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

int ctoi(char &c){
    switch(c){
        case '1': return 1;
        case '2': return 2;
        case '3': return 3;
        case '4': return 4;
        case '5': return 5;
        case '6': return 6;
        case '7': return 7;
        case '8': return 8;
        case '9': return 9;
        default: return 0;
    }
}

int main() {
    long long a, b;
    cin >> a >> b;

    if(a % 2 != 0 || b % 2 != 0){
        cout << (b / a) + 1 << endl;
    } else {
        cout << b / a << endl;
    }
}