#include <iostream>

using namespace std;

int h, m;

bool f(int t){
    long long a = -6*t*t*t*t + h*t*t*t + 2*t*t + t;
    if (a <= 0) return true;
    else return false;
}

int main(){
    cin >> h >> m;

    for (int i = 1; i <= m; i ++)
        if (f(i)){
            cout << "The balloon first touches ground at hour:" << endl;
            cout << i << endl;
            return 0;
        }

    cout << "The balloon does not touch ground in the given time." << endl;

    return 0;
}