//the test case (toy)
fn test_sum(key: int, val: int) {
	fn sum(n: int) {
		if (n < 2) {
			return n;
		}

		return n + sum(n - 1);
	}

	var result: int const = sum(val);
	print string key + ": " + string result;
}

for (var i: int = 0; i <= 10; i++) {
	test_sum(i, i * 1000);
}