#include <iostream>
using namespace std;
/*
Declarăm și citim variabila “a”.
Declaram variabila “count” pe care o initializam cu valoarea zero.
Dacă ambele cifre sunt pare, variabila “count”: 
nu se incrementeaza. (“count” ia valoarea zero).
Altfel dacă a doua cifra a lui “a” este impara si prima este para:
Incrementam variabila “count”.(afisam unu).
Altfel daca prima cifra a lui “a” este impara si a doua este para:
Incrementam variabila “count”.(afisam unu).
Altfel: 
variabila count se incrementeaza cu “2”. (afisam doi)
Afisam variabila “count”
*/
 
const int TEN = 10;
 
int main() {
	int a;
	cin >> a;
	int count = 0;
	if (a / TEN % 2 != 0 && a % TEN % 2 != 0) {
		count = 2;
	} else if (a / TEN % 2 != 0 || a % TEN % 2 != 0) {
		count = 1;
	}
	cout << count;
	return 0;
}

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

CgoKMTMgLSZndDsgMgoKMTAgLSZndDsgMQoKOTkgLSZndDsgMgoKMjAgLSZndDsgMAoKMjEgLSZndDsgMQogCgoKMTEgLSZndDsgMgo5OCAtJmd0OyAxCjIwIC0mZ3Q7IDAKNTAgLSZndDsgMQoyMiAtJmd0OyAwCg==

13 -> 2

10 -> 1

99 -> 2

20 -> 0

21 -> 1
 


11 -> 2
98 -> 1
20 -> 0
50 -> 1
22 -> 0