import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.lang.Math;
class MaxDemo {
    static float max(float a, float b){
	    if (a > b) {
	    return a;
	    }
	    return b;
    }
    static float max(float a, float b, float c){
    float max = a;
    if (b > a) {
    max = b;
    } 

    if (c > max) {
    max = c;
    }
    return max;

    }

    public static void main(String[] args) throws java.io.IOException{
		    float a, b, c;
		    System.out.println("input three numbers");
	            BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
		    a = Float.parseFloat(input.readLine());
		    b = Float.parseFloat(input.readLine());
		    c = Float.parseFloat(input.readLine());
		    System.out.println("output of greater between first 2 numbers");
		    System.out.println(max(a, b));
		    System.out.println("output of greater between all numbers");
		    System.out.println(max(a, b, c));

                    
                    
                    

    }
}

//By msglm; Licensed under the AGPL v3