#include <iostream>
using namespace std;

int main()
{
    float v,dkm;
    int d, t;
    cin>>v>>d;
    dkm=d/1000.0;//km
    t=60*dkm/v;  //minute
    if(t!=60*dkm/v)
        t++;
    cout<<t;
    return 0;
}