Submission #608096

#	Time	Username	Problem	Language	Result	Execution time	Memory
608096		SeDunion	괄호 문자열 (CEOI16_match)	C++17	37 / 100	425 ms	34312 KiB

match

#include<iostream>
#include<vector>
#include<string>

using namespace std;

int n;
string s, ans;

const int N = 2022;

int dp[N][N];
int us[N][N];

int solve(int l, int r) {
	if (l > r) return 1;
	if (us[l][r]) return dp[l][r];
	us[l][r] = 1;
	for (int i = r ; i > l ; i -= 2) {
		if (s[i] == s[l] && solve(l+1, i-1) && solve(i + 1, r)) {
			return dp[l][r] = 1;
		}
	}
	return dp[l][r];
}

void get(int l, int r) {
	if (l > r) return;
	for (int i = r ; i > l ; i -= 2) {
		if (s[i] == s[l] && solve(l+1, i-1) && solve(i + 1, r)) {
			ans[l] = '(';
			ans[i] = ')';
			get(l + 1, i - 1);
			get(i + 1, r);
			return;
		}
	}
}

int main() {
	ios_base::sync_with_stdio(0);
	cin >> s;
	n = s.size();
	if (!solve(0, n-1)) {
		cout << -1;
		return 0;
	}
	ans = string(n, '-');
	get(0, n - 1);
	cout << ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 27 / 27
• Subtask 3: 0 / 63