oj.uz

답안 #444263

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
444263 2021-07-13T13:01:19 Z prvocislo 괄호 문자열 (CEOI16_match) C++17
100 / 100
 24 ms 15452 KB 
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

void add(vector<char> &st, char c)
{
    if (!st.empty() && st.back() == c) st.pop_back();
    else st.push_back(c);
}
const int maxn = 1e5 + 5, abc = 26;
//const int maxn = 15, abc = 2;
vector<vector<int> > pv(maxn, vector<int>(abc, -1));
string ans, s;
void rek(int l, int r) // vratane
{
    if (l > r) return;
    int m = pv[r][s[l]-'a'];
    assert(l < m);
    ans[l] = '(', ans[m] = ')';
    rek(l+1, m-1), rek(m+1, r);
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> s;
    int n = s.size();
    vector<char> st;
    for (int i = 0; i < n; i++)
        add(st, s[i]);
    if (!st.empty())
    {
        cout << "-1\n";
        return 0;
    }
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < abc; j++)
        {
            if (s[i]-'a' == j) pv[i][j] = i;
            else if (i && pv[i-1][s[i]-'a'] > 0) pv[i][j] = pv[pv[i-1][s[i]-'a']-1][j];
            //cout << pv[i][j] << " ";
        }
        //cout << endl;
    }
    ans.resize(n, '?');
    rek(0, n-1);
    cout << ans << "\n";
    return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 13516 KB Output is correct
2 Correct 11 ms 13572 KB Output is correct
3 Correct 11 ms 13516 KB Output is correct

Subtask #2
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 13516 KB Output is correct
2 Correct 11 ms 13572 KB Output is correct
3 Correct 11 ms 13516 KB Output is correct
4 Correct 11 ms 13516 KB Output is correct
5 Correct 11 ms 13608 KB Output is correct
6 Correct 11 ms 13628 KB Output is correct
7 Correct 11 ms 13644 KB Output is correct

Subtask #3
63.0 / 63.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 13516 KB Output is correct
2 Correct 11 ms 13572 KB Output is correct
3 Correct 11 ms 13516 KB Output is correct
4 Correct 11 ms 13516 KB Output is correct
5 Correct 11 ms 13608 KB Output is correct
6 Correct 11 ms 13628 KB Output is correct
7 Correct 11 ms 13644 KB Output is correct
8 Correct 12 ms 13608 KB Output is correct
9 Correct 12 ms 13728 KB Output is correct
10 Correct 12 ms 13636 KB Output is correct
11 Correct 12 ms 13760 KB Output is correct
12 Correct 17 ms 14572 KB Output is correct
13 Correct 19 ms 14716 KB Output is correct
14 Correct 19 ms 14916 KB Output is correct
15 Correct 20 ms 15436 KB Output is correct
16 Correct 21 ms 15364 KB Output is correct
17 Correct 21 ms 15452 KB Output is correct
18 Correct 22 ms 14560 KB Output is correct
19 Correct 22 ms 14844 KB Output is correct
20 Correct 17 ms 14780 KB Output is correct
21 Correct 24 ms 15240 KB Output is correct