/* Test read/write native functions */
class Main {
	void main() {
		int r1, r2, readvar, a1;
		
		r1 = 6;
		/* r2 = 22 */
		r2 = read();
		
		write(r1); writeln(); // 6
		
		/* test expressions inside write() */
		write(r1 - 3); writeln(); // 3
		write(r1 - 6); writeln(); // 0
		write(r1 - 7); writeln(); // -1
		/* should output 111 */
        readvar = read(); // 1
		write( (r1 + (r2 * 5)) + readvar); // 117
		write(- r1); // -6
		writeln();
		/* should output 15 */
        a1 = read(); // -15
		write(- a1); // 15
		
	}
}
