contract C {
	uint constant a = 1 wei + 4 ether;
	uint constant b = 1 seconds + 2 minutes + 3 hours + 4 days + 5 weeks;
	uint constant c = 2 ether / 1 seconds + 3 gwei * 3 hours;
	uint constant d = 2 gwei / 1 seconds + 3 minutes * 3 hours;
}
// ----
