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Submission #599256

# Submission time Handle Problem Language Result Execution time Memory
599256 2022-07-19T12:06:55 Z Jomnoi Three Friends (BOI14_friends) C++17
100 / 100
 29 ms 5192 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAX_N = 2e6 + 5;

char U[MAX_N];

int main() {
    cin.tie(nullptr)->sync_with_stdio(false);

    int N;
    cin >> N >> (U + 1);

    if(N % 2 == 0) {
        cout << "NOT POSSIBLE";
        return 0;
    }

    int M = N / 2;
    int l = 1, r = M + 1, cnt = 0;
    bool frnt = false, bck = false;
    while(l <= M and r <= N) {
        if(U[l] == U[r]) {
            l++, r++;
        }
        else {
            cnt++;
            r++;
        }
    }
    if(cnt <= 1) {
        frnt = true;
    }

    l = 1, r = M + 2, cnt = 0;
    while(l <= M + 1 and r <= N) {
        if(U[l] == U[r]) {
            l++, r++;
        }
        else {
            cnt++;
            l++;
        }
    }
    if(cnt <= 1) {
        bck = true;
    }

    if(frnt == true and bck == true) {
        cnt = 0;
        for(int i = 1; i <= M; i++) {
            if(U[i] == U[M + 1 + i]) {
                cnt++;
            }
        }

        if(cnt == M) {
            for(int i = 1; i <= M; i++) {
                cout << U[i];
            }
        }
        else {
            cout << "NOT UNIQUE";
        }
    }
    else if(frnt == true) {
        for(int i = 1; i <= M; i++) {
            cout << U[i];
        }
    }
    else if(bck == true) {
        for(int i = M + 2; i <= N; i++) {
            cout << U[i];
        }
    }
    else {
        cout << "NOT POSSIBLE";
    }
    return 0;
}

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 328 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 276 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 328 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 1 ms 212 KB Output is correct
45 Correct 1 ms 212 KB Output is correct
46 Correct 1 ms 328 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 0 ms 212 KB Output is correct
52 Correct 1 ms 324 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Correct 0 ms 212 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 5152 KB Output is correct
2 Correct 25 ms 5188 KB Output is correct
3 Correct 29 ms 5192 KB Output is correct
4 Correct 29 ms 5192 KB Output is correct
5 Correct 25 ms 5192 KB Output is correct
6 Correct 4 ms 4172 KB Output is correct
7 Correct 26 ms 5136 KB Output is correct
8 Correct 6 ms 3844 KB Output is correct
9 Correct 29 ms 4636 KB Output is correct
10 Correct 22 ms 4624 KB Output is correct
11 Correct 6 ms 3476 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 328 KB Output is correct
15 Correct 0 ms 324 KB Output is correct
16 Correct 0 ms 328 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 324 KB Output is correct
23 Correct 0 ms 328 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 324 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 0 ms 328 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 324 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 1 ms 212 KB Output is correct
41 Correct 1 ms 212 KB Output is correct
42 Correct 1 ms 324 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 1 ms 212 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 324 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 332 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 0 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Correct 1 ms 212 KB Output is correct