oj.uz

답안 #125437

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
125437 2019-07-05T09:53:33 Z wasyl 세 명의 친구들 (BOI14_friends) C++11
100 / 100
 19 ms 9112 KB 
#include <bits/stdc++.h>
using namespace std;

constexpr int nax = 2e6 + 1;

int n;
string s;

pair< bool, string > spr(const string& a, const string& b)
{
    //cerr << a << ' ' << b << ' ';
    int pt = 0;
    for (int i = 0; i < a.size(); ++i)
        if (pt < b.size() and a[i] == b[pt])
            ++pt;
    //cerr << pt << '\n';

    if (pt < b.size()) return {false, ""};
    else return {true, b};
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    cin >> n >> s;

    if (n % 2 == 0)
        return cout << "NOT POSSIBLE" << '\n', 0;

    int d = (n - 1) / 2;
    pair< bool, string > p, q;
    p = spr(s.substr(0, d + 1), s.substr(d + 1, d));
    q = spr(s.substr(d, d + 1), s.substr(0, d));

    if (p.first and q.first and (p.second != q.second))
        return cout << "NOT UNIQUE" << '\n', 0;
    if (not p.first) swap(p, q);
    if (not p.first)
        cout << "NOT POSSIBLE" << '\n';
    else
        cout << p.second << '\n';
}

Compilation message

friends.cpp: In function 'std::pair<bool, std::__cxx11::basic_string<char> > spr(const string&, const string&)':
friends.cpp:13:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < a.size(); ++i)
                     ~~^~~~~~~~~~
friends.cpp:14:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (pt < b.size() and a[i] == b[pt])
             ~~~^~~~~~~~~~
friends.cpp:18:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (pt < b.size()) return {false, ""};
         ~~~^~~~~~~~~~

Subtask #1
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 4 ms 376 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 3 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 3 ms 540 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 380 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 412 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 2 ms 376 KB Output is correct
40 Correct 2 ms 380 KB Output is correct
41 Correct 2 ms 376 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Correct 2 ms 376 KB Output is correct
44 Correct 2 ms 376 KB Output is correct
45 Correct 2 ms 376 KB Output is correct
46 Correct 2 ms 376 KB Output is correct
47 Correct 2 ms 376 KB Output is correct
48 Correct 2 ms 376 KB Output is correct
49 Correct 2 ms 376 KB Output is correct
50 Correct 2 ms 376 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 2 ms 376 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 2 ms 376 KB Output is correct

Subtask #2
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 8228 KB Output is correct
2 Correct 19 ms 8344 KB Output is correct
3 Correct 15 ms 8344 KB Output is correct
4 Correct 15 ms 8216 KB Output is correct
5 Correct 15 ms 8216 KB Output is correct
6 Correct 8 ms 4376 KB Output is correct
7 Correct 15 ms 9112 KB Output is correct
8 Correct 13 ms 7448 KB Output is correct
9 Correct 13 ms 7448 KB Output is correct
10 Correct 13 ms 7448 KB Output is correct
11 Correct 11 ms 5400 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 2 ms 376 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 2 ms 376 KB Output is correct
42 Correct 2 ms 248 KB Output is correct
43 Correct 2 ms 376 KB Output is correct
44 Correct 2 ms 376 KB Output is correct
45 Correct 2 ms 376 KB Output is correct
46 Correct 2 ms 376 KB Output is correct
47 Correct 2 ms 376 KB Output is correct
48 Correct 2 ms 376 KB Output is correct
49 Correct 2 ms 376 KB Output is correct
50 Correct 2 ms 376 KB Output is correct
51 Correct 2 ms 380 KB Output is correct
52 Correct 2 ms 376 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 2 ms 376 KB Output is correct