/*
 * GIRLSNBS.cpp
 *
 *  Created on: Jun 4, 2014
 *      Author: Arpit Bhayani
 */

#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <iostream>

using namespace std;

#define DEBUG 0
#define gc getchar
#define ll long long

void scanint(ll int &x) {
    register ll int c = gc();
    x = 0;
    for (; (c < 48 || c > 57); c = gc())
        ;
    for (; c > 47 && c < 58; c = gc()) {
        x = (x << 1) + (x << 3) + c - 48;
    }
}

int readline(char * str) {

    int i = 0;
    char ch;
    while ((ch = getchar()) != '\n') {
        str[i++] = ch;
    }
    str[i] = '\0';
    return i;
}

int main(int argc, char * argv[]) {

    int g, b;
    scanf("%d%d", &g, &b);
    while (g != -1 && b != -1) {

        int r = (max(g,b)%(min(g,b)+1));
        if ( r == 0 )
            cout << (max(g,b)/(min(g,b)+1)) << endl;
        else
            cout << (max(g,b)/(min(g,b)+1)) + 1 << endl;

        scanf("%d%d", &g, &b);
    }
    return 0;
}