oj.uz

Submission #1102622

# Submission time Handle Problem Language Result Execution time Memory
1102622 2024-10-18T13:10:20 Z coolsentenceidontremember Hacker (BOI15_hac) C++17
100 / 100
 295 ms 20300 KB 
/*


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*/



#include"bits/stdc++.h"
#define ll long long
#define ld long double
#define ff first
#define ss second
#define pii pair<int, int>
#define mp make_pair
#define make_rng mt19937 rng(chrono::steady_clock::now().time_since_epoch().count())
#define make_rng64 mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
using namespace std;

void setIO(string s = ""){
 ios_base::sync_with_stdio(false);
 cin.tie(nullptr);
 cout.tie(nullptr);
 if (!s.empty()){
	freopen((s+".in").c_str(), "r", stdin);
	freopen((s+".out").c_str(), "w", stdout);
	}
}

const double PI = acos(-1);

struct chash{
	const uint64_t C = uint64_t(2e18 * PI) + 71;
	const uint32_t random = chrono::steady_clock::now().time_since_epoch().count();
	size_t operator()(uint64_t x) const {
		return __builtin_bswap64((x^random)*C);
	}
};




int main(){
	setIO();
	int n;
	cin >> n;
	int k = (n+1)/2;
	vector<int> v(2*n+1);
	for (int i = 1; i <= n; i++){
		cin >> v[i];
		v[i+n] = v[i];
	}
	vector<int> min_range(n+1, INT_MAX);
	for (int i = 1; i <= 2*n; i++) v[i] += v[i-1];
	multiset<int> s;
	for (int i = 1; i <= 2*n; i++){
		if (i + k - 1 <= 2*n) s.insert(v[i+k-1] - v[i-1]);
		if (i > k) s.erase(s.find(v[i-1] - v[i-k-1]));
		int cur = ((i-1)%n) + 1;
		min_range[cur] = min(min_range[cur], *s.begin());
	}
	cout << *max_element(min_range.begin()+1, min_range.end());
}

Compilation message

hac.cpp: In function 'void setIO(std::string)':
hac.cpp:139:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  139 |  freopen((s+".in").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
hac.cpp:140:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  140 |  freopen((s+".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 508 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 504 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

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 508 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 504 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 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 2 ms 508 KB Output is correct
23 Correct 3 ms 596 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 3 ms 596 KB Output is correct
26 Correct 2 ms 596 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 2 ms 596 KB Output is correct
31 Correct 2 ms 596 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 2 ms 596 KB Output is correct
4 Correct 31 ms 3496 KB Output is correct
5 Correct 94 ms 8216 KB Output is correct
6 Correct 125 ms 10316 KB Output is correct
7 Correct 125 ms 12364 KB Output is correct
8 Correct 295 ms 20044 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 508 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 504 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 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 2 ms 508 KB Output is correct
23 Correct 3 ms 596 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 3 ms 596 KB Output is correct
26 Correct 2 ms 596 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 2 ms 596 KB Output is correct
31 Correct 2 ms 596 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 2 ms 596 KB Output is correct
35 Correct 31 ms 3496 KB Output is correct
36 Correct 94 ms 8216 KB Output is correct
37 Correct 125 ms 10316 KB Output is correct
38 Correct 125 ms 12364 KB Output is correct
39 Correct 295 ms 20044 KB Output is correct
40 Correct 4 ms 852 KB Output is correct
41 Correct 7 ms 1108 KB Output is correct
42 Correct 11 ms 1620 KB Output is correct
43 Correct 87 ms 8216 KB Output is correct
44 Correct 239 ms 20300 KB Output is correct
45 Correct 36 ms 4180 KB Output is correct
46 Correct 137 ms 12144 KB Output is correct
47 Correct 254 ms 20044 KB Output is correct
48 Correct 183 ms 20300 KB Output is correct
49 Correct 170 ms 19456 KB Output is correct
50 Correct 168 ms 19644 KB Output is correct