oj.uz

Submission #672029

# Submission time Handle Problem Language Result Execution time Memory
672029 2022-12-14T16:05:39 Z amunduzbaev Cultivation (JOI17_cultivation) C++17
5 / 100
 2000 ms 324 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);
	auto check = [&](int 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 212 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 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 320 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 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
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 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 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 320 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 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 5 ms 320 KB Output is correct
18 Correct 159 ms 308 KB Output is correct
19 Correct 19 ms 212 KB Output is correct
20 Correct 6 ms 324 KB Output is correct
21 Correct 101 ms 212 KB Output is correct
22 Correct 1037 ms 316 KB Output is correct
23 Correct 29 ms 212 KB Output is correct
24 Execution timed out 2075 ms 212 KB Time limit exceeded
25 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 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 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 320 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 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 5 ms 320 KB Output is correct
18 Correct 159 ms 308 KB Output is correct
19 Correct 19 ms 212 KB Output is correct
20 Correct 6 ms 324 KB Output is correct
21 Correct 101 ms 212 KB Output is correct
22 Correct 1037 ms 316 KB Output is correct
23 Correct 29 ms 212 KB Output is correct
24 Execution timed out 2075 ms 212 KB Time limit exceeded
25 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 212 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 212 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 212 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 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 320 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 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 5 ms 320 KB Output is correct
18 Correct 159 ms 308 KB Output is correct
19 Correct 19 ms 212 KB Output is correct
20 Correct 6 ms 324 KB Output is correct
21 Correct 101 ms 212 KB Output is correct
22 Correct 1037 ms 316 KB Output is correct
23 Correct 29 ms 212 KB Output is correct
24 Execution timed out 2075 ms 212 KB Time limit exceeded
25 Halted 0 ms 0 KB -