题解 | 买房子

#include<stdio.h>

int main(){
	int n,k;
	while(scanf("%d %d",&n,&k) != EOF){
		int sum = n;
		int house = 200;
		if(n >= house){
			printf("1\n");
			continue;
		}
		int flag = 0;
		for(int i = 2;i<=21;i++){
			sum += n;
			house = house * (1 + k * 0.01);
			if(sum >= house){
				printf("%d\n",i);
				flag = 1;
				break;
			}
		}
		if(flag == 0){
			printf("Impossible\n");
		}
	}
	return 0;
}