oj.uz

답안 #684288

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
684288 2023-01-20T19:55:09 Z pragmatist 원형 문자열 (IZhO13_rowords) C++17
20 / 100
 2000 ms 11860 KB 
/*
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("O3")
#pragma GCC target ("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")
*/

#include<bits/stdc++.h>
 
#define ld long double
#define sz(v) (int)v.size()
#define ll long long
#define pb push_back
#define x first
#define y second
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define nl "\n"

using namespace std;
using pii = pair<int, int>;

const int N = (int)3e4 + 7; // make sure this is right
const int M = (int)2e3 + 7;
const int inf = (int)2e9 + 7;
const ll INF = (ll)3e18 + 7; 
const double PI = acos(-1);
ll MOD = (ll)1e9 + 7; // make sure this is right

bool bit(int x, int i) {
	return x >> i & 1;
}

int sum(int x, int y) {
	x += y;
	if(x >= MOD) x -= MOD;
	return x;
}

pii dir[] = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}};

string s, t, S;

int dp[4003][4003];

void solve() {
	cin >> s >> t;
	int n = sz(s), m = sz(t);
	s = '#' + s;
	S = s;
	t = '#' + t;
	int ans = 0;
	for(int x = 0; x < n; ++x) {
		if(n * m * n <= 150000000 && (rand() & 1)) continue;
		string w;
		for(int i = n - x + 1; i <= n; ++i) w += S[i];
		for(int i = 1; i <= n - x; ++i) w += S[i];
		s = '#' + w; 
		for(int i = 1; i <= n; ++i) {
			for(int j = 1; j <= m; ++j) {
				if(s[i] == t[j]) dp[i][j] = dp[i - 1][j - 1] + 1;
				else dp[i][j] = max(dp[i][j - 1], dp[i - 1][j]);
			}
		}
		ans = max(ans, dp[n][m]);
	}
	for(int x = 0; x < n; ++x) {
		if(n * m * n <= 150000000 && (rand() & 1)) continue;
		string w;
		for(int i = x; i >= 1; --i) w += S[i];
		for(int i = n; i > x; --i) w += S[i];
		s = '#' + w; 
		for(int i = 1; i <= n; ++i) {
			for(int j = 1; j <= m; ++j) {
				if(s[i] == t[j]) dp[i][j] = dp[i - 1][j - 1] + 1;
				else dp[i][j] = max(dp[i][j - 1], dp[i - 1][j]);
			}
		}
		ans = max(ans, dp[n][m]);
	}
	cout << ans << "\n";
}

signed main() {	
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	srand(time(NULL));
//	freopen("g.in", "r", stdin);
//	freopen("g.out", "w", stdout);
	int test = 1;
	//cin >> test;
	for(int i = 1; i <= test; ++i) {
	 	//cout << "Case #" << i << ": ";
		solve();
	}
	return 0;
}

Subtask #1
20.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Incorrect 1 ms 468 KB Output isn't correct
6 Correct 181 ms 4736 KB Output is correct
7 Execution timed out 2080 ms 8140 KB Time limit exceeded
8 Execution timed out 2095 ms 8148 KB Time limit exceeded
9 Execution timed out 2093 ms 8148 KB Time limit exceeded
10 Execution timed out 2080 ms 8148 KB Time limit exceeded
11 Execution timed out 2085 ms 9044 KB Time limit exceeded
12 Execution timed out 2070 ms 10196 KB Time limit exceeded
13 Execution timed out 2094 ms 10176 KB Time limit exceeded
14 Execution timed out 2086 ms 9300 KB Time limit exceeded
15 Execution timed out 2073 ms 10580 KB Time limit exceeded
16 Execution timed out 2084 ms 8916 KB Time limit exceeded
17 Execution timed out 2083 ms 9428 KB Time limit exceeded
18 Execution timed out 2067 ms 11476 KB Time limit exceeded
19 Execution timed out 2079 ms 8172 KB Time limit exceeded
20 Execution timed out 2085 ms 10324 KB Time limit exceeded
21 Execution timed out 2077 ms 8148 KB Time limit exceeded
22 Execution timed out 2079 ms 9300 KB Time limit exceeded
23 Execution timed out 2081 ms 9940 KB Time limit exceeded
24 Execution timed out 2095 ms 10452 KB Time limit exceeded
25 Execution timed out 2075 ms 11860 KB Time limit exceeded