oj.uz

Submission #672191

# Submission time Handle Problem Language Result Execution time Memory
672191 2022-12-15T02:42:25 Z amunduzbaev Cultivation (JOI17_cultivation) C++17
15 / 100
 2000 ms 820 KB 
#include "bits/stdc++.h"
using namespace std;

#define ar array
typedef long long ll;
//~ #define int ll

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n, m; cin >> n >> m;
	int sz; cin >> sz;
	vector<int> x(sz), y(sz), t;
	for(int i=0;i<sz;i++){
		cin >> x[i] >> y[i];
	} 
	
	t = x;
	sort(t.begin(), t.end());
	t.erase(unique(t.begin(), t.end()), t.end());
	vector<int> cnt(t.size());
	
	vector<int> id(sz);
	for(int i=0;i<sz;i++){
		id[i] = lower_bound(t.begin(), t.end(), x[i]) - t.begin() + 1;
	}
	vector<ar<int, 2>> tot;
	vector<int> v, is;
	vector<ar<int, 3>> Mn;
	set<int> mn, used;
	
	int res = 2 * (n + m);
	set<int> don;
	auto check = [&](int d){
		if(don.count(d)) return;
		don.insert(d);
		tot.clear(); v.clear(), is.clear(), Mn.clear();
		for(int i=0;i<sz;i++){
			//~ cout<<max(1LL, y[i] - w)<<" "<<min(y[i] + e, m)<<"\n";
			tot.push_back({y[i], id[i]});
			tot.push_back({y[i] + d + 1, -id[i]});
		}
		sort(tot.begin(), tot.end());
		
		auto add = [&](int x){
			if(used.empty()){
				used.insert(x);
				return;
			}
			auto it = used.upper_bound(x);
			if(it == used.begin()){
				mn.insert(*it - x - 1);
				used.insert(x);
				return;
			}
			if(it == used.end()){
				it--;
				mn.insert(x - *it - 1);
				used.insert(x);
				return;
			}
			
			auto l = it; l--;
			mn.erase(*it - *l - 1);
			mn.insert(*it - x - 1);
			mn.insert(x - *l - 1);
			used.insert(x);
		};
		auto del = [&](int x){
			used.erase(x);
			if(used.empty()) return;
			auto it = used.upper_bound(x);
			if(it == used.begin()){
				mn.erase(*it - x - 1);
				return;
			}
			if(it == used.end()){
				it--;
				mn.erase(x - *it - 1);
				return;
			}
			
			auto l = it; l--;
			mn.erase(*it - x - 1);
			mn.erase(x - *l - 1);
			mn.insert(*it - *l - 1);
		};
		
		for(int i=0;i<(int)tot.size();){
			int j = i;
			while(j < (int)tot.size() && tot[j][0] == tot[i][0]){
				if(tot[j][1] > 0){
					if(!cnt[tot[j][1] - 1]) add(t[tot[j][1] - 1]);
					cnt[tot[j][1] - 1]++;
				} else{
					cnt[-tot[j][1] - 1]--;
					if(!cnt[-tot[j][1] - 1]) del(t[-tot[j][1] - 1]);
				}
				j++;
			}
			
			v.push_back(tot[i][0]);
			if(used.empty()){
				Mn.push_back({0, 0, 0});
				is.push_back(1);
			} else {
				//~ assert(!mn.empty());
				Mn.push_back({*used.begin() - 1, n - *--used.end(), (mn.empty() ? 0 : *--mn.end())});
				is.push_back(0);
			}
			
			i = j;
		}
		{
			multiset<int> mnl, mnr, mn;
			int r = 0, cnt = 0;
			for(int i=0;i + 1 < (int)v.size();i++){
				while(r < (int)v.size() && v[r] - v[i] < m){
					mn.insert(Mn[r][2]);
					mnl.insert(Mn[r][0]);
					mnr.insert(Mn[r][1]);
					cnt += is[r];
					r++;
				}
				
				if(cnt == 0){
					res = min(res, d + max(*--mn.end(), *--mnl.end() + *--mnr.end()));
				}
				
				mn.erase(mn.find(Mn[i][2]));
				mnl.erase(mnl.find(Mn[i][0]));
				mnr.erase(mnr.find(Mn[i][1]));
				cnt -= is[i];
			}
		}
	};
	
	for(int i=0;i<sz;i++){
		for(int j=0;j<sz;j++){
			check(y[i] - 1 + m - y[j]);
		}
		
		for(int k=0;k<sz;k++){
			if(y[i] >= y[k]) continue;
			check(y[k] - y[i] - 1);
		}
	}
	
	cout<<res<<"\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 320 KB Output is correct
18 Correct 2 ms 212 KB Output is correct
19 Correct 2 ms 316 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 2 ms 212 KB Output is correct
22 Correct 6 ms 340 KB Output is correct
23 Correct 2 ms 212 KB Output is correct
24 Correct 8 ms 340 KB Output is correct
25 Correct 6 ms 340 KB Output is correct
26 Correct 12 ms 340 KB Output is correct
27 Correct 11 ms 344 KB Output is correct
28 Correct 10 ms 340 KB Output is correct
29 Correct 12 ms 340 KB Output is correct
30 Correct 12 ms 340 KB Output is correct
31 Correct 12 ms 340 KB Output is correct
32 Correct 12 ms 340 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 320 KB Output is correct
18 Correct 2 ms 212 KB Output is correct
19 Correct 2 ms 316 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 2 ms 212 KB Output is correct
22 Correct 6 ms 340 KB Output is correct
23 Correct 2 ms 212 KB Output is correct
24 Correct 8 ms 340 KB Output is correct
25 Correct 6 ms 340 KB Output is correct
26 Correct 12 ms 340 KB Output is correct
27 Correct 11 ms 344 KB Output is correct
28 Correct 10 ms 340 KB Output is correct
29 Correct 12 ms 340 KB Output is correct
30 Correct 12 ms 340 KB Output is correct
31 Correct 12 ms 340 KB Output is correct
32 Correct 12 ms 340 KB Output is correct
33 Execution timed out 2090 ms 820 KB Time limit exceeded
34 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 340 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 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 320 KB Output is correct
18 Correct 2 ms 212 KB Output is correct
19 Correct 2 ms 316 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 2 ms 212 KB Output is correct
22 Correct 6 ms 340 KB Output is correct
23 Correct 2 ms 212 KB Output is correct
24 Correct 8 ms 340 KB Output is correct
25 Correct 6 ms 340 KB Output is correct
26 Correct 12 ms 340 KB Output is correct
27 Correct 11 ms 344 KB Output is correct
28 Correct 10 ms 340 KB Output is correct
29 Correct 12 ms 340 KB Output is correct
30 Correct 12 ms 340 KB Output is correct
31 Correct 12 ms 340 KB Output is correct
32 Correct 12 ms 340 KB Output is correct
33 Execution timed out 2090 ms 820 KB Time limit exceeded
34 Halted 0 ms 0 KB -