package com.codegym.task.task04.task0428; /* Positive number */ import java.io.*; import java.util.Scanner; public class Solution { public static void main(String[] args) throws Exception { //write your code here Scanner input = new Scanner(System.in); int n1 = input.nextInt(); int n2 = input.nextInt(); int n3 = input.nextInt(); if ( (n1==0 && n2==0 && n3==0) || (n1<0 && n2<0 && n3<0) ) System.out.println(0); else if( (n1>=0 && n2<=0 && n3<=0) || (n1<=0 && n2>=0 && n3<=0) || (n1<=0 && n2<=0 && n3>=0) ) System.out.println(1); else if( (n1<=0 && n2>=0 && n3>=0) || (n1>=0 && n2<=0 && n3>=0) || (n1>=0 && n2>=0 && n3<=0) ) System.out.println(2); else if (n1>=0 && n2>=0 && n3>=0) System.out.println(3); } }