#include <iostream>
using namespace std;
int main() {
cout << (true != false) << endl;
cout << (true != true) << endl;
cout << (false != true) << endl;
cout << (false != false) << endl;
}
//https://pt.stackoverflow.com/q/321404/101
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CiAgICBjb3V0IDw8ICh0cnVlICE9IGZhbHNlKSA8PCBlbmRsOwogICAgY291dCA8PCAodHJ1ZSAhPSB0cnVlKSA8PCBlbmRsOwogICAgY291dCA8PCAoZmFsc2UgIT0gdHJ1ZSkgPDwgZW5kbDsKICAgIGNvdXQgPDwgKGZhbHNlICE9IGZhbHNlKSA8PCBlbmRsOwp9CgovL2h0dHBzOi8vcHQuc3RhY2tvdmVyZmxvdy5jb20vcS8zMjE0MDQvMTAx