oj.uz

Submission #627147

# Submission time Handle Problem Language Result Execution time Memory
627147 2022-08-12T09:15:13 Z boris_mihov Art Exhibition (JOI18_art) C++17
100 / 100
 266 ms 36480 KB 
#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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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