#include <iostream>
using namespace std;

bool a(){
    cout << "a" << endl;
    return true;
}

bool b(){
    cout << "b" << endl;
    return false;
}

bool c(){
    cout << "c" << endl;
    return false;
}

int main() {
	cout << (a()||b()&&c());
	return 0;
}