oj.uz

답안 #591829

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
591829 2022-07-08T01:09:19 Z Temmie 늑대인간 (IOI18_werewolf) C++17
49 / 100
 4000 ms 63664 KB 
#include "werewolf.h"
#include <bits/stdc++.h>

struct Dsu {
	
	std::vector <int> p;
	
	Dsu(int size) {
		p.resize(size);
		std::iota(p.begin(), p.end(), 0);
	}
	
	inline int find(int v) {
		return v == p[v] ? v : (p[v] = find(p[v]));
	}
	
	inline void unite(int u, int v) {
		p[find(u)] = find(v);
	}
	
};

struct Sparse {
	
	std::vector <std::vector <int>> bin;
	
	std::function <int (int, int)> cmp;
	
	Sparse(const std::vector <int>& v, const std::function <int (int, int)>& _cmp) {
		cmp = _cmp;
		bin.resize(20, std::vector <int> (v.size()));
		bin[0] = v;
		for (int b = 1; b < 20; b++) {
			for (int i = 0; i < (int) v.size() - (1 << b) + 1; i++) {
				bin[b][i] = cmp(bin[b - 1][i], bin[b - 1][i + (1 << (b - 1))]);
			}
		}
	}
	
	int query(int l, int r) {
		if (l > r) {
			std::swap(l, r);
		}
		int d = r - l + 1;
		int b = 0;
		while (d) {
			b++;
			d >>= 1;
		}
		b--;
		return cmp(bin[b][l], bin[b][r - (1 << b) + 1]);
	}
	
};

std::vector <int> check_validity(int n, std::vector <int> u, std::vector <int> v,
std::vector <int> s, std::vector <int> e, std::vector <int> l, std::vector <int> r) {
	int m = u.size();
	int q = s.size();
	std::vector <std::vector <int>> g(n);
	std::vector <int> deg(n, 0);
	bool sub3 = n - 1 == m;
	for (int i = 0; i < m; i++) {
		g[u[i]].push_back(v[i]);
		g[v[i]].push_back(u[i]);
		sub3 &= ++deg[u[i]] <= 2;
		sub3 &= ++deg[v[i]] <= 2;
	}
	if (sub3) {
		std::vector <int> vals;
		std::vector <int> ptrs(n);
		std::queue <int> qq;
		for (int i = 0; i < n; i++) {
		//for (int i = n - 1; i >= 0; i--) {
			if (deg[i] == 1) {
				qq.push(i);
				break;
			}
		}
		std::vector <bool> vis(n, false);
		while (qq.size()) {
			int node = qq.front(); qq.pop();
			if (vis[node]) {
				continue;
			}
			vis[node] = true;
			ptrs[node] = vals.size();
			vals.push_back(node);
			for (int x : g[node]) {
				qq.push(x);
			}
		}
		assert(vals.size() == ptrs.size());
		Sparse sparse_mn(vals, [] (int x, int y) -> int { return std::min(x, y); });
		Sparse sparse_mx(vals, [] (int x, int y) -> int { return std::max(x, y); });
		std::vector <int> ans(q, 0);
		for (int i = 0; i < q; i++) {
			int le = std::min(ptrs[s[i]], ptrs[e[i]]);
			int ri = le ^ ptrs[s[i]] ^ ptrs[e[i]];
			int ll = le, rr = ri;
			bool yes = false;
			while (ll <= rr) {
				int mid = (ll + rr) >> 1;
				bool lok = sparse_mn.query(mid, ptrs[s[i]]) >= l[i];
				bool rok = sparse_mx.query(mid, ptrs[e[i]]) <= r[i];
				if (lok & rok) {
					yes = true;
					break;
				}
				if (!lok) {
					if (le == ptrs[s[i]]) {
						rr = mid - 1;
					} else {
						ll = mid + 1;
					}
				} else {
					if (le == ptrs[s[i]]) {
						ll = mid + 1;
					} else {
						rr = mid - 1;
					}
				}
			}
			ans[i] = yes;
		}
		return ans;
	}
	std::vector <int> ans(q, 0);
	for (int i = 0; i < q; i++) {
		Dsu dsu_l(n);
		Dsu dsu_r(n);
		for (int j = l[i]; j < n; j++) {
			for (int x : g[j]) {
				if (x >= l[i]) {
					dsu_l.unite(j, x);
				}
			}
		}
		for (int j = 0; j <= r[i]; j++) {
			for (int x : g[j]) {
				if (x <= r[i]) {
					dsu_r.unite(j, x);
				}
			}
		}
		for (int j = l[i]; j <= r[i]; j++) {
			if (dsu_l.find(s[i]) == dsu_l.find(j) && dsu_r.find(e[i]) == dsu_r.find(j)) {
				ans[i] = 1;
				break;
			}
		}
	}
	return ans;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 711 ms 644 KB Output is correct
11 Correct 623 ms 644 KB Output is correct
12 Correct 4 ms 1108 KB Output is correct
13 Correct 835 ms 636 KB Output is correct
14 Correct 725 ms 636 KB Output is correct
15 Correct 1477 ms 724 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 585 ms 55996 KB Output is correct
2 Correct 279 ms 63576 KB Output is correct
3 Correct 296 ms 63664 KB Output is correct
4 Correct 379 ms 63616 KB Output is correct
5 Correct 432 ms 63584 KB Output is correct
6 Correct 565 ms 63664 KB Output is correct
7 Correct 486 ms 63592 KB Output is correct
8 Correct 269 ms 63576 KB Output is correct
9 Correct 300 ms 63592 KB Output is correct
10 Correct 285 ms 63596 KB Output is correct
11 Correct 328 ms 63584 KB Output is correct
12 Correct 350 ms 63588 KB Output is correct
13 Correct 355 ms 63592 KB Output is correct
14 Correct 343 ms 63612 KB Output is correct
15 Correct 393 ms 63608 KB Output is correct
16 Correct 344 ms 63584 KB Output is correct
17 Correct 478 ms 63592 KB Output is correct

Subtask #4
0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 711 ms 644 KB Output is correct
11 Correct 623 ms 644 KB Output is correct
12 Correct 4 ms 1108 KB Output is correct
13 Correct 835 ms 636 KB Output is correct
14 Correct 725 ms 636 KB Output is correct
15 Correct 1477 ms 724 KB Output is correct
16 Correct 585 ms 55996 KB Output is correct
17 Correct 279 ms 63576 KB Output is correct
18 Correct 296 ms 63664 KB Output is correct
19 Correct 379 ms 63616 KB Output is correct
20 Correct 432 ms 63584 KB Output is correct
21 Correct 565 ms 63664 KB Output is correct
22 Correct 486 ms 63592 KB Output is correct
23 Correct 269 ms 63576 KB Output is correct
24 Correct 300 ms 63592 KB Output is correct
25 Correct 285 ms 63596 KB Output is correct
26 Correct 328 ms 63584 KB Output is correct
27 Correct 350 ms 63588 KB Output is correct
28 Correct 355 ms 63592 KB Output is correct
29 Correct 343 ms 63612 KB Output is correct
30 Correct 393 ms 63608 KB Output is correct
31 Correct 344 ms 63584 KB Output is correct
32 Correct 478 ms 63592 KB Output is correct
33 Execution timed out 4049 ms 32784 KB Time limit exceeded
34 Halted 0 ms 0 KB -