Submission #530105

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
530105	2022-02-24T15:35:52 Z	buidangnguyen05	Art Exhibition (JOI18_art)	C++14	100 / 100	188 ms	28736 KB

/* input

*/

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

typedef long long ll;
const int N = 5e5 + 10;
ll pref[N], mx[N];
pair<ll, int> a[N];

signed main() {
	cin.tie(0)->sync_with_stdio(0);
	if (fopen("task.inp", "r")) {
		freopen("task.inp", "r", stdin);
		freopen("task.out", "w", stdout);
	}

	int n; cin >> n;
	for (int i = 1; i <= n; ++i) cin >> a[i].first >> a[i].second;
	
	sort(a + 1, a + n + 1);
	for (int i = 1; i <= n; ++i) pref[i] = pref[i - 1] + a[i].second;
	
	memset(mx, -127, sizeof(mx));
	for (int i = n; i; --i) mx[i] = max(mx[i + 1], pref[i] - a[i].first);
	ll res = 0;
	for (int i = 1; i <= n; ++i) res = max(res, a[i].first - pref[i - 1] + mx[i]);

	cout << res;
}

Compilation message

art.cpp: In function 'int main()':
art.cpp:16:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |   freopen("task.inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
art.cpp:17:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |   freopen("task.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	4172 KB	Output is correct
2	Correct	2 ms	4152 KB	Output is correct
3	Correct	2 ms	4172 KB	Output is correct
4	Correct	2 ms	4160 KB	Output is correct
5	Correct	2 ms	4172 KB	Output is correct
6	Correct	2 ms	4152 KB	Output is correct
7	Correct	2 ms	4172 KB	Output is correct
8	Correct	3 ms	4172 KB	Output is correct
9	Correct	2 ms	4168 KB	Output is correct
10	Correct	2 ms	4172 KB	Output is correct
11	Correct	2 ms	4172 KB	Output is correct

Subtask #2
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	4172 KB	Output is correct
2	Correct	2 ms	4152 KB	Output is correct
3	Correct	2 ms	4172 KB	Output is correct
4	Correct	2 ms	4160 KB	Output is correct
5	Correct	2 ms	4172 KB	Output is correct
6	Correct	2 ms	4152 KB	Output is correct
7	Correct	2 ms	4172 KB	Output is correct
8	Correct	3 ms	4172 KB	Output is correct
9	Correct	2 ms	4168 KB	Output is correct
10	Correct	2 ms	4172 KB	Output is correct
11	Correct	2 ms	4172 KB	Output is correct
12	Correct	2 ms	4172 KB	Output is correct
13	Correct	2 ms	4172 KB	Output is correct
14	Correct	2 ms	4172 KB	Output is correct
15	Correct	2 ms	4172 KB	Output is correct
16	Correct	2 ms	4172 KB	Output is correct
17	Correct	2 ms	4172 KB	Output is correct
18	Correct	2 ms	4172 KB	Output is correct
19	Correct	2 ms	4172 KB	Output is correct
20	Correct	2 ms	4172 KB	Output is correct
21	Correct	2 ms	4172 KB	Output is correct
22	Correct	2 ms	4172 KB	Output is correct
23	Correct	2 ms	4172 KB	Output is correct
24	Correct	2 ms	4172 KB	Output is correct
25	Correct	2 ms	4172 KB	Output is correct
26	Correct	2 ms	4172 KB	Output is correct

Subtask #3
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	4172 KB	Output is correct
2	Correct	2 ms	4152 KB	Output is correct
3	Correct	2 ms	4172 KB	Output is correct
4	Correct	2 ms	4160 KB	Output is correct
5	Correct	2 ms	4172 KB	Output is correct
6	Correct	2 ms	4152 KB	Output is correct
7	Correct	2 ms	4172 KB	Output is correct
8	Correct	3 ms	4172 KB	Output is correct
9	Correct	2 ms	4168 KB	Output is correct
10	Correct	2 ms	4172 KB	Output is correct
11	Correct	2 ms	4172 KB	Output is correct
12	Correct	2 ms	4172 KB	Output is correct
13	Correct	2 ms	4172 KB	Output is correct
14	Correct	2 ms	4172 KB	Output is correct
15	Correct	2 ms	4172 KB	Output is correct
16	Correct	2 ms	4172 KB	Output is correct
17	Correct	2 ms	4172 KB	Output is correct
18	Correct	2 ms	4172 KB	Output is correct
19	Correct	2 ms	4172 KB	Output is correct
20	Correct	2 ms	4172 KB	Output is correct
21	Correct	2 ms	4172 KB	Output is correct
22	Correct	2 ms	4172 KB	Output is correct
23	Correct	2 ms	4172 KB	Output is correct
24	Correct	2 ms	4172 KB	Output is correct
25	Correct	2 ms	4172 KB	Output is correct
26	Correct	2 ms	4172 KB	Output is correct
27	Correct	4 ms	4408 KB	Output is correct
28	Correct	4 ms	4444 KB	Output is correct
29	Correct	3 ms	4476 KB	Output is correct
30	Correct	3 ms	4428 KB	Output is correct
31	Correct	5 ms	4444 KB	Output is correct
32	Correct	4 ms	4432 KB	Output is correct
33	Correct	4 ms	4484 KB	Output is correct
34	Correct	4 ms	4396 KB	Output is correct
35	Correct	4 ms	4428 KB	Output is correct
36	Correct	3 ms	4428 KB	Output is correct
37	Correct	4 ms	4432 KB	Output is correct
38	Correct	4 ms	4428 KB	Output is correct
39	Correct	3 ms	4436 KB	Output is correct
40	Correct	4 ms	4436 KB	Output is correct
41	Correct	3 ms	4428 KB	Output is correct
42	Correct	4 ms	4428 KB	Output is correct
43	Correct	4 ms	4408 KB	Output is correct
44	Correct	4 ms	4428 KB	Output is correct
45	Correct	4 ms	4428 KB	Output is correct
46	Correct	4 ms	4412 KB	Output is correct
47	Correct	4 ms	4404 KB	Output is correct
48	Correct	3 ms	4428 KB	Output is correct
49	Correct	4 ms	4428 KB	Output is correct
50	Correct	4 ms	4364 KB	Output is correct
51	Correct	4 ms	4440 KB	Output is correct

Subtask #4
50.0 / 50.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	4172 KB	Output is correct
2	Correct	2 ms	4152 KB	Output is correct
3	Correct	2 ms	4172 KB	Output is correct
4	Correct	2 ms	4160 KB	Output is correct
5	Correct	2 ms	4172 KB	Output is correct
6	Correct	2 ms	4152 KB	Output is correct
7	Correct	2 ms	4172 KB	Output is correct
8	Correct	3 ms	4172 KB	Output is correct
9	Correct	2 ms	4168 KB	Output is correct
10	Correct	2 ms	4172 KB	Output is correct
11	Correct	2 ms	4172 KB	Output is correct
12	Correct	2 ms	4172 KB	Output is correct
13	Correct	2 ms	4172 KB	Output is correct
14	Correct	2 ms	4172 KB	Output is correct
15	Correct	2 ms	4172 KB	Output is correct
16	Correct	2 ms	4172 KB	Output is correct
17	Correct	2 ms	4172 KB	Output is correct
18	Correct	2 ms	4172 KB	Output is correct
19	Correct	2 ms	4172 KB	Output is correct
20	Correct	2 ms	4172 KB	Output is correct
21	Correct	2 ms	4172 KB	Output is correct
22	Correct	2 ms	4172 KB	Output is correct
23	Correct	2 ms	4172 KB	Output is correct
24	Correct	2 ms	4172 KB	Output is correct
25	Correct	2 ms	4172 KB	Output is correct
26	Correct	2 ms	4172 KB	Output is correct
27	Correct	4 ms	4408 KB	Output is correct
28	Correct	4 ms	4444 KB	Output is correct
29	Correct	3 ms	4476 KB	Output is correct
30	Correct	3 ms	4428 KB	Output is correct
31	Correct	5 ms	4444 KB	Output is correct
32	Correct	4 ms	4432 KB	Output is correct
33	Correct	4 ms	4484 KB	Output is correct
34	Correct	4 ms	4396 KB	Output is correct
35	Correct	4 ms	4428 KB	Output is correct
36	Correct	3 ms	4428 KB	Output is correct
37	Correct	4 ms	4432 KB	Output is correct
38	Correct	4 ms	4428 KB	Output is correct
39	Correct	3 ms	4436 KB	Output is correct
40	Correct	4 ms	4436 KB	Output is correct
41	Correct	3 ms	4428 KB	Output is correct
42	Correct	4 ms	4428 KB	Output is correct
43	Correct	4 ms	4408 KB	Output is correct
44	Correct	4 ms	4428 KB	Output is correct
45	Correct	4 ms	4428 KB	Output is correct
46	Correct	4 ms	4412 KB	Output is correct
47	Correct	4 ms	4404 KB	Output is correct
48	Correct	3 ms	4428 KB	Output is correct
49	Correct	4 ms	4428 KB	Output is correct
50	Correct	4 ms	4364 KB	Output is correct
51	Correct	4 ms	4440 KB	Output is correct
52	Correct	165 ms	28552 KB	Output is correct
53	Correct	172 ms	28616 KB	Output is correct
54	Correct	170 ms	28544 KB	Output is correct
55	Correct	188 ms	28616 KB	Output is correct
56	Correct	168 ms	28736 KB	Output is correct
57	Correct	164 ms	28564 KB	Output is correct
58	Correct	171 ms	28532 KB	Output is correct
59	Correct	174 ms	28548 KB	Output is correct
60	Correct	169 ms	28524 KB	Output is correct
61	Correct	172 ms	28392 KB	Output is correct
62	Correct	165 ms	28612 KB	Output is correct
63	Correct	169 ms	28532 KB	Output is correct
64	Correct	170 ms	28548 KB	Output is correct
65	Correct	180 ms	28616 KB	Output is correct
66	Correct	169 ms	28616 KB	Output is correct
67	Correct	182 ms	28568 KB	Output is correct
68	Correct	169 ms	28532 KB	Output is correct

Submission #530105

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 20.0 / 20.0

Subtask #3 20.0 / 20.0

Subtask #4 50.0 / 50.0

Subtask #1
10.0 / 10.0

Subtask #2
20.0 / 20.0

Subtask #3
20.0 / 20.0

Subtask #4
50.0 / 50.0