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Submission #1117837

# Submission time Handle Problem Language Result Execution time Memory
1117837 2024-11-24T08:47:42 Z AtabayRajabli Match (CEOI16_match) C++17
10 / 100
 5 ms 20828 KB 
#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define int long long
using namespace std;

const int sz = 1e5 + 123;
string s, t;
int n, last[26][sz];

void f(int l, int r)
{
    if(l > r) return;
    int pos = last[s[l] - 'a'][r];
    t[l] = '(', t[pos] = ')';
    f(l + 1, pos - 1), f(pos + 1, r);
}

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    cin >> s;
    n = s.size();
    stack<int> st;

    for(int i = 0; i < n; i++)
    {
        if(!st.empty() && s[st.top()] == s[i])
        {
            st.pop();
        }
        else
        {
            st.push(i);
        }
    }

    if(!st.empty())
    {
        cout << -1;
        return 0;
    }

    memset(last, -1, sizeof(last));
    for(int i = 0; i < n; i++)
    {
        int l = s[i] - 'a';
        last[l][i] = i;
        if(i == 0) continue;
        for(int j = 0; j < 26; j++)
        {
            last[j][i] = max(last[j][i - 1], last[j][i]);
        }
    }
    
    t.resize(n);
    f(0, n - 1);

    cout << t;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 20816 KB Output is correct
2 Correct 4 ms 20816 KB Output is correct
3 Correct 1 ms 336 KB Output is correct

Subtask #2
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 20816 KB Output is correct
2 Correct 4 ms 20816 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Incorrect 5 ms 20828 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 20816 KB Output is correct
2 Correct 4 ms 20816 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Incorrect 5 ms 20828 KB Output isn't correct
5 Halted 0 ms 0 KB -