题目直接把我整蒙了。

#include<bits/stdc++.h>
#define int long long
#define INF 0x3f3f3f
using namespace std;
int x,zero;
char c;
signed main(){
	cin>>x>>c;
	int ans;
	if(x<=1000){
		if(c=='n')cout<<"8";
		else cout<<"13";
		return 0;
	}
	if(x%500)ans=((x-1000)/500+1)*4+8;
	else ans=((x-1000)/500)*4+8;
	if(c=='y')ans+=5;
	cout<<ans;
	return 0;
}

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

分段计费+是否加急。

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

C++ :

#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,c,d,e;
	char b;
	cin>>a>>b;
	if(a<=1000&&b=='y'){
		c=8+5;
		cout<<c;
	}
	else if(a<=1000&&b=='n'){
		c=8;
		cout<<c;
	}
	else if(a>1000&&b=='n'){
		d=(a-1000)/500;
		e=(a-1000)%500;
		if(e!=0){
			d+=1;
		}
		c=d*4+8;
		cout<<c;
	}
	else{
		d=(a-1000)/500;
		e=(a-1000)%500;
		if(e!=0){
			d+=1;
		}
		c=d*4+8+5;
		cout<<c;
	}
}

Python :

# coding=utf-8
x,y=input().split()
x=int(x)
s=0
if x<=1000:
    s=8
else:
    if (x-1000)%500==0:
        s=8+(x-1000)//500*4
    else:
        s=8+(x-1000)//500*4+4
if y=='y':
    s=s+5
print(s)