oj.uz

답안 #205223

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
205223 2020-02-28T10:40:33 Z hanagasumi 유괴 2 (JOI17_abduction2) C++17
27 / 100
 5000 ms 20280 KB 
#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <deque>
#include <map>
#include <set>
#include <complex>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <chrono>
 
#define ft first
#define sc second
#define pb push_back
#define len(v) (int)v.size()
// #define int ll

using namespace std;
typedef long long ll;
typedef long double ld;

vector<int> logt;

void built_logt(int n) {
	logt = vector<int> (n + 2, 0);
	int cnt = 0, now = 1;
	for (int i = 0; i <= n + 1; i++) {
		if(now * 2 == i) {
			now *= 2;
			cnt++;
		}
		logt[i] = cnt;
	}
	return;
}

struct sparse {
	vector<vector<int>> table;
	int n, log;
	sparse() {}
	sparse(vector<int>& have) {
		n = len(have);
		log = 1;
		while((1 << log) <= n) 
			log *= 2;
		table = vector<vector<int>> (log + 1, vector<int> (n + 1, 0));
		for (int i = 0; i < n; i++) {
			table[0][i] = have[i];
		}
		for (int logn = 1; logn < log; logn++) {
			for (int i = 0; i < n; i++) {
				int nxt = min(n - 1, (1 << (logn - 1)) + i);
				table[logn][i] = max(table[logn - 1][i], table[logn - 1][nxt]);
			}
		}
		return;
	}
	int get(int l, int r) {
		int lenn = (r - l + 1);
		int logn = logt[lenn];
		int pred = (r - (1 << logn) + 1);
		int ans = max(table[logn][l], table[logn][pred]);
		return ans;
	}
};

map<pair<int, int>, int> dp;
int w, h;
vector<int> a;
vector<int> b;
sparse as;
sparse bs;

int solve(int i, int j) {
	// cout << i << " " << j << endl;
	// cout << a[i] << " " << b[j] << endl;
	if(dp.count({i, j})) 
		return dp[{i, j}];
	if(a[i] > b[j]) {
		int r = w;
		for (int now = j; now < w; now++) {
			if(bs.get(j, now) > a[i]) {
				r = now;
				break;
			}
		}
		if(r == w) 
			dp[{i, j}] = max(dp[{i, j}], w - j);
		else
			dp[{i, j}] = max(dp[{i, j}], r - j + solve(i, r));

		int l = -1;
		for (int now = j; now >= 0; now--) {
			if(bs.get(now, j) > a[i]) {
				l = now;
				break;
			}
		}
		if(l == -1) 
			dp[{i, j}] = max(dp[{i, j}], j + 1);
		else
			dp[{i, j}] = max(dp[{i, j}], j - l + solve(i, l));
	}
	else {
		int r = h;
		for (int now = i; now < h; now++) {
			if(as.get(i, now) > b[j]) {
				r = now;
				break;
			}
		}
		if(r == h) 
			dp[{i, j}] = max(dp[{i, j}], h - i);
		else
			dp[{i, j}] = max(dp[{i, j}], r - i + solve(r, j));

		int l = -1;
		for (int now = i; now >= 0; now--) {
			if(as.get(now, i) > b[j]) {
				l = now;
				break;
			}
		}
		if(l == -1) 
			dp[{i, j}] = max(dp[{i, j}], i + 1);
		else
			dp[{i, j}] = max(dp[{i, j}], i - l + solve(l, j));
	}
	return dp[{i, j}];
}


signed main() {
	#ifdef PC 
		freopen("in.txt", "r", stdin);
		freopen("out.txt", "w", stdout);
	#endif
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);

	int q;
	cin >> h >> w >> q;
	a = vector<int> (h);
	b = vector<int> (w);
	for (int i = 0; i < h; i++) {
		cin >> a[i];
	}
	for (int j = 0; j < w; j++) {
		cin >> b[j];
	}
	built_logt(w + h);
	as = *new sparse(a);
	bs = *new sparse(b);
	for (int k = 0; k < q; k++) {
		int i, j;
		cin >> i >> j;
		i--, j--;
		int ans = 1;
		for (int j1 = j + 1; j1 < w; j1++) {
			ans = max(ans, j1 - j + 1);
			if(b[j1] > a[i]) {
				ans = max(ans, j1 - j + solve(i, j1));
				break;
			}
		}
		for (int j1 = j - 1; j1 >= 0; j1--) {
			ans = max(ans, j - j1 + 1);
			if(b[j1] > a[i]) {
				ans = max(ans, j - j1 + solve(i, j1));
				break;
			}
		}


		for (int i1 = i + 1; i1 < h; i1++) {
			ans = max(ans, i1 - i + 1);
			if(a[i1] > b[j]) {
				ans = max(ans, i1 - i + solve(i1, j));
				break;
			}
		}
		for (int i1 = i - 1; i1 >= 0; i1--) {
			ans = max(ans, i - i1 + 1);
			if(a[i1] > b[j]) {
				ans = max(ans, i - i1 + solve(i1, j));
				break;
			}
		}

		cout << ans - 1 << '\n';
	}

}

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 380 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 380 KB Output is correct
8 Correct 6 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 380 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 380 KB Output is correct
8 Correct 6 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 888 KB Output is correct
13 Correct 6 ms 888 KB Output is correct
14 Correct 6 ms 888 KB Output is correct
15 Correct 6 ms 888 KB Output is correct
16 Correct 6 ms 888 KB Output is correct
17 Correct 6 ms 920 KB Output is correct
18 Correct 8 ms 1016 KB Output is correct
19 Correct 17 ms 1144 KB Output is correct
20 Correct 20 ms 1272 KB Output is correct
21 Correct 17 ms 1144 KB Output is correct
22 Correct 28 ms 1400 KB Output is correct

Subtask #3
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 380 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 380 KB Output is correct
8 Correct 6 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 888 KB Output is correct
13 Correct 6 ms 888 KB Output is correct
14 Correct 6 ms 888 KB Output is correct
15 Correct 6 ms 888 KB Output is correct
16 Correct 6 ms 888 KB Output is correct
17 Correct 6 ms 920 KB Output is correct
18 Correct 8 ms 1016 KB Output is correct
19 Correct 17 ms 1144 KB Output is correct
20 Correct 20 ms 1272 KB Output is correct
21 Correct 17 ms 1144 KB Output is correct
22 Correct 28 ms 1400 KB Output is correct
23 Correct 33 ms 15028 KB Output is correct
24 Correct 35 ms 15028 KB Output is correct
25 Correct 34 ms 15028 KB Output is correct
26 Correct 35 ms 15028 KB Output is correct
27 Correct 35 ms 15028 KB Output is correct
28 Correct 2335 ms 20236 KB Output is correct
29 Correct 480 ms 15796 KB Output is correct
30 Execution timed out 5047 ms 20280 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #4
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 1144 KB Output is correct
2 Correct 10 ms 1144 KB Output is correct
3 Correct 10 ms 1144 KB Output is correct
4 Correct 10 ms 1144 KB Output is correct
5 Correct 9 ms 1144 KB Output is correct
6 Correct 12 ms 1144 KB Output is correct
7 Correct 13 ms 1144 KB Output is correct
8 Correct 26 ms 1400 KB Output is correct
9 Correct 25 ms 1400 KB Output is correct
10 Correct 26 ms 1400 KB Output is correct
11 Correct 31 ms 1400 KB Output is correct

Subtask #5
0 / 56.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 380 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 380 KB Output is correct
8 Correct 6 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 888 KB Output is correct
13 Correct 6 ms 888 KB Output is correct
14 Correct 6 ms 888 KB Output is correct
15 Correct 6 ms 888 KB Output is correct
16 Correct 6 ms 888 KB Output is correct
17 Correct 6 ms 920 KB Output is correct
18 Correct 8 ms 1016 KB Output is correct
19 Correct 17 ms 1144 KB Output is correct
20 Correct 20 ms 1272 KB Output is correct
21 Correct 17 ms 1144 KB Output is correct
22 Correct 28 ms 1400 KB Output is correct
23 Correct 33 ms 15028 KB Output is correct
24 Correct 35 ms 15028 KB Output is correct
25 Correct 34 ms 15028 KB Output is correct
26 Correct 35 ms 15028 KB Output is correct
27 Correct 35 ms 15028 KB Output is correct
28 Correct 2335 ms 20236 KB Output is correct
29 Correct 480 ms 15796 KB Output is correct
30 Execution timed out 5047 ms 20280 KB Time limit exceeded
31 Halted 0 ms 0 KB -