Submission #1117692

#	Time	Username	Problem	Language	Result	Execution time	Memory
1117692		vjudge1	Match (CEOI16_match)	C++17	0 / 100	1 ms	336 KiB

match

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define endl "\n"

using namespace std;
using namespace __gnu_pbds;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T, typename key = less_equal<T>>
using ordered_set = tree<T, null_type, key, rb_tree_tag, tree_order_statistics_node_update>;
bool cbs(string s)
{
    ll bal = 0;
    for (char i : s)
    {
        bal -= i == ')' ? -1 : 1;
        if (bal < 0) return false;
    }
    return true;
}
void solve()
{
    string s;
    cin >> s;
    ll n = s.size();
    string b(n, '(');
    for (ll msk = 0; msk < (1 << n); msk++)
    {
        for (ll i = 0; i < n; i++) b[i] = (msk >> i & 1) ? ')' : '(';
        if (!cbs(b)) continue;
        bool ok = true;
        for (ll i = 0; i < n and ok; i++)
        for (ll j = i + 1; j < n and ok; j++)
            if (j == i + 1 or (cbs(s.substr(i + 1, j - i - 1)) and s[i] == '(' and s[j] == ')'))
                if (s[i] != s[j]) ok = false;
        if (ok)
        {
            cout << b << endl;
            return;
        }
    }
    cout << "-1\n";
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    ll t = 1;   
    // precomp();
    // cin >> t;
    for (ll cs = 1; cs <= t; cs++)
        solve();
    // cerr << "\nTime elapsed: " << clock() * 1000.0 / CLOCKS_PER_SEC << " ms\n";
}

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