ccf-201612-2

#include <iostream>
using namespace std;
int main() {
    float m;
    cin>>m;
    int a[]= {3500,5000,8000,12500,38500,58500,83500};
    int b[]= {3500,1455,2700,3600,19500,14000,16250};
    float c[]= {1,0.97,0.9,0.8,0.75,0.7,0.65,0.55};
    int i=0;
    while(m>=b[i]) {
        m-=b[i];
        i++;
        if(i>6) {
            break;
        }
    }
    m/=c[i];
    m+=a[i-1];
    cout<<m;
    return 0;
}