Submission #55289

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
55289	2018-07-06T22:02:21 Z	ksun48	Cultivation (JOI17_cultivation)	C++14	60 / 100	2000 ms	1280 KB

cultivation

#include <bits/stdc++.h>
using namespace std;
typedef long long LL;

LL r, c, n;
vector<pair<LL,LL> > seeds;
const LL INF = 2100100100;
LL best = INF;
set<LL> tried;
void tryxfast(LL x){
	if(x < 0 || tried.find(x) != tried.end()){
		return;
	}
	tried.insert(x);

	map<LL, vector<pair<LL, LL> > > events;
	for(pair<LL,LL> z : seeds){
		events[z.first].push_back({0, z.second}); // ins
		events[z.first + x + 1].push_back({1, z.second}); // del
	}

	vector<LL> pos;
	vector<LL> ups;
	vector<LL> downs;
	vector<LL> totals;

	multiset<LL> grass;
	grass.insert(-1);
	grass.insert(c);
	multiset<LL> diffs;
	diffs.insert(c+1);
	for(auto tt : events){
		for(pair<LL,LL> event : tt.second){
			LL a = event.second;
			if(event.first == 0){
				grass.insert(a);
			}
			LL a1 = *(--grass.find(a));
			LL a2 = *(++grass.find(a));
			if(event.first == 0){
				diffs.erase(diffs.find(a2-a1));
				diffs.insert(a-a1);
				diffs.insert(a2-a);
			} else if(event.first == 1){
				diffs.erase(diffs.find(a-a1));
				diffs.erase(diffs.find(a2-a));
				diffs.insert(a2-a1);
			}
			if(event.first == 1){
				grass.erase(grass.find(a));
			}
		}
		pos.push_back(tt.first);
		totals.push_back( *(--diffs.end()) );
		ups.push_back( *(++grass.begin()) - 0 );
		downs.push_back( c-1 - *(--(--grass.end())) );
	}
	// two pointers: 
	LL j = 0;
	multiset<LL> upset;
	multiset<LL> downset;
	multiset<LL> totalset;
	for(LL i = 0; i < pos.size(); i++){
		while(j < pos.size() && pos[j] <= pos[i] + r - 1){
			upset.insert(-ups[j]);
			downset.insert(-downs[j]);
			totalset.insert(-totals[j]);
			j++;
		}
		LL total = -*totalset.begin();
		if(total < c+1){
			best = min(best, max(-*upset.begin() + -*downset.begin(), total - 1) + x);
		}
		upset.erase(upset.find(-ups[i]));
		downset.erase(downset.find(-downs[i]));
		totalset.erase(totalset.find(-totals[i]));
	}
}
int main(){
	cin.sync_with_stdio(0); cin.tie(0);
	cin >> r >> c >> n;
	for(LL i = 0; i < n; i++){
		LL s, e;
		cin >> s >> e;
		s--; e--;
		seeds.push_back({s,e});
	}
	sort(seeds.begin(), seeds.end());
	for(LL i = 0; i < n; i++){
		for(LL j = 0; j < n; j++){
			tryxfast(seeds[i].first + r-1 - seeds[j].first);
			tryxfast(seeds[i].first -   1 - seeds[j].first);
		}
	}
	cout << best << '\n';
}

Compilation message

cultivation.cpp: In function 'void tryxfast(LL)':
cultivation.cpp:63:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(LL i = 0; i < pos.size(); i++){
                ~~^~~~~~~~~~~~
cultivation.cpp:64:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(j < pos.size() && pos[j] <= pos[i] + r - 1){
         ~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	364 KB	Output is correct
3	Correct	2 ms	440 KB	Output is correct
4	Correct	2 ms	448 KB	Output is correct
5	Correct	3 ms	448 KB	Output is correct
6	Correct	2 ms	504 KB	Output is correct
7	Correct	3 ms	504 KB	Output is correct
8	Correct	2 ms	612 KB	Output is correct
9	Correct	2 ms	740 KB	Output is correct
10	Correct	2 ms	740 KB	Output is correct
11	Correct	2 ms	740 KB	Output is correct
12	Correct	2 ms	740 KB	Output is correct
13	Correct	3 ms	740 KB	Output is correct
14	Correct	3 ms	740 KB	Output is correct
15	Correct	3 ms	740 KB	Output is correct
16	Correct	3 ms	740 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	364 KB	Output is correct
3	Correct	2 ms	440 KB	Output is correct
4	Correct	2 ms	448 KB	Output is correct
5	Correct	3 ms	448 KB	Output is correct
6	Correct	2 ms	504 KB	Output is correct
7	Correct	3 ms	504 KB	Output is correct
8	Correct	2 ms	612 KB	Output is correct
9	Correct	2 ms	740 KB	Output is correct
10	Correct	2 ms	740 KB	Output is correct
11	Correct	2 ms	740 KB	Output is correct
12	Correct	2 ms	740 KB	Output is correct
13	Correct	3 ms	740 KB	Output is correct
14	Correct	3 ms	740 KB	Output is correct
15	Correct	3 ms	740 KB	Output is correct
16	Correct	3 ms	740 KB	Output is correct
17	Correct	3 ms	740 KB	Output is correct
18	Correct	7 ms	748 KB	Output is correct
19	Correct	8 ms	748 KB	Output is correct
20	Correct	2 ms	748 KB	Output is correct
21	Correct	9 ms	748 KB	Output is correct
22	Correct	19 ms	748 KB	Output is correct
23	Correct	3 ms	748 KB	Output is correct
24	Correct	28 ms	748 KB	Output is correct
25	Correct	22 ms	748 KB	Output is correct
26	Correct	48 ms	764 KB	Output is correct
27	Correct	40 ms	764 KB	Output is correct
28	Correct	29 ms	764 KB	Output is correct
29	Correct	37 ms	764 KB	Output is correct
30	Correct	40 ms	764 KB	Output is correct
31	Correct	37 ms	764 KB	Output is correct
32	Correct	37 ms	764 KB	Output is correct

Subtask #3
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	364 KB	Output is correct
3	Correct	2 ms	440 KB	Output is correct
4	Correct	2 ms	448 KB	Output is correct
5	Correct	3 ms	448 KB	Output is correct
6	Correct	2 ms	504 KB	Output is correct
7	Correct	3 ms	504 KB	Output is correct
8	Correct	2 ms	612 KB	Output is correct
9	Correct	2 ms	740 KB	Output is correct
10	Correct	2 ms	740 KB	Output is correct
11	Correct	2 ms	740 KB	Output is correct
12	Correct	2 ms	740 KB	Output is correct
13	Correct	3 ms	740 KB	Output is correct
14	Correct	3 ms	740 KB	Output is correct
15	Correct	3 ms	740 KB	Output is correct
16	Correct	3 ms	740 KB	Output is correct
17	Correct	3 ms	740 KB	Output is correct
18	Correct	7 ms	748 KB	Output is correct
19	Correct	8 ms	748 KB	Output is correct
20	Correct	2 ms	748 KB	Output is correct
21	Correct	9 ms	748 KB	Output is correct
22	Correct	19 ms	748 KB	Output is correct
23	Correct	3 ms	748 KB	Output is correct
24	Correct	28 ms	748 KB	Output is correct
25	Correct	22 ms	748 KB	Output is correct
26	Correct	48 ms	764 KB	Output is correct
27	Correct	40 ms	764 KB	Output is correct
28	Correct	29 ms	764 KB	Output is correct
29	Correct	37 ms	764 KB	Output is correct
30	Correct	40 ms	764 KB	Output is correct
31	Correct	37 ms	764 KB	Output is correct
32	Correct	37 ms	764 KB	Output is correct
33	Correct	5 ms	764 KB	Output is correct
34	Correct	29 ms	764 KB	Output is correct
35	Correct	46 ms	764 KB	Output is correct
36	Correct	42 ms	764 KB	Output is correct
37	Correct	41 ms	764 KB	Output is correct
38	Correct	45 ms	764 KB	Output is correct
39	Correct	43 ms	764 KB	Output is correct
40	Correct	42 ms	764 KB	Output is correct
41	Correct	29 ms	764 KB	Output is correct
42	Correct	36 ms	764 KB	Output is correct
43	Correct	40 ms	764 KB	Output is correct
44	Correct	44 ms	764 KB	Output is correct

Subtask #4
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	25 ms	764 KB	Output is correct
2	Correct	47 ms	764 KB	Output is correct
3	Correct	48 ms	764 KB	Output is correct
4	Correct	45 ms	764 KB	Output is correct
5	Correct	54 ms	764 KB	Output is correct
6	Correct	19 ms	764 KB	Output is correct
7	Correct	5 ms	764 KB	Output is correct
8	Correct	56 ms	764 KB	Output is correct
9	Correct	27 ms	764 KB	Output is correct
10	Correct	51 ms	764 KB	Output is correct
11	Correct	54 ms	764 KB	Output is correct
12	Correct	54 ms	764 KB	Output is correct
13	Correct	11 ms	764 KB	Output is correct
14	Correct	25 ms	764 KB	Output is correct
15	Correct	14 ms	764 KB	Output is correct
16	Correct	50 ms	764 KB	Output is correct
17	Correct	49 ms	764 KB	Output is correct
18	Correct	22 ms	764 KB	Output is correct
19	Correct	50 ms	764 KB	Output is correct
20	Correct	42 ms	764 KB	Output is correct

Subtask #5
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	25 ms	764 KB	Output is correct
2	Correct	47 ms	764 KB	Output is correct
3	Correct	48 ms	764 KB	Output is correct
4	Correct	45 ms	764 KB	Output is correct
5	Correct	54 ms	764 KB	Output is correct
6	Correct	19 ms	764 KB	Output is correct
7	Correct	5 ms	764 KB	Output is correct
8	Correct	56 ms	764 KB	Output is correct
9	Correct	27 ms	764 KB	Output is correct
10	Correct	51 ms	764 KB	Output is correct
11	Correct	54 ms	764 KB	Output is correct
12	Correct	54 ms	764 KB	Output is correct
13	Correct	11 ms	764 KB	Output is correct
14	Correct	25 ms	764 KB	Output is correct
15	Correct	14 ms	764 KB	Output is correct
16	Correct	50 ms	764 KB	Output is correct
17	Correct	49 ms	764 KB	Output is correct
18	Correct	22 ms	764 KB	Output is correct
19	Correct	50 ms	764 KB	Output is correct
20	Correct	42 ms	764 KB	Output is correct
21	Execution timed out	2066 ms	1280 KB	Time limit exceeded
22	Halted	0 ms	0 KB	-

Subtask #6
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	364 KB	Output is correct
3	Correct	2 ms	440 KB	Output is correct
4	Correct	2 ms	448 KB	Output is correct
5	Correct	3 ms	448 KB	Output is correct
6	Correct	2 ms	504 KB	Output is correct
7	Correct	3 ms	504 KB	Output is correct
8	Correct	2 ms	612 KB	Output is correct
9	Correct	2 ms	740 KB	Output is correct
10	Correct	2 ms	740 KB	Output is correct
11	Correct	2 ms	740 KB	Output is correct
12	Correct	2 ms	740 KB	Output is correct
13	Correct	3 ms	740 KB	Output is correct
14	Correct	3 ms	740 KB	Output is correct
15	Correct	3 ms	740 KB	Output is correct
16	Correct	3 ms	740 KB	Output is correct
17	Correct	3 ms	740 KB	Output is correct
18	Correct	7 ms	748 KB	Output is correct
19	Correct	8 ms	748 KB	Output is correct
20	Correct	2 ms	748 KB	Output is correct
21	Correct	9 ms	748 KB	Output is correct
22	Correct	19 ms	748 KB	Output is correct
23	Correct	3 ms	748 KB	Output is correct
24	Correct	28 ms	748 KB	Output is correct
25	Correct	22 ms	748 KB	Output is correct
26	Correct	48 ms	764 KB	Output is correct
27	Correct	40 ms	764 KB	Output is correct
28	Correct	29 ms	764 KB	Output is correct
29	Correct	37 ms	764 KB	Output is correct
30	Correct	40 ms	764 KB	Output is correct
31	Correct	37 ms	764 KB	Output is correct
32	Correct	37 ms	764 KB	Output is correct
33	Correct	5 ms	764 KB	Output is correct
34	Correct	29 ms	764 KB	Output is correct
35	Correct	46 ms	764 KB	Output is correct
36	Correct	42 ms	764 KB	Output is correct
37	Correct	41 ms	764 KB	Output is correct
38	Correct	45 ms	764 KB	Output is correct
39	Correct	43 ms	764 KB	Output is correct
40	Correct	42 ms	764 KB	Output is correct
41	Correct	29 ms	764 KB	Output is correct
42	Correct	36 ms	764 KB	Output is correct
43	Correct	40 ms	764 KB	Output is correct
44	Correct	44 ms	764 KB	Output is correct
45	Correct	25 ms	764 KB	Output is correct
46	Correct	47 ms	764 KB	Output is correct
47	Correct	48 ms	764 KB	Output is correct
48	Correct	45 ms	764 KB	Output is correct
49	Correct	54 ms	764 KB	Output is correct
50	Correct	19 ms	764 KB	Output is correct
51	Correct	5 ms	764 KB	Output is correct
52	Correct	56 ms	764 KB	Output is correct
53	Correct	27 ms	764 KB	Output is correct
54	Correct	51 ms	764 KB	Output is correct
55	Correct	54 ms	764 KB	Output is correct
56	Correct	54 ms	764 KB	Output is correct
57	Correct	11 ms	764 KB	Output is correct
58	Correct	25 ms	764 KB	Output is correct
59	Correct	14 ms	764 KB	Output is correct
60	Correct	50 ms	764 KB	Output is correct
61	Correct	49 ms	764 KB	Output is correct
62	Correct	22 ms	764 KB	Output is correct
63	Correct	50 ms	764 KB	Output is correct
64	Correct	42 ms	764 KB	Output is correct
65	Execution timed out	2066 ms	1280 KB	Time limit exceeded
66	Halted	0 ms	0 KB	-

Submission #55289

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 15.0 / 15.0

Subtask #4 30.0 / 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
30.0 / 30.0

Subtask #5
0 / 20.0

Subtask #6
0 / 20.0