답안 #250907

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
250907	2020-07-19T12:03:57 Z	srvlt	원형 문자열 (IZhO13_rowords)	C++14	12 / 100	158 ms	508 KB

rowords

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define ll long long
#define ld long double
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define SZ(x) (int)(x).size()
template <typename T> using ord_set = tree <T, null_type, less <T>, rb_tree_tag, tree_order_statistics_node_update>;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int n0 = 2003, inf = 1e9;

struct T {
	int len, d1, d2;
	void clean() {
		len = 0, d1 = -inf, d2 = -inf;
	}
	void upd(const T & t) {
		if (t.len + 1 > len || (t.len == len && (max(0, t.d1) + 1 < d1 || max(0, t.d2) + 1 < d2))) {
			len = t.len + 1;
			d1 = max(0, t.d1) + 1;
			d2 = max(0, t.d2) + 1;
		}
	}
	void mx(const T & t) {
		if (t.len > len || (t.len == len && (t.d1 + 1 < d1 || t.d2 + 1 < d2))) {
			len = t.len;
			d1 = t.d1 + 1;
			d2 = t.d2 + 1;
		}
	}
};
T dp[n0];

int LCS(const string & a, const string & b) {
	int n = SZ(a), m = SZ(b);
	for (int j = 1; j <= m; j++)
		dp[j].clean();
	for (int i = 1; i <= n; i++) {
		for (int j = m; j >= 1; j--)
			if (a[i - 1] == b[j - 1])
				dp[j].upd(dp[j - 1]);
		for (int j = 1; j <= m; j++)
			dp[j].mx(dp[j - 1]);
		for (int j = 1; j <= m; j++)
			if (dp[j].d1 >= n / 2 || dp[j].d2 >= m / 2)
				dp[j].clean();
	}
	int res = 0;
	for (int j = 1; j <= m; j++)
		res = max(res, dp[j].len);
	return res;
}

int main() {
	ios_base::sync_with_stdio(false), cin.tie(NULL);
	#ifdef LOCAL
		freopen("input.txt", "r", stdin);
	#endif
	
	string a, b, A, B;
	cin >> a >> b;
	int res = 0;
	for (int i = 0; i < 4; i++) {
		A = a, B = b;
		if (i & 1) reverse(all(A));
		if (i & 2) reverse(all(B));
		A += A, B += B;
		res = max(res, LCS(A, B));
	}
	cout << res;
}

Subtask #1

12.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	0 ms	384 KB	Output isn't correct
2	Incorrect	0 ms	384 KB	Output isn't correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Incorrect	1 ms	384 KB	Output isn't correct
6	Incorrect	9 ms	384 KB	Output isn't correct
7	Correct	46 ms	420 KB	Output is correct
8	Incorrect	140 ms	504 KB	Output isn't correct
9	Incorrect	133 ms	508 KB	Output isn't correct
10	Incorrect	107 ms	504 KB	Output isn't correct
11	Incorrect	106 ms	416 KB	Output isn't correct
12	Incorrect	88 ms	384 KB	Output isn't correct
13	Incorrect	158 ms	384 KB	Output isn't correct
14	Incorrect	122 ms	384 KB	Output isn't correct
15	Incorrect	137 ms	384 KB	Output isn't correct
16	Incorrect	150 ms	384 KB	Output isn't correct
17	Incorrect	78 ms	384 KB	Output isn't correct
18	Incorrect	134 ms	504 KB	Output isn't correct
19	Incorrect	101 ms	384 KB	Output isn't correct
20	Incorrect	146 ms	384 KB	Output isn't correct
21	Incorrect	22 ms	504 KB	Output isn't correct
22	Incorrect	42 ms	384 KB	Output isn't correct
23	Incorrect	59 ms	384 KB	Output isn't correct
24	Incorrect	61 ms	408 KB	Output isn't correct
25	Incorrect	81 ms	384 KB	Output isn't correct