Untitled

#include <iostream>

using namespace std;
int main()
{
    setlocale(LC_ALL, "Russian");
    int b;
    float a, a2 , c=1;
    cin >> a >> b;
    a2 = a;
    while (a2 < b) {
        a += ((a / 100) * 70);
        a2 += a;
        c++;

    }
    cout << c;
}