[브3] 29722 - 브실혜성

int main()
{
	// 문자열 생성
	string str;
	int n;
	stringstream ss;
	cin >> str >> n;
	ss << str;

	int num = 0;
	vector<int> nums;
	while (ss >> num)
		nums.push_back(abs(num));

	// 튜플 생성
	auto t = make_tuple(nums[0], nums[1], nums[2]);
	int y, m, d;
	tie(y, m, d) = t;
	d += n;
	m += (d - 1) / 30;
	d = (d - 1) % 30 + 1;
	y += (m - 1) / 12;
	m = (m - 1) % 12 + 1;

	cout << y << '-' << (m < 10 ? "0" : "\0") + to_string(m) << '-' << (d < 10 ? "0" : "\0") + to_string(d);
}