题解（CP002998.计算邮费）

#include<bits/stdc++.h>
using namespace std;
int g;
char c;
int money=0;
int main(){
	cin>>g>>c;
	if(g>1000){
		g-=1000;
		money+=8;
		while(g>0){
			g-=500;
			money+=4;
		}
	}
	else{
		money+=8;
	}
	if(c=='y'){
		money+=5;
	}
	cout<<money;
	return 0;
}