using System;
class Program
{
static void Main() {
bool b1 = false;
bool b2 = false;
bool b3 = true;
bool b4 = true;
if (b1) {
Console.WriteLine("b1 = true");
}
else if (b2) {
Console.WriteLine("b1 = false b2 = true");
}
else if (b3) {
if (b4) {
Console.WriteLine("b3 = true b4 = true");
}
else {
Console.WriteLine("b3 = true b4 = false");
}
}
else {
Console.WriteLine("b3 = false");
}
}
}
/*
run:
b3 = true b4 = true
*/