求错在哪了

#include <iostream>
using namespace std;
int main(){
    int t,m;
    char s;
    cin>>t>>s;
	if(t<=1000) m=8;
	else{
		m=8+(t-1000)/500*4;
		if(m%500!=0) m+=4;
	}
	if(s=='y') m+=5;
	cout<<m;
    return 0;
}