[C++]백준 10799: 쇠막대기

www.acmicpc.net/problem/10799

10799번: 쇠막대기

#include <iostream>

using namespace std;

int main()
{
	string sik;
	int cnt = 0, sik_cnt = 0;

	cin >> sik;

	for (int i = 0; i < sik.size(); i++) {
		if (sik[i] == '(' && sik[i + 1] == ')') {
			cnt += sik_cnt;
			i++;
		}
		else if (sik[i] == '(')sik_cnt++;
		else if(sik[i] == ')') {
			sik_cnt--;
			cnt++;
		}

	}
	cout << cnt;
}