hdu2398 Savings Account - 数学

/*hdu2398 Savings Account - 数学*/#include<iostream>#include<cmath>using namespace std;int main(){double x,y,a,l;int ret;while(cin>>x>>l>>y){l=1+l/100;a=log(y/x)/log(l);//l^a=y/xret=ceil(a);//向上取整  floor是向下cout<<ret<<endl;}return 0;}