oj.uz

Submission #802513

# Submission time Handle Problem Language Result Execution time Memory
802513 2023-08-02T12:37:58 Z flappybird Cultivation (JOI17_cultivation) C++17
45 / 100
 170 ms 9800 KB 
#include <bits/stdc++.h>
#include <cassert>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx,avx2,fma")
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
#define MAX 330
#define MAXS 20
#define INF 2000000000000020
#define bb ' '
#define ln '\n'
#define Ln '\n'
#define MOD 1000000007
ll H, W;
int N;
pll arr[MAX];
ll ans = 2e9;
int st[MAX], en[MAX];
ll U[MAX], D[MAX], UD[MAX];
ll A[MAX][MAX], B[MAX][MAX], C[MAX][MAX];
deque<pii> up, down, su;
bool test(ll d) {
	if (d <= 0) return false;
	vector<ll> ys;
	int i, j;
	for (i = 1; i <= N; i++) ys.push_back(arr[i].second), ys.push_back(arr[i].second + d);
	sort(ys.begin(), ys.end());
	ys.erase(unique(ys.begin(), ys.end()), ys.end());
	int X = ys.size();
	for (i = 0; i < X; i++) U[i] = D[i] = UD[i] = 0, st[i] = en[i] = 0;
	for (i = 1; i <= N; i++) {
		int l, r;
		l = lower_bound(ys.begin(), ys.end(), arr[i].second) - ys.begin();
		r = lower_bound(ys.begin(), ys.end(), arr[i].second + d) - ys.begin();
		st[l]++;
		en[r]++;
	}
	int il, ir;
	il = ir = 0;
	for (i = 0; i < X; i++) {
		ir += st[i];
		il += en[i];
		if (il == ir) {
			UD[i] = INF;
			continue;
		}
		U[i] = A[il + 1][ir];
		D[i] = B[il + 1][ir];
		UD[i] = C[il + 1][ir];
	}
	up.clear();
	down.clear();
	su.clear();
	ll mn = INF;
	j = 0;
	for (i = 0; i < X - 1; i++) {
		while (up.size() && up.back().first <= U[i]) up.pop_back();
		up.emplace_back(U[i], i);
		while (down.size() && down.back().first <= D[i]) down.pop_back();
		down.emplace_back(D[i], i);
		while (su.size() && su.back().first <= UD[i]) su.pop_back();
		su.emplace_back(UD[i], i);
		while (j + 1 <= i && ys[i + 1] - ys[j + 1] >= W) j++;
		while (up.size() && up.front().second < j) up.pop_front();
		while (down.size() && down.front().second < j) down.pop_front();
		while (su.size() && su.front().second < j) su.pop_front();
		if (ys[i + 1] - ys[j] >= W) mn = min(mn, max(0ll + up.front().first + down.front().first, (ll)su.front().first));
	}
	if (mn >= INF) return false;
	ans = min(ans, mn + d - 1);
	return true;
}
signed main() {
	ios::sync_with_stdio(false), cin.tie(0);
	cin >> H >> W >> N;
	int i, j, k;
	vector<ll> ls;
	ls.push_back(W);
	for (i = 1; i <= N; i++) cin >> arr[i].first >> arr[i].second;
	for (i = 1; i <= N; i++) {
		for (j = i + 1; j <= N; j++) ls.push_back(abs(arr[j].second - arr[i].second));
		for (j = i + 1; j <= N; j++) ls.push_back(abs(arr[j].second - arr[i].second) + W);
		ls.push_back(arr[i].second);
		ls.push_back(W - arr[i].second + 1);
	}
	sort(arr + 1, arr + N + 1, [&](pii p1, pii p2) {return p1.second < p2.second; });

	for (i = 1; i <= N; i++) {
		vector<ll> v;
		A[i][i] = arr[i].first - 1;
		B[i][i] = H - arr[i].first;
		v.push_back(arr[i].first);
		for (j = i + 1; j <= N; j++) {
			v.insert(lower_bound(v.begin(), v.end(), arr[j].first), arr[j].first);
			for (k = 0; k + 1 < v.size(); k++) C[i][j] = max(C[i][j], v[k + 1] - v[k] - 1);
			A[i][j] = v[0] - 1;
			B[i][j] = H - v.back();
		}
	}
	vector<ll> cpy;
	for (auto v : ls) cpy.push_back(W - v);
	for (auto v : cpy) ls.push_back(v);
	sort(ls.begin(), ls.end());
	ls.erase(unique(ls.begin(), ls.end()), ls.end());
	reverse(ls.begin(), ls.end());
	for (auto v : ls) if (!test(v)) break;
	cout << ans << ln;
}

Compilation message

cultivation.cpp: In function 'int main()':
cultivation.cpp:99:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |    for (k = 0; k + 1 < v.size(); k++) C[i][j] = max(C[i][j], v[k + 1] - v[k] - 1);
      |                ~~~~~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 352 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 352 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 1 ms 1108 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 852 KB Output is correct
22 Correct 3 ms 1748 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 9 ms 3280 KB Output is correct
25 Correct 5 ms 2256 KB Output is correct
26 Correct 17 ms 5508 KB Output is correct
27 Correct 21 ms 5600 KB Output is correct
28 Correct 8 ms 3280 KB Output is correct
29 Correct 17 ms 5580 KB Output is correct
30 Correct 19 ms 5580 KB Output is correct
31 Correct 17 ms 5580 KB Output is correct
32 Correct 17 ms 5516 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 352 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 1 ms 1108 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 852 KB Output is correct
22 Correct 3 ms 1748 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 9 ms 3280 KB Output is correct
25 Correct 5 ms 2256 KB Output is correct
26 Correct 17 ms 5508 KB Output is correct
27 Correct 21 ms 5600 KB Output is correct
28 Correct 8 ms 3280 KB Output is correct
29 Correct 17 ms 5580 KB Output is correct
30 Correct 19 ms 5580 KB Output is correct
31 Correct 17 ms 5580 KB Output is correct
32 Correct 17 ms 5516 KB Output is correct
33 Runtime error 25 ms 9800 KB Execution killed with signal 11
34 Halted 0 ms 0 KB -

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 3 ms 468 KB Output is correct
3 Correct 3 ms 468 KB Output is correct
4 Correct 3 ms 468 KB Output is correct
5 Correct 3 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 2 ms 468 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 3 ms 468 KB Output is correct
11 Correct 3 ms 468 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 3 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 3 ms 468 KB Output is correct
17 Correct 3 ms 580 KB Output is correct
18 Correct 3 ms 468 KB Output is correct
19 Correct 3 ms 468 KB Output is correct
20 Correct 2 ms 468 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 3 ms 468 KB Output is correct
3 Correct 3 ms 468 KB Output is correct
4 Correct 3 ms 468 KB Output is correct
5 Correct 3 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 2 ms 468 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 3 ms 468 KB Output is correct
11 Correct 3 ms 468 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 3 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 3 ms 468 KB Output is correct
17 Correct 3 ms 580 KB Output is correct
18 Correct 3 ms 468 KB Output is correct
19 Correct 3 ms 468 KB Output is correct
20 Correct 2 ms 468 KB Output is correct
21 Correct 97 ms 1588 KB Output is correct
22 Correct 170 ms 1616 KB Output is correct
23 Incorrect 130 ms 1492 KB Output isn't correct
24 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 352 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 1 ms 1108 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 852 KB Output is correct
22 Correct 3 ms 1748 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 9 ms 3280 KB Output is correct
25 Correct 5 ms 2256 KB Output is correct
26 Correct 17 ms 5508 KB Output is correct
27 Correct 21 ms 5600 KB Output is correct
28 Correct 8 ms 3280 KB Output is correct
29 Correct 17 ms 5580 KB Output is correct
30 Correct 19 ms 5580 KB Output is correct
31 Correct 17 ms 5580 KB Output is correct
32 Correct 17 ms 5516 KB Output is correct
33 Runtime error 25 ms 9800 KB Execution killed with signal 11
34 Halted 0 ms 0 KB -