# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
938399 | 2024-03-05T05:48:38 Z | Ghulam_Junaid | Three Friends (BOI14_friends) | C++17 | 42 ms | 13632 KB |
#include <bits/stdc++.h> using namespace std; typedef long long ll; const ll mod = 1e9 + 7; const ll base = 727; ll k; set<int> st; void check(string s, string t, bool is_suff){ int j = 0; int i = 0; int ind = t.size() - 1; for (; i < s.size() and j < t.size();){ if (s[i] == t[j]){ i++; j++; } else{ ind = j; j++; } } if (i == s.size()) st.insert(ind + k * is_suff); j = t.size() - 1; ind = 0; for (int i = s.size() - 1; i >= 0 and j >= 0;){ if (s[i] == t[j]){ i--; j--; } else{ ind = j; j--; } } if (i == -1) st.insert(ind + k * is_suff); } int main(){ ll n; string s; cin >> n >> s; if (n % 2 == 0){ cout << "NOT POSSIBLE" << endl; return 0; } k = n / 2; ll poss = 0; string P, S; for (ll i = 0; i < k; i ++) P += s[i]; for (ll i = k + 1; i < n; i ++) S += s[i]; string ans; string Q = s[k] + S; check(P, Q, 1); if (st.size()) ans = P; int prev = st.size(); Q = P + s[k]; check(S, Q, 0); if (st.size() - prev) ans = S; if (st.size() > 1) cout << "NOT UNIQUE" << endl; else if (st.size() == 0) cout << "NOT POSSIBLE" << endl; else cout << ans << endl; }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 1 ms | 344 KB | Output is correct |
2 | Correct | 0 ms | 348 KB | Output is correct |
3 | Correct | 0 ms | 348 KB | Output is correct |
4 | Correct | 0 ms | 348 KB | Output is correct |
5 | Correct | 0 ms | 372 KB | Output is correct |
6 | Correct | 0 ms | 348 KB | Output is correct |
7 | Correct | 0 ms | 348 KB | Output is correct |
8 | Correct | 0 ms | 348 KB | Output is correct |
9 | Correct | 0 ms | 348 KB | Output is correct |
10 | Correct | 0 ms | 348 KB | Output is correct |
11 | Correct | 1 ms | 348 KB | Output is correct |
12 | Correct | 0 ms | 440 KB | Output is correct |
13 | Correct | 0 ms | 348 KB | Output is correct |
14 | Correct | 0 ms | 348 KB | Output is correct |
15 | Correct | 0 ms | 348 KB | Output is correct |
16 | Correct | 1 ms | 348 KB | Output is correct |
17 | Correct | 1 ms | 348 KB | Output is correct |
18 | Correct | 0 ms | 348 KB | Output is correct |
19 | Correct | 0 ms | 348 KB | Output is correct |
20 | Correct | 0 ms | 348 KB | Output is correct |
21 | Correct | 1 ms | 344 KB | Output is correct |
22 | Correct | 1 ms | 348 KB | Output is correct |
23 | Correct | 0 ms | 348 KB | Output is correct |
24 | Correct | 0 ms | 344 KB | Output is correct |
25 | Correct | 0 ms | 344 KB | Output is correct |
26 | Correct | 0 ms | 348 KB | Output is correct |
27 | Correct | 1 ms | 348 KB | Output is correct |
28 | Correct | 0 ms | 348 KB | Output is correct |
29 | Correct | 1 ms | 348 KB | Output is correct |
30 | Correct | 0 ms | 600 KB | Output is correct |
31 | Correct | 0 ms | 432 KB | Output is correct |
32 | Correct | 0 ms | 436 KB | Output is correct |
33 | Correct | 0 ms | 348 KB | Output is correct |
34 | Correct | 0 ms | 348 KB | Output is correct |
35 | Correct | 0 ms | 348 KB | Output is correct |
36 | Correct | 0 ms | 348 KB | Output is correct |
37 | Correct | 0 ms | 344 KB | Output is correct |
38 | Correct | 0 ms | 348 KB | Output is correct |
39 | Correct | 1 ms | 348 KB | Output is correct |
40 | Correct | 0 ms | 348 KB | Output is correct |
41 | Correct | 0 ms | 420 KB | Output is correct |
42 | Correct | 0 ms | 348 KB | Output is correct |
43 | Correct | 0 ms | 352 KB | Output is correct |
44 | Correct | 0 ms | 344 KB | Output is correct |
45 | Correct | 0 ms | 356 KB | Output is correct |
46 | Correct | 0 ms | 440 KB | Output is correct |
47 | Correct | 0 ms | 344 KB | Output is correct |
48 | Correct | 0 ms | 348 KB | Output is correct |
49 | Correct | 1 ms | 344 KB | Output is correct |
50 | Incorrect | 0 ms | 348 KB | Output isn't correct |
51 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 42 ms | 12124 KB | Output is correct |
2 | Correct | 37 ms | 12988 KB | Output is correct |
3 | Correct | 36 ms | 12228 KB | Output is correct |
4 | Correct | 36 ms | 13632 KB | Output is correct |
5 | Correct | 36 ms | 12992 KB | Output is correct |
6 | Correct | 28 ms | 7748 KB | Output is correct |
7 | Incorrect | 35 ms | 11688 KB | Output isn't correct |
8 | Halted | 0 ms | 0 KB | - |