题解 | 买房子

#include <iostream>
using namespace std;

int main() {
    int n;
    double k;
    int amount;
    double price;
    int count;
    while (cin >> n >> k) {
        count = 0;
        amount = 0;
        price = 200;
        while (count <= 21) {
            count++;    //一年过去了
            amount += n;
            if (count > 1) price *= (1 + k / 100);
            if (amount >= price) {
                cout << count << endl;
                break;
            }
        }
        if (count > 21)    cout << "Impossible" << endl;
    }
}
// 64 位输出请用 printf("%lld")