Submission #2134939
Source Code Expand
#include<bits/stdc++.h> #define rep(i,a,b) for(int i=a;i<b;i++) #define rrep(i,a,b) for(int i=a;i>=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() #pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; } template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; } //--------------------------------------------------------------------------------------------------- /*--------------------------------------------------------------------------------------------------- ∧_∧ ∧_∧ (´<_` ) Welcome to My Coding Space! ( ´_ゝ`) / ⌒i / \ | | / / ̄ ̄ ̄ ̄/ | __(__ニつ/ _/ .| .|____ \/____/ (u ⊃ ---------------------------------------------------------------------------------------------------*/ string S; int K; //--------------------------------------------------------------------------------------------------- int memo[303][303][303]; int f(int l, int r, int k) { if (memo[l][r][k]) return memo[l][r][k]; int res = 0; if (l == r) res = 1; else if (l + 1 == r) { if (S[l] == S[r] or 0 < k) res = 2; else res = 1; } else { chmax(res, f(l + 1, r, k)); chmax(res, f(l, r - 1, k)); if (S[l] == S[r]) chmax(res, f(l + 1, r - 1, k) + 2); else if (0 < k) chmax(res, f(l + 1, r - 1, k - 1) + 2); } return memo[l][r][k] = res; } //--------------------------------------------------------------------------------------------------- void _main() { cin >> S >> K; int N = S.length(); cout << f(0, N - 1, K) << endl; }
Submission Info
Submission Time | |
---|---|
Task | D - Reversed LCS |
User | hamayanhamayan |
Language | C++14 (GCC 5.4.1) |
Score | 900 |
Code Size | 2090 Byte |
Status | AC |
Exec Time | 58 ms |
Memory | 108928 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 900 / 900 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | s1.txt, s2.txt |
All | 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, s1.txt, s2.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | AC | 26 ms | 108928 KB |
02.txt | AC | 55 ms | 108800 KB |
03.txt | AC | 52 ms | 106752 KB |
04.txt | AC | 39 ms | 106752 KB |
05.txt | AC | 53 ms | 106752 KB |
06.txt | AC | 25 ms | 108800 KB |
07.txt | AC | 55 ms | 108800 KB |
08.txt | AC | 54 ms | 108800 KB |
09.txt | AC | 23 ms | 106752 KB |
10.txt | AC | 55 ms | 106752 KB |
11.txt | AC | 53 ms | 106752 KB |
12.txt | AC | 47 ms | 108800 KB |
13.txt | AC | 25 ms | 108800 KB |
14.txt | AC | 54 ms | 108800 KB |
15.txt | AC | 54 ms | 106752 KB |
16.txt | AC | 33 ms | 106752 KB |
17.txt | AC | 46 ms | 106752 KB |
18.txt | AC | 53 ms | 108800 KB |
19.txt | AC | 53 ms | 108800 KB |
20.txt | AC | 54 ms | 108800 KB |
21.txt | AC | 26 ms | 106752 KB |
22.txt | AC | 53 ms | 106752 KB |
23.txt | AC | 25 ms | 106752 KB |
24.txt | AC | 41 ms | 108800 KB |
25.txt | AC | 36 ms | 108800 KB |
26.txt | AC | 27 ms | 108800 KB |
27.txt | AC | 24 ms | 106752 KB |
28.txt | AC | 58 ms | 106752 KB |
29.txt | AC | 23 ms | 106752 KB |
30.txt | AC | 24 ms | 108800 KB |
31.txt | AC | 25 ms | 108800 KB |
32.txt | AC | 34 ms | 108800 KB |
33.txt | AC | 26 ms | 106752 KB |
34.txt | AC | 23 ms | 106752 KB |
35.txt | AC | 26 ms | 106752 KB |
36.txt | AC | 57 ms | 108800 KB |
37.txt | AC | 25 ms | 108800 KB |
38.txt | AC | 55 ms | 108800 KB |
39.txt | AC | 26 ms | 106752 KB |
40.txt | AC | 56 ms | 106752 KB |
41.txt | AC | 1 ms | 256 KB |
42.txt | AC | 1 ms | 256 KB |
43.txt | AC | 24 ms | 108800 KB |
44.txt | AC | 1 ms | 256 KB |
45.txt | AC | 1 ms | 256 KB |
46.txt | AC | 1 ms | 256 KB |
47.txt | AC | 1 ms | 256 KB |
s1.txt | AC | 2 ms | 2304 KB |
s2.txt | AC | 2 ms | 4480 KB |