oj.uz

Submission #812771

# Submission time Handle Problem Language Result Execution time Memory
812771 2023-08-07T10:57:36 Z NeroZein Match (CEOI16_match) C++17
100 / 100
 1702 ms 12572 KB 
#include "bits/stdc++.h"
using namespace std;

string s;
vector<int> ans;

inline bool rec (int l, int r) {
  if (l > r) return true;
  if (l == r) return false; 
  if (s[l] == s[r]) return ans[l] = '(', ans[r] = ')', rec(l + 1, r - 1);
  stack<char> stk;
  stk.push(s[r]); 
  for (int i = r - 1; i > l; --i) {
    if (stk.empty() || stk.top() != s[i]) stk.push(s[i]);
    else stk.pop(); 
    if (s[i - 1] == s[l] && stk.empty()) return ans[l] = '(', ans[i - 1] = ')', rec(l + 1, i - 2) & rec(i, r); 
  }
  return false; 
}

int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  cin >> s;
  ans.resize(s.size());
  bool ok = rec(0, (int) s.size() - 1);
  if (ok) for (char c : ans) cout << c;
  else cout << -1;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 316 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 316 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct

Subtask #3
63.0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 316 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 9 ms 980 KB Output is correct
10 Correct 4 ms 584 KB Output is correct
11 Correct 2 ms 468 KB Output is correct
12 Correct 72 ms 2020 KB Output is correct
13 Correct 33 ms 1328 KB Output is correct
14 Correct 476 ms 7116 KB Output is correct
15 Correct 3 ms 980 KB Output is correct
16 Correct 4 ms 996 KB Output is correct
17 Correct 71 ms 1344 KB Output is correct
18 Correct 7 ms 1104 KB Output is correct
19 Correct 810 ms 7756 KB Output is correct
20 Correct 311 ms 5700 KB Output is correct
21 Correct 1702 ms 12572 KB Output is correct