#include <iostream>
using namespace std;

int main(){
    const long long n = 202420242024;
    const long long cycle = (n-1)/10;
    const int remainder = (n-1)%10;

    const int base[]={20,24,40,48,60,72,80,96,100,120};

    const long long result = base[remainder] + 120*cycle;

    cout<<result<<endl;
    return 0;
}