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Submission #1005198

# Submission time Handle Problem Language Result Execution time Memory
1005198 2024-06-22T08:40:49 Z emptypringlescan Tiles (BOI24_tiles) C++17
49 / 100
 379 ms 7876 KB 
#include <bits/stdc++.h>
using namespace std;
int32_t main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n,m;
	cin >> n >> m;
	pair<int,int> arr[n];
	for(int i=0; i<n; i++) cin >> arr[i].first >> arr[i].second;
	vector<pair<int,pair<int,int> > > vert;
	for(int i=0; i<n-1; i++){
		if(arr[i].first==arr[i+1].first) vert.push_back({arr[i].first,{arr[i].second,arr[i+1].second}});
	}
	if(arr[0].first==arr[n-1].first) vert.push_back({arr[0].first,{arr[0].second,arr[n-1].second}});
	set<pair<int,int> > odd,even,all;
	set<pair<int,int> >::iterator it;
	sort(vert.begin(),vert.end());
	int ans=0,bad=0;
	for(int o=0; o<(int)vert.size(); o++){
		pair<int,pair<int,int> > i=vert[o];
		pair<int,int> ln=i.second;
		if(ln.second<ln.first) swap(ln.second,ln.first);
		it=all.upper_bound({ln.first,1e9});
		if(it!=all.begin()) it--;
		if(it!=all.end()&&it->first<=ln.first&&it->second>=ln.second){
			pair<int,int> tmp=*it;
			all.erase(it);
			if((it->second-it->first)%2) bad--;
			if(tmp.first<ln.first) all.insert({tmp.first,ln.first});
			if(ln.second<tmp.second) all.insert({ln.second,tmp.second});
			if((ln.first-tmp.first)%2) bad++;
			if((tmp.second-ln.second)%2) bad++;
		}
		else{
			it=all.lower_bound(ln);
			if(it!=all.end()&&it->first==ln.second){
				ln.second=it->second;
				if((it->second-it->first)%2) bad--;
				all.erase(it);
			}
			it=all.lower_bound(ln);
			if(it!=all.begin()) it--;
			if(it!=all.end()&&it->second==ln.first){
				ln.first=it->first;
				if((it->second-it->first)%2) bad--;
				all.erase(it);
			}
			all.insert(ln);
			if((ln.second-ln.first)%2) bad++;
		}
		if(o==(int)vert.size()-1||vert[o+1].first!=vert[o].first){
			if(bad>0){
				cout << ans;
				return 0;
			}
		}
		bool got=false;
		it=odd.lower_bound(ln);
		if(it!=odd.begin()) it--;
		for(;it!=odd.end();it++){
			if(it->second<=ln.first) continue;
			if(it->first>=ln.second) break;
			if(i.first%2==0){
				cout << ans;
				return 0;
			}
			got=true;
			pair<int,int> tmp=*it;
			odd.erase(it);
			odd.insert({max(tmp.first,ln.first),min(tmp.second,ln.second)});
			
		}
		it=even.lower_bound(ln);
		if(it!=even.begin()) it--;
		for(;it!=even.end();it++){
			if(it->second<=ln.first) continue;
			if(it->first>=ln.second) break;
			if(i.first%2==1){
				cout << ans;
				return 0;
			}
			got=true;
			pair<int,int> tmp=*it;
			even.erase(it);
			even.insert({max(tmp.first,ln.first),min(tmp.second,ln.second)});
			
		}
		if(!got){
			if(i.first%2==1) odd.insert(ln);
			else even.insert(ln);
		}
		if(i.first%2==1&&even.empty()){
			if(o==(int)vert.size()-1||vert[o+1].first!=vert[o].first) ans=i.first;
			if(o!=(int)vert.size()-1&&vert[o+1].first!=vert[o].first){
				if(vert[o+1].first%2==1) ans=vert[o+1].first;
				else ans=vert[o+1].first-1;
			}
		}
		else if(i.first%2==0&&odd.empty()){
			if(o==(int)vert.size()-1||vert[o+1].first!=vert[o].first) ans=i.first;
			if(o!=(int)vert.size()-1&&vert[o+1].first!=vert[o].first){
				if(vert[o+1].first%2==0) ans=vert[o+1].first;
				else ans=vert[o+1].first-1;
			}
		}
	}
	cout << ans;
	
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 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 384 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 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 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 384 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 348 KB Output is correct
11 Correct 0 ms 348 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 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 6 ms 1052 KB Output is correct
3 Correct 52 ms 6856 KB Output is correct
4 Correct 28 ms 4044 KB Output is correct
5 Correct 28 ms 4048 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 43 ms 5324 KB Output is correct
9 Correct 30 ms 4564 KB Output is correct
10 Correct 57 ms 7876 KB Output is correct
11 Correct 23 ms 3796 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 62 ms 7760 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 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 24 ms 3532 KB Output is correct
6 Correct 43 ms 3540 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 54 ms 684 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Incorrect 0 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 29 ms 4044 KB Output is correct
3 Correct 28 ms 4040 KB Output is correct
4 Correct 28 ms 3540 KB Output is correct
5 Correct 42 ms 3536 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 33 ms 3668 KB Output is correct
9 Correct 34 ms 3528 KB Output is correct
10 Correct 58 ms 3540 KB Output is correct
11 Correct 61 ms 3528 KB Output is correct
12 Correct 32 ms 3664 KB Output is correct
13 Correct 28 ms 3664 KB Output is correct
14 Correct 55 ms 7628 KB Output is correct
15 Correct 60 ms 3540 KB Output is correct
16 Correct 379 ms 3660 KB Output is correct
17 Correct 47 ms 3536 KB Output is correct
18 Correct 33 ms 3528 KB Output is correct
19 Correct 29 ms 3532 KB Output is correct
20 Correct 32 ms 3532 KB Output is correct
21 Correct 127 ms 3652 KB Output is correct
22 Incorrect 131 ms 3532 KB Output isn't correct
23 Halted 0 ms 0 KB -

Subtask #6
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 6856 KB Output is correct
2 Correct 28 ms 3912 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 34 ms 3664 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 84 ms 3672 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 64 ms 4848 KB Output is correct
9 Correct 138 ms 3540 KB Output is correct
10 Correct 44 ms 3664 KB Output is correct
11 Correct 29 ms 3536 KB Output is correct
12 Correct 37 ms 4548 KB Output is correct
13 Correct 139 ms 3660 KB Output is correct
14 Correct 56 ms 3528 KB Output is correct
15 Correct 142 ms 3528 KB Output is correct
16 Correct 53 ms 7720 KB Output is correct
17 Correct 57 ms 7784 KB Output is correct
18 Correct 67 ms 7624 KB Output is correct
19 Correct 31 ms 4032 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 46 ms 5372 KB Output is correct
22 Correct 33 ms 4552 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 408 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 30 ms 4024 KB Output is correct
37 Correct 366 ms 3536 KB Output is correct
38 Correct 362 ms 3540 KB Output is correct
39 Correct 42 ms 3540 KB Output is correct
40 Correct 42 ms 3540 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 1 ms 348 KB Output is correct

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 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 384 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 348 KB Output is correct
11 Correct 0 ms 348 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 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 6 ms 1052 KB Output is correct
34 Correct 52 ms 6856 KB Output is correct
35 Correct 28 ms 4044 KB Output is correct
36 Correct 28 ms 4048 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 43 ms 5324 KB Output is correct
40 Correct 30 ms 4564 KB Output is correct
41 Correct 57 ms 7876 KB Output is correct
42 Correct 23 ms 3796 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 62 ms 7760 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 24 ms 3532 KB Output is correct
54 Correct 43 ms 3540 KB Output is correct
55 Correct 1 ms 344 KB Output is correct
56 Correct 1 ms 344 KB Output is correct
57 Correct 0 ms 344 KB Output is correct
58 Correct 54 ms 684 KB Output is correct
59 Correct 1 ms 344 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Incorrect 0 ms 348 KB Output isn't correct
62 Halted 0 ms 0 KB -