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Submission #341636

# Submission time Handle Problem Language Result Execution time Memory
341636 2020-12-30T10:36:38 Z phathnv Match (CEOI16_match) C++11
100 / 100
 20 ms 12648 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 1e5 + 1;
const int AL = 26;

int n, match[N], pre[N][AL];
char answer[N];
string s;

void readInput(){
    cin >> s;
    n = s.size();
    s = '*' + s;
}

void process(int l, int r){
    if (l > r)
        return;
    int p = pre[r][s[l] - 'a'];
    if (!p){
        cout << -1;
        exit(0);
    }
    answer[l] = '(';
    answer[p] = ')';
    process(l + 1, p - 1);
    process(p + 1, r);
}

void solve(){
    for(int i = 1; i <= n; i++)
        for(int j = 0; j < AL; j++)
            if (s[i] - 'a' == j)
                pre[i][j] = i;
            else
                pre[i][j] = pre[max(0, pre[i - 1][s[i] - 'a'] - 1)][j];
    process(1, n);
    for(int i = 1; i <= n; i++)
        cout << answer[i];
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    readInput();
    solve();
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 620 KB Output is correct

Subtask #3
63.0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 620 KB Output is correct
8 Correct 2 ms 1004 KB Output is correct
9 Correct 2 ms 1132 KB Output is correct
10 Correct 2 ms 1132 KB Output is correct
11 Correct 2 ms 1260 KB Output is correct
12 Correct 11 ms 7788 KB Output is correct
13 Correct 12 ms 8428 KB Output is correct
14 Correct 13 ms 9448 KB Output is correct
15 Correct 16 ms 10912 KB Output is correct
16 Correct 15 ms 10912 KB Output is correct
17 Correct 16 ms 11496 KB Output is correct
18 Correct 16 ms 10728 KB Output is correct
19 Correct 18 ms 11752 KB Output is correct
20 Correct 11 ms 8044 KB Output is correct
21 Correct 20 ms 12648 KB Output is correct