oj.uz

Submission #802548

# Submission time Handle Problem Language Result Execution time Memory
802548 2023-08-02T12:43:52 Z flappybird Cultivation (JOI17_cultivation) C++17
65 / 100
 169 ms 9792 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<ll, ll> pii;
#define MAX 330
#define MAXS 20
#define INF 20000000000020
#define bb ' '
#define ln '\n'
#define Ln '\n'
#define MOD 1000000007
ll H, W;
ll N;
pll arr[MAX];
ll ans = INF;
ll 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;
	ll 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());
	ll 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++) {
		ll 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]++;
	}
	ll 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;
	ll 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: 'll' {aka 'long long 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 328 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 2 ms 1108 KB Output is correct
19 Correct 1 ms 584 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 852 KB Output is correct
22 Correct 4 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 6 ms 2256 KB Output is correct
26 Correct 18 ms 5488 KB Output is correct
27 Correct 19 ms 5580 KB Output is correct
28 Correct 9 ms 3272 KB Output is correct
29 Correct 18 ms 5580 KB Output is correct
30 Correct 19 ms 5572 KB Output is correct
31 Correct 17 ms 5580 KB Output is correct
32 Correct 17 ms 5560 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 2 ms 1108 KB Output is correct
19 Correct 1 ms 584 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 852 KB Output is correct
22 Correct 4 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 6 ms 2256 KB Output is correct
26 Correct 18 ms 5488 KB Output is correct
27 Correct 19 ms 5580 KB Output is correct
28 Correct 9 ms 3272 KB Output is correct
29 Correct 18 ms 5580 KB Output is correct
30 Correct 19 ms 5572 KB Output is correct
31 Correct 17 ms 5580 KB Output is correct
32 Correct 17 ms 5560 KB Output is correct
33 Runtime error 24 ms 9792 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 4 ms 468 KB Output is correct
4 Correct 3 ms 584 KB Output is correct
5 Correct 4 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 4 ms 468 KB Output is correct
12 Correct 3 ms 580 KB Output is correct
13 Correct 1 ms 584 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 3 ms 584 KB Output is correct
17 Correct 3 ms 468 KB Output is correct
18 Correct 3 ms 468 KB Output is correct
19 Correct 3 ms 592 KB Output is correct
20 Correct 3 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 468 KB Output is correct
3 Correct 4 ms 468 KB Output is correct
4 Correct 3 ms 584 KB Output is correct
5 Correct 4 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 4 ms 468 KB Output is correct
12 Correct 3 ms 580 KB Output is correct
13 Correct 1 ms 584 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 3 ms 584 KB Output is correct
17 Correct 3 ms 468 KB Output is correct
18 Correct 3 ms 468 KB Output is correct
19 Correct 3 ms 592 KB Output is correct
20 Correct 3 ms 468 KB Output is correct
21 Correct 104 ms 1512 KB Output is correct
22 Correct 169 ms 1504 KB Output is correct
23 Correct 107 ms 1492 KB Output is correct
24 Correct 114 ms 1488 KB Output is correct
25 Correct 160 ms 1492 KB Output is correct
26 Correct 47 ms 1492 KB Output is correct
27 Correct 157 ms 1492 KB Output is correct
28 Correct 157 ms 1500 KB Output is correct
29 Correct 166 ms 1500 KB Output is correct
30 Correct 159 ms 1492 KB Output is correct
31 Correct 167 ms 1484 KB Output is correct
32 Correct 152 ms 1492 KB Output is correct
33 Correct 156 ms 1504 KB Output is correct
34 Correct 113 ms 1504 KB Output is correct
35 Correct 107 ms 1512 KB Output is correct
36 Correct 162 ms 1492 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 2 ms 1108 KB Output is correct
19 Correct 1 ms 584 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 852 KB Output is correct
22 Correct 4 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 6 ms 2256 KB Output is correct
26 Correct 18 ms 5488 KB Output is correct
27 Correct 19 ms 5580 KB Output is correct
28 Correct 9 ms 3272 KB Output is correct
29 Correct 18 ms 5580 KB Output is correct
30 Correct 19 ms 5572 KB Output is correct
31 Correct 17 ms 5580 KB Output is correct
32 Correct 17 ms 5560 KB Output is correct
33 Runtime error 24 ms 9792 KB Execution killed with signal 11
34 Halted 0 ms 0 KB -