题解 100% AC

#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,m=0;
    char b;
    cin>>a>>b;
    if(a<=1000){
        m+=8;
        if(b=='y'){
            m+=5;
        }
    }else if(a>1000){
    	m+=8; 
        m+=(a-1000)/500*4;
        if((a-1000)%500!=0){
            m+=4;
        }
        if(b=='y'){
            m+=5;
        }
    }
    cout<<m;
	return 0;
}