oj.uz

Submission #231434

# Submission time Handle Problem Language Result Execution time Memory
231434 2020-05-13T15:51:58 Z nicolaalexandra Match (CEOI16_match) C++14
100 / 100
 22 ms 13688 KB 
#include <bits/stdc++.h>
#define DIM 100010
using namespace std;
char v[DIM],sol[DIM],s[DIM];
int poz[DIM][30];
int n,i,j;

void solve (int st, int dr){
    /// in st pun ( si trb sa gasesc )
    if (st >= dr)
        return;
    if (st == dr-1){
        sol[st] = '(';
        sol[dr] = ')';
        return;
    }

    /*for (i=dr;i>st;--i){ /// aparent asta a mers bine in practica
        if (!k && v[i] == v[st])
            break;
        if (k && s[k] == v[i])
            k--;
        else s[++k] = v[i];
    }*/

    sol[st] = '(';
    int idx = poz[dr][v[st]-'a'];
    sol[idx] = ')';

    solve (st+1,idx-1);
    solve (idx+1,dr);
}

int main (){

    //ifstream cin ("match.in");
    //ofstream cout ("match.out");

    cin>>v+1;
    n = strlen (v+1);

    /// verific daca am solutie
    int k = 0;
    s[++k] = v[1];
    for (i=2;i<=n;++i){
        if (k && s[k] == v[i])
            k--;
        else s[++k] = v[i];
    }

    if (k){
        cout<<-1<<"\n";
        return 0;
    }

    for (i=1;i<=n;i++){
        for (j=0;j<26;j++){
            if (poz[i-1][v[i]-'a'])
                poz[i][j] = poz[poz[i-1][v[i]-'a']-1][j];
        }
        poz[i][v[i]-'a'] = i;
    }

    solve (1,n);

    cout<<sol+1<<"\n";


    return 0;
}

Compilation message

match.cpp: In function 'int main()':
match.cpp:39:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     cin>>v+1;
          ~^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 5 ms 640 KB Output is correct

Subtask #3
63.0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 5 ms 640 KB Output is correct
8 Correct 6 ms 1152 KB Output is correct
9 Correct 7 ms 1280 KB Output is correct
10 Correct 6 ms 1280 KB Output is correct
11 Correct 6 ms 1408 KB Output is correct
12 Correct 14 ms 8320 KB Output is correct
13 Correct 15 ms 9088 KB Output is correct
14 Correct 17 ms 9856 KB Output is correct
15 Correct 18 ms 11520 KB Output is correct
16 Correct 17 ms 11520 KB Output is correct
17 Correct 18 ms 12160 KB Output is correct
18 Correct 20 ms 11904 KB Output is correct
19 Correct 20 ms 12800 KB Output is correct
20 Correct 17 ms 8704 KB Output is correct
21 Correct 22 ms 13688 KB Output is correct