Submission #604417

#	Time	Username	Problem	Language	Result	Execution time	Memory
604417		Aleee	Match (CEOI16_match)	C++14	0 / 100	0 ms	212 KiB

match

#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define all(a) (a).begin(), (a).end()
#define endl '\n'
#define forn(i, l, n) for (int i = l; i < int(n); i++)

typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int, int> pii;

const int INF = 1e9 + 7;

int main() // Ale C.
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  // freopen("output.txt", "w", stdout);
  string str;
  cin >> str;

  stack<char> st;
  string ans = "(";
  st.push(str[0]);
  int test = 1;
  forn(i, 1, str.length())
  {
    if (test < 0)
      break;
    if (st.empty())
    {
      ans += "(";
      st.push(str[i]);
      test++;
      continue;
    }
    if (st.top() != str[i])
    {
      ans += "(";
      st.push(str[i]);
      test++;
    }
    else
    {
      ans += ")";
      st.pop();
      test--;
    }
  }
  cout << (test == 0 ? ans : "-1");

  return 0;
}

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