답안 #627147

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
627147	2022-08-12T09:15:13 Z	boris_mihov	Art Exhibition (JOI18_art)	C++17	100 / 100	266 ms	36480 KB

art

#include <algorithm>
#include <iostream>
#include <numeric>
#include <cassert>
#include <vector>
#include <cmath>

typedef long long llong;
const int MAXN = 500000 + 10;
const llong INF = 1e16;

int n;
llong idx[MAXN];
llong a[MAXN], b[MAXN];
llong a2[MAXN], b2[MAXN];
llong prefixB[MAXN];
void solve()
{
    std::iota(idx + 1, idx + 1 + n, 1);
    std::sort(idx + 1, idx + 1 + n, [&](int x, int y)
    {
        return std::make_pair(a[x], b[x]) < std::make_pair(a[y], b[y]);
    });

    for (int i = 1 ; i <= n ; ++i)
    {
        a2[i] = a[idx[i]];
        b2[i] = b[idx[i]];
    }

    for (int i = 1 ; i <= n ; ++i)
    {
        a[i] = a2[i];
        b[i] = b2[i];
    }

    llong ans = 0, max = -INF;
    for (int i = 1 ; i <= n ; ++i)
    {
        prefixB[i] = prefixB[i-1] + b[i];
        max = std::max(max, a[i] - prefixB[i-1]);
        ans = std::max(ans, prefixB[i] - a[i] + max);
    }

    std::cout << ans << '\n';
}

void read()
{
    std::cin >> n;
    for (int i = 1 ; i <= n ; ++i)
    {
        std::cin >> a[i] >> b[i];
    }
}

void fastIO()
{
    std::ios_base :: sync_with_stdio(0);
    std::cout.tie(nullptr);
    std::cin.tie(nullptr);
}

int main()
{
    fastIO();
    read();
    solve();

    return 0;
}

Subtask #1

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	372 KB	Output is correct
7	Correct	0 ms	336 KB	Output is correct
8	Correct	1 ms	328 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct

Subtask #2

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	372 KB	Output is correct
7	Correct	0 ms	336 KB	Output is correct
8	Correct	1 ms	328 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 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	332 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	332 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	340 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

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	372 KB	Output is correct
7	Correct	0 ms	336 KB	Output is correct
8	Correct	1 ms	328 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 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	332 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	332 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	340 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	2 ms	724 KB	Output is correct
28	Correct	4 ms	720 KB	Output is correct
29	Correct	3 ms	724 KB	Output is correct
30	Correct	3 ms	724 KB	Output is correct
31	Correct	3 ms	724 KB	Output is correct
32	Correct	3 ms	676 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	724 KB	Output is correct
36	Correct	2 ms	628 KB	Output is correct
37	Correct	2 ms	724 KB	Output is correct
38	Correct	2 ms	724 KB	Output is correct
39	Correct	2 ms	628 KB	Output is correct
40	Correct	4 ms	724 KB	Output is correct
41	Correct	3 ms	724 KB	Output is correct
42	Correct	3 ms	724 KB	Output is correct
43	Correct	3 ms	724 KB	Output is correct
44	Correct	2 ms	724 KB	Output is correct
45	Correct	3 ms	724 KB	Output is correct
46	Correct	3 ms	724 KB	Output is correct
47	Correct	3 ms	724 KB	Output is correct
48	Correct	3 ms	724 KB	Output is correct
49	Correct	3 ms	724 KB	Output is correct
50	Correct	3 ms	664 KB	Output is correct
51	Correct	2 ms	668 KB	Output is correct

Subtask #4

50.0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	372 KB	Output is correct
7	Correct	0 ms	336 KB	Output is correct
8	Correct	1 ms	328 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 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	332 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	332 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	340 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	2 ms	724 KB	Output is correct
28	Correct	4 ms	720 KB	Output is correct
29	Correct	3 ms	724 KB	Output is correct
30	Correct	3 ms	724 KB	Output is correct
31	Correct	3 ms	724 KB	Output is correct
32	Correct	3 ms	676 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	724 KB	Output is correct
36	Correct	2 ms	628 KB	Output is correct
37	Correct	2 ms	724 KB	Output is correct
38	Correct	2 ms	724 KB	Output is correct
39	Correct	2 ms	628 KB	Output is correct
40	Correct	4 ms	724 KB	Output is correct
41	Correct	3 ms	724 KB	Output is correct
42	Correct	3 ms	724 KB	Output is correct
43	Correct	3 ms	724 KB	Output is correct
44	Correct	2 ms	724 KB	Output is correct
45	Correct	3 ms	724 KB	Output is correct
46	Correct	3 ms	724 KB	Output is correct
47	Correct	3 ms	724 KB	Output is correct
48	Correct	3 ms	724 KB	Output is correct
49	Correct	3 ms	724 KB	Output is correct
50	Correct	3 ms	664 KB	Output is correct
51	Correct	2 ms	668 KB	Output is correct
52	Correct	247 ms	36300 KB	Output is correct
53	Correct	251 ms	36448 KB	Output is correct
54	Correct	265 ms	36376 KB	Output is correct
55	Correct	232 ms	36424 KB	Output is correct
56	Correct	230 ms	36428 KB	Output is correct
57	Correct	247 ms	36480 KB	Output is correct
58	Correct	266 ms	36440 KB	Output is correct
59	Correct	239 ms	36436 KB	Output is correct
60	Correct	247 ms	36480 KB	Output is correct
61	Correct	227 ms	36260 KB	Output is correct
62	Correct	231 ms	36376 KB	Output is correct
63	Correct	236 ms	36376 KB	Output is correct
64	Correct	227 ms	36372 KB	Output is correct
65	Correct	247 ms	36372 KB	Output is correct
66	Correct	225 ms	36344 KB	Output is correct
67	Correct	257 ms	36440 KB	Output is correct
68	Correct	238 ms	36376 KB	Output is correct