17-09-01(打酱油)

import java.util.*;
public class Main{
    
    
    public static void main(String[] args){
    
    
       //Scanner input = new Scanner(System.in);
        //int n = input.nextInt();
int n = 40;
        int x =0,y=0;
        int sum=0;
        if(n<=30){
    
    
            x = n/10;
        }
        for(int i =n/10;i>=0;i--){
    
    
            for(int j =0;j<=n/10;j++){
    
    
                if(i + j == n/10){
    
    
                    if(sum <  i + i/3 + j + 2*j/5){
    
    
                        x = i;
                        y = j;
                        sum = x + x/3 + y + 2*y/5;
                    }
                }
            }
        }
        //System.out.println(x+" "+y);
        System.out.print(sum);
    }
}