题解 | #买房子#

#include <iostream>
using namespace std;

int main() {
    int salary,rate;
    while (cin >>salary>>rate) { // 注意 while 处理多个 case
        int money=0,count=1;
        double house=200;
        while(count<=21){
            if(money+salary>=house){
                cout<<count<<endl;
                break;
            }
            house=house+house*rate*1.0/100;
            money+=salary;
            count++;
        }
        if(count>21)
            cout<<"Impossible"<<endl;
    }
}
// 64 位输出请用 printf("%lld")