#include <iostream>
#include <string>

using namespace std;

int main() {
	string s;
	cin >> s;
	int n = s.size();

	string ans;

	int cnt = 0;

	int flag = 0;

	for (int i = 0; i < n; ++i) {
		if (s[i] == '+') {
			cnt++;
			if (cnt == 2 && flag == 1) {
				ans.push_back('+');
				ans.push_back('+');
				ans.push_back(')');
				cnt = 0;
				flag = 0;
				continue;
			}
		}
		else {
			if (flag == 1) {
				ans.push_back(')');
				if (cnt == 1) {
					ans.push_back('+');
					cnt = 0;
				}
				ans.push_back('(');
				ans.push_back(s[i]);
				continue;
			}

			while (cnt > 2) {
				cnt--;
				ans.push_back('+');
			}
			if (cnt == 2) {
				ans.push_back('(');
				ans.push_back('+');
				ans.push_back('+');
				ans.push_back(s[i]);
				ans.push_back(')');
				cnt = 0;
			}
			else {
				if (cnt == 1) {
					ans.push_back('+');
					cnt = 0;
				}
				ans.push_back('(');
				ans.push_back(s[i]);
				flag = 1;
			}
		}
	}

	if (flag == 1) {
		ans.push_back(')');
	}

	while (cnt > 0) {
		cnt--;
		ans.push_back('+');
	}

	cout << ans;

	return 0;
}