oj.uz

Submission #802503

# Submission time Handle Problem Language Result Execution time Memory
802503 2023-08-02T12:36:16 Z flappybird Cultivation (JOI17_cultivation) C++17
65 / 100
 173 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] = 2e9;
			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 1 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 0 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 340 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 1 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 0 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 340 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 1 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 2 ms 852 KB Output is correct
22 Correct 3 ms 1760 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 8 ms 3280 KB Output is correct
25 Correct 5 ms 2256 KB Output is correct
26 Correct 17 ms 5580 KB Output is correct
27 Correct 18 ms 5580 KB Output is correct
28 Correct 8 ms 3280 KB Output is correct
29 Correct 17 ms 5536 KB Output is correct
30 Correct 17 ms 5580 KB Output is correct
31 Correct 17 ms 5580 KB Output is correct
32 Correct 17 ms 5528 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 1 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 0 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 340 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 1 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 2 ms 852 KB Output is correct
22 Correct 3 ms 1760 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 8 ms 3280 KB Output is correct
25 Correct 5 ms 2256 KB Output is correct
26 Correct 17 ms 5580 KB Output is correct
27 Correct 18 ms 5580 KB Output is correct
28 Correct 8 ms 3280 KB Output is correct
29 Correct 17 ms 5536 KB Output is correct
30 Correct 17 ms 5580 KB Output is correct
31 Correct 17 ms 5580 KB Output is correct
32 Correct 17 ms 5528 KB Output is correct
33 Runtime error 27 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 580 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 3 ms 468 KB Output is correct
8 Correct 2 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 4 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 468 KB Output is correct
18 Correct 2 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
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 3 ms 580 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 3 ms 468 KB Output is correct
8 Correct 2 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 4 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 468 KB Output is correct
18 Correct 2 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 1492 KB Output is correct
22 Correct 159 ms 1492 KB Output is correct
23 Correct 131 ms 1492 KB Output is correct
24 Correct 101 ms 1492 KB Output is correct
25 Correct 156 ms 1492 KB Output is correct
26 Correct 43 ms 1496 KB Output is correct
27 Correct 156 ms 1492 KB Output is correct
28 Correct 170 ms 1492 KB Output is correct
29 Correct 173 ms 1492 KB Output is correct
30 Correct 165 ms 1496 KB Output is correct
31 Correct 162 ms 1492 KB Output is correct
32 Correct 148 ms 1492 KB Output is correct
33 Correct 155 ms 1492 KB Output is correct
34 Correct 111 ms 1496 KB Output is correct
35 Correct 116 ms 1496 KB Output is correct
36 Correct 154 ms 1492 KB Output is correct

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 1 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 0 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 340 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 1 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 2 ms 852 KB Output is correct
22 Correct 3 ms 1760 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 8 ms 3280 KB Output is correct
25 Correct 5 ms 2256 KB Output is correct
26 Correct 17 ms 5580 KB Output is correct
27 Correct 18 ms 5580 KB Output is correct
28 Correct 8 ms 3280 KB Output is correct
29 Correct 17 ms 5536 KB Output is correct
30 Correct 17 ms 5580 KB Output is correct
31 Correct 17 ms 5580 KB Output is correct
32 Correct 17 ms 5528 KB Output is correct
33 Runtime error 27 ms 9800 KB Execution killed with signal 11
34 Halted 0 ms 0 KB -