代码
#include <stdio.h>
#include <math.h>
using namespace std;
int main() {
int n,k;
int i;
while(scanf("%d %d",&n,&k) !=EOF){
for ( i = 1; i <= 21; ++i) {
if(n*i >= 200 * pow(1+(k/100.0),i-1)){
printf("%d\n",i);
break;
}
}
if(i >21){
printf("Impossible\n");
}
}
return 0;
}