Submission #403117

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
403117	2021-05-12 19:22:15	rama_pang	Necklace (Subtask 1-3) (BOI19_necklace1)	C++17	85 / 85	489 ms	106460 KiB

necklace

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  string S, T;
  cin >> S >> T;
  const auto Solve = [&]() -> array<int, 3> {
    int N = S.size();
    int M = T.size();
    array<int, 3> ans = {0, 0, 0};
    // lcs[i][j] = longest common suffix of S[0...i], T[0...j]
    // dp1[i][j] = longest suffix of S[0...i] which is prefix of T[j...M]
    // dp2[i][j] = longest prefix of S[i...N] which is suffix of T[0...j]
    vector<vector<int>> lcs(N, vector<int>(M));
    vector<vector<int>> dp1(N, vector<int>(M));
    vector<vector<int>> dp2(N, vector<int>(M));
    for (int s = 0; s < N; s++) {
      for (int t = 0; t < M; t++) {
        lcs[s][t] = S[s] == T[t] ? ((s > 0 && t > 0 ? lcs[s - 1][t - 1] : 0) + 1) : 0;
      }
    }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

• Subtask 1: 25 / 25
• Subtask 2: 20 / 20
• Subtask 3: 40 / 40