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Submission #221164

# Submission time Handle Problem Language Result Execution time Memory
221164 2020-04-09T15:44:52 Z DodgeBallMan Match (CEOI16_match) C++14
100 / 100
 27 ms 13696 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 1e5 + 10;
char s[N], ans[N];
int n, last[N][30];

void solve( int l, int r ) {
    if( l > r ) return ;
    if( l % 2 == r % 2 ) {
        printf("-1");
        exit( 0 );
    }
    int idx = last[r][s[l]-'a'];
    ans[l] = '(', ans[idx] = ')';
    solve( l + 1, idx-1 ), solve( idx+1, r );
}

int main()
{
    scanf("%s",&s[1]);
    n = strlen( &s[1] );
    for( int i = 0 ; i < 26 ; i++ ) last[0][i] = 1;
    for( int i = 1 ; i <= n ; i++ ) {
        int now = s[i] - 'a';
        for( int j = 0 ; j < 26 ; j++ ) {
            if( j == now ) last[i][j] = i;
            else last[i][j] = last[last[i-1][now]-1][j];
        }
    }
    solve( 1, n );
    for( int i = 1 ; i <= n ; i++ ) printf("%c",ans[i]);
    return 0;
}

Compilation message

match.cpp: In function 'int main()':
match.cpp:22:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s",&s[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 5 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 5 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 5 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 6 ms 1280 KB Output is correct
10 Correct 6 ms 1280 KB Output is correct
11 Correct 7 ms 1408 KB Output is correct
12 Correct 15 ms 8320 KB Output is correct
13 Correct 16 ms 9088 KB Output is correct
14 Correct 17 ms 9856 KB Output is correct
15 Correct 27 ms 11520 KB Output is correct
16 Correct 18 ms 11520 KB Output is correct
17 Correct 19 ms 12160 KB Output is correct
18 Correct 19 ms 11904 KB Output is correct
19 Correct 22 ms 12800 KB Output is correct
20 Correct 15 ms 8576 KB Output is correct
21 Correct 22 ms 13696 KB Output is correct