1.4-14:计算邮资

#include<math.h>
#include<iostream>
using namespace std;
int main()
{
	int n,fee;
	char c;
	cin>>n>>c;
    if (n<=1000) fee=8;
    else fee=8+ceil((n-1000)/500.0)*4;
    if (c=='y') fee=fee+5;
    cout<<fee;
	return 0;
}