oj.uz

Submission #431560

# Submission time Handle Problem Language Result Execution time Memory
431560 2021-06-17T12:59:36 Z pavement Long Mansion (JOI17_long_mansion) C++17
10 / 100
 3000 ms 18496 KB 
#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;
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
#define int long long
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ppb pop_back
#define eb emplace_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)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef double db;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef tree<iii, null_type, greater<iii>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

int N, Q, X, Y, C[500005], L[500005], R[500005], SR[500005];
vector<int> rev[500005];

bool can(int x, int l, int r) { // collecting all keys from [l, r], possible to pass thru corridor x?
	auto it = lower_bound(rev[C[x]].begin(), rev[C[x]].end(), l);
	if (it != rev[C[x]].end() && *it <= r) return 1;
	return 0;
}

ii expand(int l, int r) {
	if (l > 1 && can(l - 1, l, r)) return expand(l - 1, r);
	if (r < N && can(r, l, r)) return expand(l, r + 1);
	return mp(l, r);
}

main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> N;
	for (int i = 1; i < N; i++) cin >> C[i];
	for (int i = 1, B; i <= N; i++) {
		cin >> B;
		for (int j = 0, tmp; j < B; j++) {
			cin >> tmp;
			rev[tmp].pb(i);
		}
	}
	for (int i = 1; i <= N; i++) sort(rev[i].begin(), rev[i].end());
	for (int i = N; i >= 1; i--)
		if (i < N && can(i, i, i)) {
			SR[i] = i;
			while (SR[i] < N && can(SR[i], i, SR[i])) SR[i] = SR[SR[i] + 1];
		} else SR[i] = i;
	for (int i = 1; i <= N; i++) {
		if (i > 1 && can(i - 1, i, SR[i])) {
			L[i] = L[i - 1];
			R[i] = max(R[i - 1], SR[i]);
		} else {
			L[i] = i;
			R[i] = SR[i];
		}
		tie(L[i], R[i]) = expand(L[i], R[i]);
	}
	cin >> Q;
	while (Q--) {
		cin >> X >> Y;
		cout << (L[X] <= Y && Y <= R[X] ? "YES" : "NO") << '\n';
	}
}

Compilation message

long_mansion.cpp:43:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   43 | main() {
      | ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12220 KB Output is correct
2 Correct 52 ms 12232 KB Output is correct
3 Correct 164 ms 12368 KB Output is correct
4 Correct 10 ms 12108 KB Output is correct
5 Correct 11 ms 12236 KB Output is correct
6 Correct 12 ms 12224 KB Output is correct
7 Correct 11 ms 12152 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12220 KB Output is correct
2 Correct 52 ms 12232 KB Output is correct
3 Correct 164 ms 12368 KB Output is correct
4 Correct 10 ms 12108 KB Output is correct
5 Correct 11 ms 12236 KB Output is correct
6 Correct 12 ms 12224 KB Output is correct
7 Correct 11 ms 12152 KB Output is correct
8 Correct 162 ms 13728 KB Output is correct
9 Correct 158 ms 13680 KB Output is correct
10 Correct 211 ms 13904 KB Output is correct
11 Correct 303 ms 14056 KB Output is correct
12 Correct 136 ms 13800 KB Output is correct
13 Correct 134 ms 13916 KB Output is correct
14 Correct 139 ms 13816 KB Output is correct
15 Correct 143 ms 13984 KB Output is correct
16 Correct 127 ms 14212 KB Output is correct
17 Correct 134 ms 13868 KB Output is correct
18 Correct 148 ms 13848 KB Output is correct
19 Correct 138 ms 13916 KB Output is correct
20 Correct 163 ms 14048 KB Output is correct
21 Correct 140 ms 14160 KB Output is correct
22 Correct 153 ms 14064 KB Output is correct
23 Correct 156 ms 13800 KB Output is correct
24 Correct 157 ms 13764 KB Output is correct
25 Correct 161 ms 13796 KB Output is correct
26 Correct 143 ms 13676 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3082 ms 18496 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12220 KB Output is correct
2 Correct 52 ms 12232 KB Output is correct
3 Correct 164 ms 12368 KB Output is correct
4 Correct 10 ms 12108 KB Output is correct
5 Correct 11 ms 12236 KB Output is correct
6 Correct 12 ms 12224 KB Output is correct
7 Correct 11 ms 12152 KB Output is correct
8 Correct 162 ms 13728 KB Output is correct
9 Correct 158 ms 13680 KB Output is correct
10 Correct 211 ms 13904 KB Output is correct
11 Correct 303 ms 14056 KB Output is correct
12 Correct 136 ms 13800 KB Output is correct
13 Correct 134 ms 13916 KB Output is correct
14 Correct 139 ms 13816 KB Output is correct
15 Correct 143 ms 13984 KB Output is correct
16 Correct 127 ms 14212 KB Output is correct
17 Correct 134 ms 13868 KB Output is correct
18 Correct 148 ms 13848 KB Output is correct
19 Correct 138 ms 13916 KB Output is correct
20 Correct 163 ms 14048 KB Output is correct
21 Correct 140 ms 14160 KB Output is correct
22 Correct 153 ms 14064 KB Output is correct
23 Correct 156 ms 13800 KB Output is correct
24 Correct 157 ms 13764 KB Output is correct
25 Correct 161 ms 13796 KB Output is correct
26 Correct 143 ms 13676 KB Output is correct
27 Execution timed out 3082 ms 18496 KB Time limit exceeded
28 Halted 0 ms 0 KB -