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Submission #926370

# Submission time Handle Problem Language Result Execution time Memory
926370 2024-02-12T20:44:27 Z Ludissey Hacker (BOI15_hac) C++14
100 / 100
 57 ms 5212 KB 
#include <bits/stdc++.h>

int main() {
    std::ios_base::sync_with_stdio(false); std::cin.tie(nullptr);
	int n; scanf("%d",&n);
    int half=((n+1)/2);
    std::vector<int> v(n*2,0);
    for (int i = 0; i < (int)v.size(); i++) {
        if(i<n) {
            scanf("%d",&v[i]);
            v[i+n]=v[i];
        }
        v[i]+=v[i-1];
    }
    std::deque<int> queue;
    for (int i = 0; i < half; i++)
    {
        while(!queue.empty()&&v[queue.back()+half-1]-v[queue.back()-1]>(v[i+half-1]-v[i-1])) queue.pop_back();
        queue.push_back(i);
    }
    int outp=v[queue.front()+half-1]-v[queue.front()-1];
    for (int i = half; i < (n*2)-half; i++)
    {
        if(!queue.empty()&&queue.front()==i-half) queue.pop_front();
        while(!queue.empty()&&v[queue.back()+half-1]-v[queue.back()-1]>(v[i+half-1]-v[i-1])) queue.pop_back();
        queue.push_back(i);
        outp=std::max(v[queue.front()+half-1]-v[queue.front()-1], outp);
    }
    std::printf("%d\n", outp);
    return 0;
}

Compilation message

hac.cpp: In function 'int main()':
hac.cpp:5:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 |  int n; scanf("%d",&n);
      |         ~~~~~^~~~~~~~~
hac.cpp:10:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |             scanf("%d",&v[i]);
      |             ~~~~~^~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 376 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 376 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 7 ms 1096 KB Output is correct
5 Correct 17 ms 1880 KB Output is correct
6 Correct 25 ms 2396 KB Output is correct
7 Correct 27 ms 2652 KB Output is correct
8 Correct 57 ms 4184 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 376 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 7 ms 1096 KB Output is correct
36 Correct 17 ms 1880 KB Output is correct
37 Correct 25 ms 2396 KB Output is correct
38 Correct 27 ms 2652 KB Output is correct
39 Correct 57 ms 4184 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 2 ms 604 KB Output is correct
42 Correct 3 ms 604 KB Output is correct
43 Correct 18 ms 2032 KB Output is correct
44 Correct 44 ms 4368 KB Output is correct
45 Correct 9 ms 1112 KB Output is correct
46 Correct 26 ms 2652 KB Output is correct
47 Correct 45 ms 4184 KB Output is correct
48 Correct 35 ms 5204 KB Output is correct
49 Correct 36 ms 5212 KB Output is correct
50 Correct 36 ms 5200 KB Output is correct