#include<bits/stdc++.h>
using namespace std;

int main() {
    unsigned long long a,b;
    cin>>a>>b;
    if(a>b){
    	if(b==0){
			cout<<60*a;
			return 0;
		}
		cout<<(a-b)*90+(a-b)*60;
		return 0;
	}
	if(a==b){
		if(a==0&&b==0){
			cout<<0;
			return 0;
		}
		cout<<a*90+b*0;
		return 0;
	}
	if(a<b){
		if(a==0){
			cout<<40*b;
			return 0;
		}
		cout<<(b-a)*90+(b-a)*40;
		return 0;
	}
}