n){

if(0<=n&&n<=100){

switch(n){

case 1 ... 10:

cout << n*6;

break;

case 11 ... 20:

cout <<60+n*2;

break;

case 21 ... 39:

    cout <<80+n*1;

    break;

default:

    cout <<"100";

break;

}

}

    }

}

#include

using namespace std;

 

int main(){

int n;

while(cin >> n){

if(0<=n&&n<=100){

switch(n){

case 1 ... 10:

cout << n*6;

break;

case 11 ... 20:

cout <<60+n*2;

break;

case 21 ... 39:

    cout <<80+n*1;

    break;

default:

    cout <<"100";

break;

}

}45

    }

}