不知为啥

#include<bits/stdc++.h>
using namespace std;
int n;
int main(){
	cin>>n;
	if (n<100) cout<<0;
	else if (n<=5000) printf("%02d",n/100);
	else if (n<=30000) printf("%02d",n/1000+50);
	else if (n<=70000) printf("%02d",(n/1000-30)/5+80);
	else cout<<89;
	cout<<'\n';
}