Submission #401649

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
401649	2021-05-10T15:54:10 Z	priority_queue	Carnival Tickets (IOI20_tickets)	C++14	100 / 100	870 ms	72932 KB

tickets

// ioi 2020, day 1, p3 ticket

#include <bits/stdc++.h>

using namespace std;

#define forint(i, N) for (int i = 0; i < (N); i++)

using namespace std;

void allocate_tickets(vector< vector<int> > s);

long long find_maximum(int k, vector< vector<int> > x) {
	
	int n = x.size();
	int m = x[0].size();

	vector< vector<int> > s(n, vector<int>(m, -1));

	vector<int> min_index(n, k-1);
	vector<int> max_index(n, m-1);

	vector<pair<long long, int>> increase(n);

	long long total = 0;

	/*
	forint(i, k) {
		forint(j, n) {			
			increase[j].first = x[j][min_index[j]] + x[j][max_index[j]];
			increase[j].second = j;
		}
		nth_element(increase.begin(), increase.begin() + n/2, increase.end());

		for (int j = n/2; j < n; j++) {
			max_index[increase[j].second]--;
			min_index[increase[j].second]--;
		}
	}
	*/

	priority_queue< pair<int, int> > pq;
	forint(j, n) {			
		pq.push({x[j][min_index[j]] + x[j][max_index[j]], j});
		//increase[j].second = j;
	}

	forint(i, k*n/2) {
		auto t = pq.top();
		pq.pop();
		max_index[t.second]--;
		min_index[t.second]--;

		if (min_index[t.second] >= 0) {
			pq.push({x[t.second][min_index[t.second]] + x[t.second][max_index[t.second]], t.second});
		}
	}


	forint(i, k) {
		forint(j, n) {			
			increase[j].first = max_index[j];
			increase[j].second = j;
		}
		nth_element(increase.begin(), increase.begin() + n/2, increase.end());

		for (int j = 0; j < n/2; j++) {		 	  
			max_index[increase[j].second]++;
			total += x[increase[j].second][max_index[increase[j].second]];
			s[increase[j].second][max_index[increase[j].second]] = i;
		}
		
		for (int j = n/2; j < n; j++) {
			total -= x[increase[j].second][min_index[increase[j].second]];
			s[increase[j].second][min_index[increase[j].second]] = i;
			min_index[increase[j].second]--;
		}
	}


	allocate_tickets(s);

	return total;
}

Subtask #1

11.0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	2 ms	716 KB	Output is correct

Subtask #2

16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	296 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	3 ms	512 KB	Output is correct
5	Correct	28 ms	3236 KB	Output is correct
6	Correct	645 ms	55704 KB	Output is correct

Subtask #3

14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	296 KB	Output is correct
4	Correct	2 ms	460 KB	Output is correct
5	Correct	24 ms	2480 KB	Output is correct
6	Correct	598 ms	56676 KB	Output is correct
7	Correct	652 ms	57180 KB	Output is correct
8	Correct	4 ms	460 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	7 ms	844 KB	Output is correct
13	Correct	21 ms	2088 KB	Output is correct
14	Correct	21 ms	2124 KB	Output is correct
15	Correct	651 ms	57752 KB	Output is correct

Subtask #4

14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	3 ms	460 KB	Output is correct
5	Correct	32 ms	3268 KB	Output is correct
6	Correct	6 ms	716 KB	Output is correct
7	Correct	7 ms	1012 KB	Output is correct
8	Correct	870 ms	57248 KB	Output is correct
9	Correct	791 ms	53544 KB	Output is correct
10	Correct	778 ms	53540 KB	Output is correct
11	Correct	859 ms	57152 KB	Output is correct

Subtask #5

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	3 ms	428 KB	Output is correct
3	Correct	3 ms	460 KB	Output is correct
4	Correct	3 ms	460 KB	Output is correct
5	Correct	3 ms	460 KB	Output is correct
6	Correct	3 ms	492 KB	Output is correct
7	Correct	1 ms	292 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	4 ms	460 KB	Output is correct
10	Correct	3 ms	460 KB	Output is correct
11	Correct	3 ms	460 KB	Output is correct
12	Correct	3 ms	488 KB	Output is correct

Subtask #6

23.0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	3 ms	428 KB	Output is correct
3	Correct	3 ms	460 KB	Output is correct
4	Correct	3 ms	460 KB	Output is correct
5	Correct	3 ms	460 KB	Output is correct
6	Correct	3 ms	492 KB	Output is correct
7	Correct	1 ms	292 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	4 ms	460 KB	Output is correct
10	Correct	3 ms	460 KB	Output is correct
11	Correct	3 ms	460 KB	Output is correct
12	Correct	3 ms	488 KB	Output is correct
13	Correct	27 ms	3256 KB	Output is correct
14	Correct	27 ms	3216 KB	Output is correct
15	Correct	29 ms	3160 KB	Output is correct
16	Correct	36 ms	3280 KB	Output is correct
17	Correct	2 ms	344 KB	Output is correct
18	Correct	3 ms	460 KB	Output is correct
19	Correct	2 ms	324 KB	Output is correct
20	Correct	27 ms	2608 KB	Output is correct
21	Correct	29 ms	3144 KB	Output is correct
22	Correct	29 ms	2664 KB	Output is correct
23	Correct	31 ms	3120 KB	Output is correct

Subtask #7

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	2 ms	716 KB	Output is correct
7	Correct	1 ms	204 KB	Output is correct
8	Correct	1 ms	296 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	3 ms	512 KB	Output is correct
11	Correct	28 ms	3236 KB	Output is correct
12	Correct	645 ms	55704 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	296 KB	Output is correct
16	Correct	2 ms	460 KB	Output is correct
17	Correct	24 ms	2480 KB	Output is correct
18	Correct	598 ms	56676 KB	Output is correct
19	Correct	652 ms	57180 KB	Output is correct
20	Correct	4 ms	460 KB	Output is correct
21	Correct	1 ms	204 KB	Output is correct
22	Correct	1 ms	204 KB	Output is correct
23	Correct	1 ms	204 KB	Output is correct
24	Correct	7 ms	844 KB	Output is correct
25	Correct	21 ms	2088 KB	Output is correct
26	Correct	21 ms	2124 KB	Output is correct
27	Correct	651 ms	57752 KB	Output is correct
28	Correct	1 ms	204 KB	Output is correct
29	Correct	1 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	3 ms	460 KB	Output is correct
32	Correct	32 ms	3268 KB	Output is correct
33	Correct	6 ms	716 KB	Output is correct
34	Correct	7 ms	1012 KB	Output is correct
35	Correct	870 ms	57248 KB	Output is correct
36	Correct	791 ms	53544 KB	Output is correct
37	Correct	778 ms	53540 KB	Output is correct
38	Correct	859 ms	57152 KB	Output is correct
39	Correct	1 ms	204 KB	Output is correct
40	Correct	3 ms	428 KB	Output is correct
41	Correct	3 ms	460 KB	Output is correct
42	Correct	3 ms	460 KB	Output is correct
43	Correct	3 ms	460 KB	Output is correct
44	Correct	3 ms	492 KB	Output is correct
45	Correct	1 ms	292 KB	Output is correct
46	Correct	1 ms	204 KB	Output is correct
47	Correct	4 ms	460 KB	Output is correct
48	Correct	3 ms	460 KB	Output is correct
49	Correct	3 ms	460 KB	Output is correct
50	Correct	3 ms	488 KB	Output is correct
51	Correct	27 ms	3256 KB	Output is correct
52	Correct	27 ms	3216 KB	Output is correct
53	Correct	29 ms	3160 KB	Output is correct
54	Correct	36 ms	3280 KB	Output is correct
55	Correct	2 ms	344 KB	Output is correct
56	Correct	3 ms	460 KB	Output is correct
57	Correct	2 ms	324 KB	Output is correct
58	Correct	27 ms	2608 KB	Output is correct
59	Correct	29 ms	3144 KB	Output is correct
60	Correct	29 ms	2664 KB	Output is correct
61	Correct	31 ms	3120 KB	Output is correct
62	Correct	71 ms	8408 KB	Output is correct
63	Correct	71 ms	8312 KB	Output is correct
64	Correct	89 ms	8516 KB	Output is correct
65	Correct	322 ms	33448 KB	Output is correct
66	Correct	359 ms	33604 KB	Output is correct
67	Correct	7 ms	964 KB	Output is correct
68	Correct	6 ms	716 KB	Output is correct
69	Correct	639 ms	72220 KB	Output is correct
70	Correct	736 ms	72932 KB	Output is correct
71	Correct	843 ms	64220 KB	Output is correct
72	Correct	708 ms	52368 KB	Output is correct
73	Correct	814 ms	52500 KB	Output is correct
74	Correct	653 ms	58992 KB	Output is correct
75	Correct	719 ms	51168 KB	Output is correct