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Submission #730169

# Submission time Handle Problem Language Result Execution time Memory
730169 2023-04-25T11:23:59 Z PanosPask Hacker (BOI15_hac) C++14
100 / 100
 70 ms 13516 KB 
#include <bits/stdc++.h>

using namespace std;

int n;
vector<int> v;

//s[i] is the sum of the numbers from i - len + 1 to i
vector<int> s;

deque<int> sliding_minimum;

vector<int> minimum_segment;

int main(void)
{
    scanf("%d", &n);
    v.resize(2 * n);
    s.resize(2 * n);
    minimum_segment.assign(n, INT_MAX);
    for (int i = 0; i < n; i++) {
        scanf("%d", &v[i]);
        v[n + i] = v[i];
    }

    int len = n / 2 + n % 2;
    int cur_s = 0;
    for (int i = 0; i < len - 1; i++)
        cur_s += v[i];

    for (int i = len - 1; i < 2 * n; i++) {
        cur_s += v[i];
        s[i] = cur_s;
        while (!sliding_minimum.empty() && sliding_minimum.back() > s[i]) {
            sliding_minimum.pop_back();
        }
        sliding_minimum.push_back(s[i]);

        // Remove v[i - len + 1]
        int rm = i - len + 1;
        minimum_segment[rm % n] = min(minimum_segment[rm % n], sliding_minimum.front());

        if (s[rm] == sliding_minimum.front())
            sliding_minimum.pop_front();

        cur_s -= v[rm];
    }

    int ans = 0;
    for (int i = 0; i < n; i++)
        ans = max(ans, minimum_segment[i]);

    printf("%d\n", ans);
    return 0;
}

Compilation message

hac.cpp: In function 'int main()':
hac.cpp:17:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
hac.cpp:22:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         scanf("%d", &v[i]);
      |         ~~~~~^~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 320 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 296 KB Output is correct
16 Correct 1 ms 300 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 320 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 296 KB Output is correct
16 Correct 1 ms 300 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 368 KB Output is correct
23 Correct 1 ms 312 KB Output is correct
24 Correct 1 ms 308 KB Output is correct
25 Correct 1 ms 316 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 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 0 ms 296 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 10 ms 2132 KB Output is correct
5 Correct 24 ms 4968 KB Output is correct
6 Correct 32 ms 6208 KB Output is correct
7 Correct 41 ms 7532 KB Output is correct
8 Correct 61 ms 12140 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 320 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 296 KB Output is correct
16 Correct 1 ms 300 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 368 KB Output is correct
23 Correct 1 ms 312 KB Output is correct
24 Correct 1 ms 308 KB Output is correct
25 Correct 1 ms 316 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 ms 296 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 10 ms 2132 KB Output is correct
36 Correct 24 ms 4968 KB Output is correct
37 Correct 32 ms 6208 KB Output is correct
38 Correct 41 ms 7532 KB Output is correct
39 Correct 61 ms 12140 KB Output is correct
40 Correct 2 ms 468 KB Output is correct
41 Correct 4 ms 696 KB Output is correct
42 Correct 5 ms 980 KB Output is correct
43 Correct 26 ms 5104 KB Output is correct
44 Correct 70 ms 12364 KB Output is correct
45 Correct 12 ms 2612 KB Output is correct
46 Correct 36 ms 7436 KB Output is correct
47 Correct 60 ms 12252 KB Output is correct
48 Correct 55 ms 13516 KB Output is correct
49 Correct 51 ms 12680 KB Output is correct
50 Correct 56 ms 12636 KB Output is correct