Submission #1000598

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1000598	2024-06-17T23:04:39 Z	Tob	Cultivation (JOI17_cultivation)	C++14	30 / 100	17 ms	2780 KB

cultivation

#include <bits/stdc++.h>

#pragma optimize("O3, unroll-loops")

#define F first
#define S second
#define all(x) x.begin(), x.end()
#define pb push_back
#define FIO ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)

using namespace std;

typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;

const int N = 307, inf = 2e9;

int n, m, k;
int a[N], b[N];
int mem[2*N][N];
pii gr[2*N][N];
vector <int> add[2*N], rem[2*N];

struct MQ {
	queue <ll> q; deque <ll> dq;
	inline void push(ll x) {q.push(x); while (!dq.empty() && dq.back() < x) dq.pop_back(); dq.pb(x);}
	inline void pop() {ll x = q.front(); q.pop(); if (dq[0] == x) dq.pop_front();}
	inline ll get() {return dq[0];}
};

int main () {
	FIO;
	cin >> n >> m >> k;
	
	vector <pii> so;
	for (int i = 0; i < k; i++) {
		cin >> a[i] >> b[i];
		a[i]--; b[i]--;
		so.pb({a[i], b[i]});
	}
	sort(all(so));
	for (int i = 0; i < k; i++) a[i] = so[i].F, b[i] = so[i].S;
	
	int d = a[0]; for (int i = 0; i < k; i++) a[i] -= d;
	d = n-a[k-1]-1; for (int i = 1; i < k; i++) d = max(d, a[i]-a[i-1]-1);
	a[k] = n-1;
	vector <ll> v; v.pb(d);
	for (int i = 0; i <= k; i++) {
		for (int j = i; j <= k; j++) {
			if (a[j]-a[i] >= d) v.pb(a[j]-a[i]);
			if (a[j]-a[i]-1 >= d) v.pb(a[j]-a[i]-1);
			if (a[j]+n-a[i]-1 >= d) v.pb(a[j]+n-a[i]-1);
		}
		if (n-a[i]-1 >= d) v.pb(n-a[i]-1);
	}
	sort(all(v)); v.erase(unique(all(v)), v.end());
	
	//PRECOMPUTE -> O(N^2 log N)
	for (int i = 0; i < k; i++) {
		set <int> s;
		multiset <int> rj;
		rj.insert(0);
		for (int j = i; j >= 0; j--) {
			mem[i][j] = mem[i][j+1];
			gr[i][j].F = gr[i][j+1].F;
			gr[i][j].S = gr[i][j+1].S;
			if (s.find(b[j]) != s.end()) continue;
			auto p1 = s.lower_bound(b[j]);
			if (p1 == s.end()) {
				if (!s.empty()) rj.insert(b[j]-*(--p1)-1);
				s.insert(b[j]);
				gr[i][j] = {*s.begin(), m-*s.rbegin()-1};
			}
			else if (p1 == s.begin()) {
				rj.insert(*p1-b[j]-1);
				s.insert(b[j]);
				gr[i][j] = {*s.begin(), m-*s.rbegin()-1};
			}
			else {
				int x = *p1; --p1; int y = *p1;
				rj.erase(rj.find(x-y-1));
				rj.insert(x-b[j]-1);
				rj.insert(b[j]-y-1);
				s.insert(b[j]);
			}
			mem[i][j] = *rj.rbegin();
		}
	}
	
	//SOLVE O(N^3)
	ll mn = inf;
	for (auto x : v) {
		MQ m1, m2, m3;
		vector <pair <pii, ll> > vv;
		int z = 0;
		
		for (int i = 0; i < k; i++) {
			while (a[z]+x < a[i]) {
				if (vv.back().S != (ll)a[z]+x+1) vv.pb({{0, 1}, (ll)a[z]+x+1});
				else vv[vv.size()-1].F.S++;
				z++;
			}
			if (vv.empty() || vv.back().S != a[i]) vv.pb({{1, 0}, a[i]});
			else vv[vv.size()-1].F.F++;
		}
		while (z < k) {
			if (vv.back().S != (ll)a[z]+x+1) vv.pb({{0, 1}, (ll)a[z]+x+1});
			else vv[vv.size()-1].F.S++;
			z++;
		}
		
		int l = 0, r = -1; z = 0;
		const ll oo = 1e18;
		#define C (x+max(m1.get(), m2.get()+m3.get()))
		
		for (int i = 0; i+1 < vv.size(); i++) {
			l += vv[i].F.S;
			r += vv[i].F.F;
			m1.push(mem[r][l]); m2.push(gr[r][l].F); m3.push(gr[r][l].S);
			while (vv[z].S+n-1 < vv[i+1].S) {
				mn = min(mn, C);
				m1.pop(); m2.pop(); m3.pop();
				z++;
			}
		}
	}
	
	cout << mn << "\n";

	return 0;
}

Compilation message

cultivation.cpp:3: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    3 | #pragma optimize("O3, unroll-loops")
      | 
cultivation.cpp: In function 'int main()':
cultivation.cpp:117:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  117 |   for (int i = 0; i+1 < vv.size(); i++) {
      |                   ~~~~^~~~~~~~~~~
cultivation.cpp:114:12: warning: unused variable 'oo' [-Wunused-variable]
  114 |   const ll oo = 1e18;
      |            ^~

Subtask #1
5.0 / 5.0

#	Verdict	Memory	Grader output
1	Correct	344 KB	Output is correct
2	Correct	344 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	348 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	344 KB	Output is correct
11	Correct	344 KB	Output is correct
12	Correct	348 KB	Output is correct
13	Correct	348 KB	Output is correct
14	Correct	348 KB	Output is correct
15	Correct	348 KB	Output is correct
16	Correct	344 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	860 KB	Output is correct
19	Correct	1 ms	604 KB	Output is correct
20	Correct	0 ms	344 KB	Output is correct
21	Correct	1 ms	604 KB	Output is correct
22	Correct	2 ms	992 KB	Output is correct
23	Correct	1 ms	604 KB	Output is correct
24	Correct	4 ms	1752 KB	Output is correct
25	Correct	3 ms	1240 KB	Output is correct
26	Correct	7 ms	2772 KB	Output is correct
27	Correct	7 ms	2772 KB	Output is correct
28	Correct	4 ms	1752 KB	Output is correct
29	Correct	7 ms	2732 KB	Output is correct
30	Correct	8 ms	2728 KB	Output is correct
31	Correct	8 ms	2768 KB	Output is correct
32	Correct	8 ms	2772 KB	Output is correct

Subtask #3
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	860 KB	Output is correct
19	Correct	1 ms	604 KB	Output is correct
20	Correct	0 ms	344 KB	Output is correct
21	Correct	1 ms	604 KB	Output is correct
22	Correct	2 ms	992 KB	Output is correct
23	Correct	1 ms	604 KB	Output is correct
24	Correct	4 ms	1752 KB	Output is correct
25	Correct	3 ms	1240 KB	Output is correct
26	Correct	7 ms	2772 KB	Output is correct
27	Correct	7 ms	2772 KB	Output is correct
28	Correct	4 ms	1752 KB	Output is correct
29	Correct	7 ms	2732 KB	Output is correct
30	Correct	8 ms	2728 KB	Output is correct
31	Correct	8 ms	2768 KB	Output is correct
32	Correct	8 ms	2772 KB	Output is correct
33	Correct	11 ms	2516 KB	Output is correct
34	Correct	13 ms	2520 KB	Output is correct
35	Correct	15 ms	2768 KB	Output is correct
36	Correct	16 ms	2772 KB	Output is correct
37	Correct	16 ms	2780 KB	Output is correct
38	Correct	16 ms	2772 KB	Output is correct
39	Correct	17 ms	2772 KB	Output is correct
40	Correct	16 ms	2772 KB	Output is correct
41	Correct	11 ms	2264 KB	Output is correct
42	Correct	12 ms	2592 KB	Output is correct
43	Correct	16 ms	2772 KB	Output is correct
44	Correct	13 ms	2772 KB	Output is correct

Subtask #4
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	1 ms	348 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	1 ms	348 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #6
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	860 KB	Output is correct
19	Correct	1 ms	604 KB	Output is correct
20	Correct	0 ms	344 KB	Output is correct
21	Correct	1 ms	604 KB	Output is correct
22	Correct	2 ms	992 KB	Output is correct
23	Correct	1 ms	604 KB	Output is correct
24	Correct	4 ms	1752 KB	Output is correct
25	Correct	3 ms	1240 KB	Output is correct
26	Correct	7 ms	2772 KB	Output is correct
27	Correct	7 ms	2772 KB	Output is correct
28	Correct	4 ms	1752 KB	Output is correct
29	Correct	7 ms	2732 KB	Output is correct
30	Correct	8 ms	2728 KB	Output is correct
31	Correct	8 ms	2768 KB	Output is correct
32	Correct	8 ms	2772 KB	Output is correct
33	Correct	11 ms	2516 KB	Output is correct
34	Correct	13 ms	2520 KB	Output is correct
35	Correct	15 ms	2768 KB	Output is correct
36	Correct	16 ms	2772 KB	Output is correct
37	Correct	16 ms	2780 KB	Output is correct
38	Correct	16 ms	2772 KB	Output is correct
39	Correct	17 ms	2772 KB	Output is correct
40	Correct	16 ms	2772 KB	Output is correct
41	Correct	11 ms	2264 KB	Output is correct
42	Correct	12 ms	2592 KB	Output is correct
43	Correct	16 ms	2772 KB	Output is correct
44	Correct	13 ms	2772 KB	Output is correct
45	Incorrect	1 ms	348 KB	Output isn't correct
46	Halted	0 ms	0 KB	-

Submission #1000598

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 15.0 / 15.0

Subtask #4 0 / 30.0

Subtask #5 0 / 20.0

Subtask #6 0 / 20.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
15.0 / 15.0

Subtask #4
0 / 30.0

Subtask #5
0 / 20.0

Subtask #6
0 / 20.0