Submission #753470

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
753470	2023-06-05T09:37:30 Z	IvanJ	Art Exhibition (JOI18_art)	C++17	100 / 100	223 ms	32676 KB

#include<bits/stdc++.h>

#define x first
#define y second
#define pb push_back
#define all(a) (a).begin(), (a).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> ii;

const int maxn = 5e5 + 5;

int n;
ll c[maxn];
ll pref[maxn];
ll maxi[maxn];

int main() {
	scanf("%d", &n);
	vector<pair<ll, int>> v;
	for(int i = 0;i < n;i++) {
		ll a;int b;
		scanf("%lld%d", &a, &b);
		v.pb({a, b});	
	}
	
	sort(all(v));
	for(int i = 0;i < n;i++) {
		c[i] = (ll)v[i].y - v[i].x;
		if(i) c[i] += v[i - 1].x;
		else c[i] += v[i].x;
	}
	
	pref[0] = c[0];
	for(int i = 1;i < n;i++)
		pref[i] = pref[i - 1] + c[i];
	
	maxi[n - 1] = pref[n - 1];
	for(int i = n - 2;i >= 0;i--) 
		maxi[i] = max(maxi[i + 1], pref[i]);
	
	ll ans = 0;
	for(int i = 0;i < n;i++) {
		ll sol = maxi[i];
		if(i) sol -= pref[i - 1];
		if(i) sol += v[i].x - v[i - 1].x;
		ans = max(ans, sol);
	}
	printf("%lld\n", ans);
	return 0;
}

Compilation message

art.cpp: In function 'int main()':
art.cpp:21:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
art.cpp:25:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |   scanf("%lld%d", &a, &b);
      |   ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	304 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	312 KB	Output is correct
7	Correct	1 ms	308 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	308 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct

Subtask #2
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	304 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	312 KB	Output is correct
7	Correct	1 ms	308 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	308 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	312 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	312 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	312 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct

Subtask #3
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	304 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	312 KB	Output is correct
7	Correct	1 ms	308 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	308 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	312 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	312 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	312 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	3 ms	724 KB	Output is correct
28	Correct	2 ms	708 KB	Output is correct
29	Correct	2 ms	724 KB	Output is correct
30	Correct	2 ms	724 KB	Output is correct
31	Correct	3 ms	700 KB	Output is correct
32	Correct	3 ms	724 KB	Output is correct
33	Correct	3 ms	724 KB	Output is correct
34	Correct	3 ms	724 KB	Output is correct
35	Correct	3 ms	708 KB	Output is correct
36	Correct	3 ms	724 KB	Output is correct
37	Correct	4 ms	680 KB	Output is correct
38	Correct	3 ms	768 KB	Output is correct
39	Correct	2 ms	724 KB	Output is correct
40	Correct	4 ms	688 KB	Output is correct
41	Correct	3 ms	724 KB	Output is correct
42	Correct	4 ms	724 KB	Output is correct
43	Correct	2 ms	724 KB	Output is correct
44	Correct	3 ms	724 KB	Output is correct
45	Correct	3 ms	724 KB	Output is correct
46	Correct	3 ms	776 KB	Output is correct
47	Correct	3 ms	768 KB	Output is correct
48	Correct	3 ms	688 KB	Output is correct
49	Correct	3 ms	724 KB	Output is correct
50	Correct	3 ms	724 KB	Output is correct
51	Correct	3 ms	684 KB	Output is correct

Subtask #4
50.0 / 50.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	304 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	312 KB	Output is correct
7	Correct	1 ms	308 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	308 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	312 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	312 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	312 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	3 ms	724 KB	Output is correct
28	Correct	2 ms	708 KB	Output is correct
29	Correct	2 ms	724 KB	Output is correct
30	Correct	2 ms	724 KB	Output is correct
31	Correct	3 ms	700 KB	Output is correct
32	Correct	3 ms	724 KB	Output is correct
33	Correct	3 ms	724 KB	Output is correct
34	Correct	3 ms	724 KB	Output is correct
35	Correct	3 ms	708 KB	Output is correct
36	Correct	3 ms	724 KB	Output is correct
37	Correct	4 ms	680 KB	Output is correct
38	Correct	3 ms	768 KB	Output is correct
39	Correct	2 ms	724 KB	Output is correct
40	Correct	4 ms	688 KB	Output is correct
41	Correct	3 ms	724 KB	Output is correct
42	Correct	4 ms	724 KB	Output is correct
43	Correct	2 ms	724 KB	Output is correct
44	Correct	3 ms	724 KB	Output is correct
45	Correct	3 ms	724 KB	Output is correct
46	Correct	3 ms	776 KB	Output is correct
47	Correct	3 ms	768 KB	Output is correct
48	Correct	3 ms	688 KB	Output is correct
49	Correct	3 ms	724 KB	Output is correct
50	Correct	3 ms	724 KB	Output is correct
51	Correct	3 ms	684 KB	Output is correct
52	Correct	223 ms	32560 KB	Output is correct
53	Correct	211 ms	32528 KB	Output is correct
54	Correct	215 ms	32548 KB	Output is correct
55	Correct	195 ms	32584 KB	Output is correct
56	Correct	199 ms	32556 KB	Output is correct
57	Correct	212 ms	32676 KB	Output is correct
58	Correct	197 ms	32652 KB	Output is correct
59	Correct	203 ms	32556 KB	Output is correct
60	Correct	195 ms	32632 KB	Output is correct
61	Correct	207 ms	32452 KB	Output is correct
62	Correct	190 ms	32584 KB	Output is correct
63	Correct	195 ms	32536 KB	Output is correct
64	Correct	203 ms	32604 KB	Output is correct
65	Correct	196 ms	32548 KB	Output is correct
66	Correct	198 ms	32656 KB	Output is correct
67	Correct	204 ms	32544 KB	Output is correct
68	Correct	202 ms	32548 KB	Output is correct

Submission #753470

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