题解 | #小乐乐计算函数#

import java.util.Scanner;
 
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int x = sc.nextInt();
        double ans = mi(n,m,x);
        System.out.printf("%.2f",ans);
    }
    public static double mi(int a, int b, int c){
        double answer;
        answer = 1.0*max3(a+b,b,c)/(max3(a,b+c,c)+max3(a,b,b+c));
        return answer;
    }
    public static int max3(int a,int b,int c){
        int ismax = 0;
        if(a > ismax){
            ismax = a;
        }
        if(b>ismax){
            ismax = b;
        }
        if(c > ismax){
            ismax = c;
        }
        
        return ismax;
    }
}