import java.text.DecimalFormat;
import java.util.Scanner;
public class Main {

    public static void main(String[] args) {
        DecimalFormat df = new DecimalFormat("##.##");
        Scanner in = new Scanner(System.in);
        float arr1[] = new float[3];
        float max = -200;
        for(int i =0;i<arr1.length;i++){
            float input = in.nextFloat();
            arr1[i] = input;
            if (arr1[i]>max){
                max = arr1[i];
            }
        }
        System.out.print(df.format(max));
    }