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Submission #989368

# Submission time Handle Problem Language Result Execution time Memory
989368 2024-05-28T05:07:28 Z muhammad Feast (NOI19_feast) C++17
100 / 100
 92 ms 10532 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pli pair<ll, int>

const int mxN=3e5;
int n, k;
ll a[mxN+1], lb, rb=3e14;
pli dp[mxN+1];

pli cdp(ll x) {
	memset(dp, 0, sizeof(dp));
	pli ms{};
	for(int i=0; i<n; ++i) {
		pli cs{dp[i].first-a[i], dp[i].second};
		if(cs.first^ms.first?cs.first>ms.first:cs.second<ms.second)
			ms=cs;
		pli nd{ms.first-x+a[i+1], ms.second+1};
		dp[i+1]=(nd.first^dp[i].first?nd.first>dp[i].first:nd.second<dp[i].second)?nd:dp[i];
	}
	return dp[n];
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	cin >> n >> k;
	for(int i=0; i<n; ++i)
		cin >> a[i+1], a[i+1]+=a[i];
	while(lb<rb) {
		ll mb=(lb+rb)/2;
		if(cdp(mb).second<=k)
			rb=mb;
		else
			lb=mb+1;
	}
	pli r=cdp(lb);
	cout << r.first+k*lb;
}

Compilation message

feast.cpp: In function 'std::pair<long long int, int> cdp(long long int)':
feast.cpp:13:26: warning: 'void* memset(void*, int, size_t)' clearing an object of type 'struct std::pair<long long int, int>' with no trivial copy-assignment; use assignment instead [-Wclass-memaccess]
   13 |  memset(dp, 0, sizeof(dp));
      |                          ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from feast.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:211:12: note: 'struct std::pair<long long int, int>' declared here
  211 |     struct pair
      |            ^~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 7404 KB Output is correct
2 Correct 63 ms 10064 KB Output is correct
3 Correct 63 ms 10320 KB Output is correct
4 Correct 62 ms 10328 KB Output is correct
5 Correct 62 ms 10076 KB Output is correct
6 Correct 61 ms 10064 KB Output is correct
7 Correct 61 ms 10208 KB Output is correct
8 Correct 64 ms 10136 KB Output is correct
9 Correct 63 ms 10220 KB Output is correct
10 Correct 61 ms 10280 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 7260 KB Output is correct
2 Correct 47 ms 8536 KB Output is correct
3 Correct 47 ms 8292 KB Output is correct
4 Correct 50 ms 8532 KB Output is correct
5 Correct 62 ms 10068 KB Output is correct
6 Correct 49 ms 8532 KB Output is correct
7 Correct 53 ms 8540 KB Output is correct
8 Correct 62 ms 10312 KB Output is correct
9 Correct 60 ms 9980 KB Output is correct
10 Correct 52 ms 8540 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 7248 KB Output is correct
2 Correct 55 ms 10304 KB Output is correct
3 Correct 53 ms 10332 KB Output is correct
4 Correct 52 ms 10324 KB Output is correct
5 Correct 53 ms 10340 KB Output is correct
6 Correct 52 ms 10320 KB Output is correct
7 Correct 53 ms 10320 KB Output is correct
8 Correct 53 ms 10324 KB Output is correct
9 Correct 53 ms 10532 KB Output is correct
10 Correct 53 ms 10360 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4956 KB Output is correct
2 Correct 6 ms 5160 KB Output is correct
3 Correct 6 ms 4952 KB Output is correct
4 Correct 6 ms 4956 KB Output is correct
5 Correct 7 ms 4956 KB Output is correct
6 Correct 6 ms 4956 KB Output is correct
7 Correct 7 ms 5068 KB Output is correct
8 Correct 7 ms 4956 KB Output is correct
9 Correct 6 ms 5160 KB Output is correct
10 Correct 7 ms 4956 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4956 KB Output is correct
2 Correct 6 ms 5160 KB Output is correct
3 Correct 6 ms 4952 KB Output is correct
4 Correct 6 ms 4956 KB Output is correct
5 Correct 7 ms 4956 KB Output is correct
6 Correct 6 ms 4956 KB Output is correct
7 Correct 7 ms 5068 KB Output is correct
8 Correct 7 ms 4956 KB Output is correct
9 Correct 6 ms 5160 KB Output is correct
10 Correct 7 ms 4956 KB Output is correct
11 Correct 6 ms 4956 KB Output is correct
12 Correct 7 ms 4956 KB Output is correct
13 Correct 7 ms 4956 KB Output is correct
14 Correct 6 ms 4956 KB Output is correct
15 Correct 6 ms 5164 KB Output is correct
16 Correct 7 ms 4956 KB Output is correct
17 Correct 6 ms 5068 KB Output is correct
18 Correct 6 ms 5168 KB Output is correct
19 Correct 6 ms 4952 KB Output is correct
20 Correct 8 ms 5212 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4956 KB Output is correct
2 Correct 6 ms 5160 KB Output is correct
3 Correct 6 ms 4952 KB Output is correct
4 Correct 6 ms 4956 KB Output is correct
5 Correct 7 ms 4956 KB Output is correct
6 Correct 6 ms 4956 KB Output is correct
7 Correct 7 ms 5068 KB Output is correct
8 Correct 7 ms 4956 KB Output is correct
9 Correct 6 ms 5160 KB Output is correct
10 Correct 7 ms 4956 KB Output is correct
11 Correct 6 ms 4956 KB Output is correct
12 Correct 7 ms 4956 KB Output is correct
13 Correct 7 ms 4956 KB Output is correct
14 Correct 6 ms 4956 KB Output is correct
15 Correct 6 ms 5164 KB Output is correct
16 Correct 7 ms 4956 KB Output is correct
17 Correct 6 ms 5068 KB Output is correct
18 Correct 6 ms 5168 KB Output is correct
19 Correct 6 ms 4952 KB Output is correct
20 Correct 8 ms 5212 KB Output is correct
21 Correct 7 ms 4956 KB Output is correct
22 Correct 8 ms 5196 KB Output is correct
23 Correct 7 ms 4956 KB Output is correct
24 Correct 7 ms 5200 KB Output is correct
25 Correct 7 ms 4956 KB Output is correct
26 Correct 7 ms 5200 KB Output is correct
27 Correct 7 ms 4956 KB Output is correct
28 Correct 7 ms 4956 KB Output is correct
29 Correct 6 ms 4956 KB Output is correct
30 Correct 7 ms 4956 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 7404 KB Output is correct
2 Correct 63 ms 10064 KB Output is correct
3 Correct 63 ms 10320 KB Output is correct
4 Correct 62 ms 10328 KB Output is correct
5 Correct 62 ms 10076 KB Output is correct
6 Correct 61 ms 10064 KB Output is correct
7 Correct 61 ms 10208 KB Output is correct
8 Correct 64 ms 10136 KB Output is correct
9 Correct 63 ms 10220 KB Output is correct
10 Correct 61 ms 10280 KB Output is correct
11 Correct 43 ms 7260 KB Output is correct
12 Correct 47 ms 8536 KB Output is correct
13 Correct 47 ms 8292 KB Output is correct
14 Correct 50 ms 8532 KB Output is correct
15 Correct 62 ms 10068 KB Output is correct
16 Correct 49 ms 8532 KB Output is correct
17 Correct 53 ms 8540 KB Output is correct
18 Correct 62 ms 10312 KB Output is correct
19 Correct 60 ms 9980 KB Output is correct
20 Correct 52 ms 8540 KB Output is correct
21 Correct 51 ms 7248 KB Output is correct
22 Correct 55 ms 10304 KB Output is correct
23 Correct 53 ms 10332 KB Output is correct
24 Correct 52 ms 10324 KB Output is correct
25 Correct 53 ms 10340 KB Output is correct
26 Correct 52 ms 10320 KB Output is correct
27 Correct 53 ms 10320 KB Output is correct
28 Correct 53 ms 10324 KB Output is correct
29 Correct 53 ms 10532 KB Output is correct
30 Correct 53 ms 10360 KB Output is correct
31 Correct 6 ms 4956 KB Output is correct
32 Correct 6 ms 5160 KB Output is correct
33 Correct 6 ms 4952 KB Output is correct
34 Correct 6 ms 4956 KB Output is correct
35 Correct 7 ms 4956 KB Output is correct
36 Correct 6 ms 4956 KB Output is correct
37 Correct 7 ms 5068 KB Output is correct
38 Correct 7 ms 4956 KB Output is correct
39 Correct 6 ms 5160 KB Output is correct
40 Correct 7 ms 4956 KB Output is correct
41 Correct 6 ms 4956 KB Output is correct
42 Correct 7 ms 4956 KB Output is correct
43 Correct 7 ms 4956 KB Output is correct
44 Correct 6 ms 4956 KB Output is correct
45 Correct 6 ms 5164 KB Output is correct
46 Correct 7 ms 4956 KB Output is correct
47 Correct 6 ms 5068 KB Output is correct
48 Correct 6 ms 5168 KB Output is correct
49 Correct 6 ms 4952 KB Output is correct
50 Correct 8 ms 5212 KB Output is correct
51 Correct 7 ms 4956 KB Output is correct
52 Correct 8 ms 5196 KB Output is correct
53 Correct 7 ms 4956 KB Output is correct
54 Correct 7 ms 5200 KB Output is correct
55 Correct 7 ms 4956 KB Output is correct
56 Correct 7 ms 5200 KB Output is correct
57 Correct 7 ms 4956 KB Output is correct
58 Correct 7 ms 4956 KB Output is correct
59 Correct 6 ms 4956 KB Output is correct
60 Correct 7 ms 4956 KB Output is correct
61 Correct 83 ms 10344 KB Output is correct
62 Correct 92 ms 10496 KB Output is correct
63 Correct 61 ms 10388 KB Output is correct
64 Correct 83 ms 10480 KB Output is correct
65 Correct 76 ms 10324 KB Output is correct
66 Correct 74 ms 10332 KB Output is correct
67 Correct 73 ms 10400 KB Output is correct
68 Correct 53 ms 10320 KB Output is correct
69 Correct 54 ms 10324 KB Output is correct
70 Correct 52 ms 10228 KB Output is correct