Максимальный колхоз, но работает. А вот проверку не проходит. 
public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String a = reader.readLine();
        String b = reader.readLine();
        String c = reader.readLine();
        int x = Integer.parseInt(a);
        int y = Integer.parseInt(b);
        int z = Integer.parseInt(c);
        int one, two, three;
        if ((x<y)&&(x<z)){
            one = x;
            }else{
            if ((y<x)&&(y<z)){
                one = y;
            }else{
                one = z;
            }
        }

        if ((x>y)&&(x>z)){
            three = x;
        }else{
            if ((y>x)&&(y>z)){
                three = y;
            }else{
                three = z;
            }
        }

        if (((x>y)&&(x<z))||((x<y)&&(x>z))){
            two = x;
        }else{
            if (((y>x)&&(y<z))||((y<x)&&(y>z))){
                two = y;
            }else{
                two = z;
            }
        }

        System.out.println(three + " " + two + " "+ one);
    }
}