#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;
}