#!/usr/bin/ruby

4 + 2*3 + 2 == 12 ? ".".print : "Err1\n".die;
4+2*3+2     == 14 ? ".".print : "Err2\n".die;
4+2 * 3+2   == 30 ? ".".print : "Err3\n".die;
1+2*3 + 5*4 == 27 ? ".".print : "Err4\n".die;
1 + 2*3+4*5 == 47 ? ".".print : "Err5\n".die;

"\nTest passed".say;