oj.uz

답안 #175775

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
175775 2020-01-07T10:56:38 Z Ruxandra985 괄호 문자열 (CEOI16_match) C++14
37 / 100
 2000 ms 8140 KB 
/// oare cat de bine merge in practica?
#include <bits/stdc++.h>
#pragma GCC optimize "Ofast"
using namespace std;
int sp[30][100010];
char sol[100010] , s[100010];
int ok;
int stk[100010];
int match (int st , int dr){
    int i , elem = 0;
    if (st > dr)
        return 1;
    for (i=0;i<'z' - 'a';++i){
        if (((sp[i][dr] - sp[i][st-1]) & 1) == 1)
            return 0;
    }

    for (i=st;i<=dr;++i){
        if (stk[elem] == s[i])
            elem--;
        else stk[++elem] = s[i];
    }
    return (elem == 0);

}
void solve (int st , int dr){
    int i;
    if (st > dr)
        return;
    if (!ok) /// nu mai are rost
        return;
    /// stii ca pe st pui ( , gaseste i match ul

    for (i = ( ( (dr & 1) != (st & 1) ) ? dr : dr - 1); i >= st + 1 ; i-=2){
        if (match(st + 1 , i - 1) && match(i + 1 , dr))
            break;
    }
    if (i < st + 1){
        ok = 0;
        return;
    }
    else {
        sol[st] = '(';
        sol[i] = ')';
        solve(st + 1 , i - 1);
        solve (i + 1 , dr);
    }
}
int main()
{
    FILE *fin = stdin;
    FILE *fout = stdout;
    int n , i;
    fgets (s+1 , 100010 , fin);

    n = 0;
    while ( 'a' <= s[n+1] && s[n+1] <= 'z' ){
        n++;
        s[n]-='a';

        for (i=0;i<='z'-'a';++i){
            sp[i][n] = sp[i][n-1] + (s[n] == i);
        }
    }
    stk[0] = -1;
    ok = 1;
    solve (1 , n);
    if (ok == 0){
        fprintf (fout,"%d\n",-1);
    }
    else {
        fputs (sol+1,fout);
    }
    return 0;
}

Compilation message

match.cpp: In function 'int main()':
match.cpp:54:11: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     fgets (s+1 , 100010 , fin);
     ~~~~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/stdio.h:936:0,
                 from /usr/include/c++/7/cstdio:42,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:46,
                 from match.cpp:2:
In function 'char* fgets(char*, int, FILE*)',
    inlined from 'int main()' at match.cpp:54:11:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:261:58: warning: call to '__fgets_chk_warn' declared with attribute warning: fgets called with bigger size than length of destination buffer
  return __fgets_chk_warn (__s, __bos (__s), __n, __stream);
                                                          ^

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct

Subtask #2
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 4 ms 632 KB Output is correct
7 Correct 7 ms 632 KB Output is correct

Subtask #3
0 / 63.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 4 ms 632 KB Output is correct
7 Correct 7 ms 632 KB Output is correct
8 Correct 19 ms 1144 KB Output is correct
9 Correct 182 ms 1252 KB Output is correct
10 Correct 15 ms 1272 KB Output is correct
11 Correct 19 ms 1272 KB Output is correct
12 Correct 952 ms 7060 KB Output is correct
13 Correct 988 ms 7692 KB Output is correct
14 Execution timed out 2037 ms 8140 KB Time limit exceeded
15 Halted 0 ms 0 KB -