#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,sum=0;
cin>>n;
if(n<=100000)
	sum=n*0.1;
else if(n>100000&&n<=200000)
	sum=(n-100000)*0.075+100000*0.1;
else if(n>200000&&n<=400000)
	sum=(n-200000)*0.05+100000*0.1+100000*0.075;
else if(n>400000&&n<=600000)
	sum=(n-400000)*0.03+100000*0.1+100000*0.075+200000*0.05;
else if(n>600000&&n<=1000000)
	sum=(n-600000)*0.015+100000*0.1+100000*0.075+200000*0.05+20000*0.03;
else 
	sum=(n-1000000)*0.01+400000*0.015+100000*0.1+100000*0.075+200000*0.05+20000*0.03;
cout<<sum;
}