oj.uz

Submission #820562

# Submission time Handle Problem Language Result Execution time Memory
820562 2023-08-11T04:46:16 Z pavement Werewolf (IOI18_werewolf) C++17
100 / 100
 1403 ms 287928 KB 
#include "werewolf.h"
#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define g0(a) get<0>(a)
#define g1(a) get<1>(a)
#define g2(a) get<2>(a)
#define g3(a) get<3>(a)
#define mt make_tuple

using iii = tuple<int, int, int>;

int hpos, wpos, to[200005], link[200005], sz[200005], rep[200005], ancH[600005][25], ancW[600005][25], depH[600005], depW[600005], stH[600005], edH[600005], stW[600005], edW[600005];
vector<int> hadj[600005], wadj[600005];
iii human[400005], wolf[400005];

int find(int x) {
	if (x == link[x]) return x;
	return link[x] = find(link[x]);
}

void unite(int a, int b) {
	a = find(a);
	b = find(b);
	if (a == b) return;
	if (sz[b] > sz[a]) swap(a, b);
	sz[a] += sz[b];
	link[b] = a;
}

void dfsH(int n, int e = -1) {
	ancH[n][0] = e;
	for (int i = 1; i <= 20; i++)
		if (ancH[n][i - 1] != -1)
			ancH[n][i] = ancH[ancH[n][i - 1]][i - 1];
	int minst = 1e9, maxed = -1e9;
	for (auto u : hadj[n])
		if (u != e) {
			depH[u] = depH[n] + 1;
			dfsH(u, n);
			minst = min(minst, stH[u]);
			maxed = max(maxed, edH[u]);
		}
	stH[n] = minst;
	edH[n] = maxed;
	if (hadj[n].empty())
		stH[n] = edH[n] = hpos++;
}

void dfsW(int n, int e = -1) {
	ancW[n][0] = e;
	for (int i = 1; i <= 20; i++)
		if (ancW[n][i - 1] != -1)
			ancW[n][i] = ancW[ancW[n][i - 1]][i - 1];
	int minst = 1e9, maxed = -1e9;
	for (auto u : wadj[n])
		if (u != e) {
			depW[u] = depW[n] + 1;
			dfsW(u, n);
			minst = min(minst, stW[u]);
			maxed = max(maxed, edW[u]);
		}
	stW[n] = minst;
	edW[n] = maxed;
	if (wadj[n].empty())
		stW[n] = edW[n] = wpos++;
}

struct node {
	node *left, *right;
	int S, E;
	vector<int> val;
	node(int _s, int _e) : S(_s), E(_e) {
		if (S == E) {
			val.pb(to[S]);
			return;
		}
		int M = (S + E) >> 1;
		left = new node(S, M);
		right = new node(M + 1, E);
		merge(left->val.begin(), left->val.end(), right->val.begin(), right->val.end(), back_inserter(val));
	}
	bool qry(int l, int r, int l2, int r2) {
		if (l > E || r < S) return 0;
		if (l <= S && E <= r) {
			auto it = lower_bound(val.begin(), val.end(), l2);
			if (it == val.end() || *it > r2) return 0;
			return 1;
		}
		return left->qry(l, r, l2, r2) || right->qry(l, r, l2, r2);
	}
} *root;

vector<int> check_validity(int N, vector<int> X, vector<int> Y, vector<int> S, vector<int> E, vector<int> L, vector<int> R) {
	memset(ancH, -1, sizeof ancH);
	memset(ancW, -1, sizeof ancW);
	int M = X.size();
	for (int i = 0; i < N; i++) {
		link[i] = rep[i] = i;
		sz[i] = 1;
	}
	for (int i = 0; i < M; i++) {
		human[i] = mt(min(X[i], Y[i]), X[i], Y[i]);
		wolf[i] = mt(max(X[i], Y[i]), X[i], Y[i]);
	}
	sort(human, human + X.size(), greater<iii>());
	sort(wolf, wolf + X.size());
	for (int i = 0; i < M; i++) {
		auto [w, u, v] = human[i];
		int a = rep[find(u)], b = rep[find(v)];
		if (a != b) {
			hadj[N + i].pb(a);
			hadj[N + i].pb(b);
		} else {
			hadj[N + i].pb(a);
		}
		unite(u, v);
		rep[find(u)] = N + i;
	}
	for (int i = 0; i < N; i++) {
		link[i] = rep[i] = i;
		sz[i] = 1;
	}
	for (int i = 0; i < M; i++) {
		auto [w, u, v] = wolf[i];
		int a = rep[find(u)], b = rep[find(v)];
		if (a != b) {
			wadj[N + i].pb(a);
			wadj[N + i].pb(b);
		} else {
			wadj[N + i].pb(a);
		}
		unite(u, v);
		rep[find(u)] = N + i;
	}
	dfsH(N + M - 1);
	dfsW(N + M - 1);
	for (int i = 0; i < N; i++)
		to[stH[i]] = stW[i];
	root = new node(0, N - 1);
	int Q = S.size();
	vector<int> A;
	for (int i = 0; i < Q; i++) {
		for (int j = 20; j >= 0; j--)
			if (ancH[S[i]][j] != -1 && g0(human[ancH[S[i]][j] - N]) >= L[i]) S[i] = ancH[S[i]][j];
		for (int j = 20; j >= 0; j--)
			if (ancW[E[i]][j] != -1 && g0(wolf[ancW[E[i]][j] - N]) <= R[i]) E[i] = ancW[E[i]][j];
		A.pb(root->qry(stH[S[i]], edH[S[i]], stW[E[i]], edW[E[i]]));
	}
	return A;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 145980 KB Output is correct
2 Correct 50 ms 145888 KB Output is correct
3 Correct 58 ms 145984 KB Output is correct
4 Correct 50 ms 145868 KB Output is correct
5 Correct 50 ms 145992 KB Output is correct
6 Correct 53 ms 145984 KB Output is correct
7 Correct 57 ms 145888 KB Output is correct
8 Correct 49 ms 145980 KB Output is correct
9 Correct 50 ms 145948 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 145980 KB Output is correct
2 Correct 50 ms 145888 KB Output is correct
3 Correct 58 ms 145984 KB Output is correct
4 Correct 50 ms 145868 KB Output is correct
5 Correct 50 ms 145992 KB Output is correct
6 Correct 53 ms 145984 KB Output is correct
7 Correct 57 ms 145888 KB Output is correct
8 Correct 49 ms 145980 KB Output is correct
9 Correct 50 ms 145948 KB Output is correct
10 Correct 58 ms 147560 KB Output is correct
11 Correct 56 ms 147396 KB Output is correct
12 Correct 56 ms 147404 KB Output is correct
13 Correct 57 ms 147708 KB Output is correct
14 Correct 56 ms 147616 KB Output is correct
15 Correct 57 ms 147884 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 866 ms 246932 KB Output is correct
2 Correct 804 ms 257992 KB Output is correct
3 Correct 658 ms 250912 KB Output is correct
4 Correct 665 ms 247772 KB Output is correct
5 Correct 712 ms 247512 KB Output is correct
6 Correct 799 ms 247240 KB Output is correct
7 Correct 724 ms 247144 KB Output is correct
8 Correct 825 ms 257876 KB Output is correct
9 Correct 503 ms 250836 KB Output is correct
10 Correct 536 ms 247656 KB Output is correct
11 Correct 542 ms 247516 KB Output is correct
12 Correct 531 ms 247372 KB Output is correct
13 Correct 1149 ms 257956 KB Output is correct
14 Correct 1135 ms 257976 KB Output is correct
15 Correct 1246 ms 258016 KB Output is correct
16 Correct 1242 ms 257952 KB Output is correct
17 Correct 784 ms 246948 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 145980 KB Output is correct
2 Correct 50 ms 145888 KB Output is correct
3 Correct 58 ms 145984 KB Output is correct
4 Correct 50 ms 145868 KB Output is correct
5 Correct 50 ms 145992 KB Output is correct
6 Correct 53 ms 145984 KB Output is correct
7 Correct 57 ms 145888 KB Output is correct
8 Correct 49 ms 145980 KB Output is correct
9 Correct 50 ms 145948 KB Output is correct
10 Correct 58 ms 147560 KB Output is correct
11 Correct 56 ms 147396 KB Output is correct
12 Correct 56 ms 147404 KB Output is correct
13 Correct 57 ms 147708 KB Output is correct
14 Correct 56 ms 147616 KB Output is correct
15 Correct 57 ms 147884 KB Output is correct
16 Correct 866 ms 246932 KB Output is correct
17 Correct 804 ms 257992 KB Output is correct
18 Correct 658 ms 250912 KB Output is correct
19 Correct 665 ms 247772 KB Output is correct
20 Correct 712 ms 247512 KB Output is correct
21 Correct 799 ms 247240 KB Output is correct
22 Correct 724 ms 247144 KB Output is correct
23 Correct 825 ms 257876 KB Output is correct
24 Correct 503 ms 250836 KB Output is correct
25 Correct 536 ms 247656 KB Output is correct
26 Correct 542 ms 247516 KB Output is correct
27 Correct 531 ms 247372 KB Output is correct
28 Correct 1149 ms 257956 KB Output is correct
29 Correct 1135 ms 257976 KB Output is correct
30 Correct 1246 ms 258016 KB Output is correct
31 Correct 1242 ms 257952 KB Output is correct
32 Correct 784 ms 246948 KB Output is correct
33 Correct 1006 ms 249748 KB Output is correct
34 Correct 965 ms 259208 KB Output is correct
35 Correct 1247 ms 260964 KB Output is correct
36 Correct 1069 ms 249740 KB Output is correct
37 Correct 1232 ms 257308 KB Output is correct
38 Correct 1060 ms 252404 KB Output is correct
39 Correct 935 ms 269124 KB Output is correct
40 Correct 1403 ms 287928 KB Output is correct
41 Correct 878 ms 254728 KB Output is correct
42 Correct 723 ms 249780 KB Output is correct
43 Correct 1187 ms 283764 KB Output is correct
44 Correct 1090 ms 257248 KB Output is correct
45 Correct 708 ms 271644 KB Output is correct
46 Correct 688 ms 269088 KB Output is correct
47 Correct 1297 ms 259024 KB Output is correct
48 Correct 1319 ms 258044 KB Output is correct
49 Correct 1371 ms 259000 KB Output is correct
50 Correct 1240 ms 258008 KB Output is correct
51 Correct 1091 ms 286880 KB Output is correct
52 Correct 1084 ms 286612 KB Output is correct