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Submission #994480

# Submission time Handle Problem Language Result Execution time Memory
994480 2024-06-07T17:13:23 Z idiotcomputer Feast (NOI19_feast) C++11
100 / 100
 105 ms 4676 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long int 
#define pii pair<ll,ll>
#define f first
#define s second

const int mxN = 3e5;
int n,k;
int a[mxN];

pii test(ll v){
    pii dp[2];
    pii dp2[2];
    dp[0] = {0,0};
    dp[1] = {0,0};
    for (int i = 0; i < n; i++){
        dp2[0] = max(dp[0],(pii){dp[1].f-v,dp[1].s+1});
        dp2[1] = max((pii) {dp[0].f+a[i],dp[0].s}, (pii) {dp[1].f+a[i],dp[1].s});
        swap(dp2,dp);
    }
    dp[1] = (pii) {dp[1].f-v,dp[1].s+1};
    return max(dp[0],dp[1]);
}


int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    
    cin >> n >> k;
    for (int i = 0; i < n; i++) cin >> a[i];
    
    ll l = 0;
    ll r = 1e15;
    ll c;
    while (r-l>1){
        c = (l+r)/2;
        if(test(c).s<k) r = c;
        else l = c;
    }
    pii t = test(l);
   // cout << l << " -=  " << t.f << " " << t.s << '\n';
    cout << t.f + k*l << "\n";
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 1368 KB Output is correct
2 Correct 35 ms 1372 KB Output is correct
3 Correct 36 ms 1628 KB Output is correct
4 Correct 36 ms 1368 KB Output is correct
5 Correct 34 ms 1372 KB Output is correct
6 Correct 35 ms 1372 KB Output is correct
7 Correct 34 ms 1372 KB Output is correct
8 Correct 36 ms 1372 KB Output is correct
9 Correct 35 ms 1372 KB Output is correct
10 Correct 34 ms 1368 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 1372 KB Output is correct
2 Correct 48 ms 1368 KB Output is correct
3 Correct 34 ms 1368 KB Output is correct
4 Correct 30 ms 2656 KB Output is correct
5 Correct 43 ms 4324 KB Output is correct
6 Correct 37 ms 2652 KB Output is correct
7 Correct 30 ms 2652 KB Output is correct
8 Correct 46 ms 4444 KB Output is correct
9 Correct 46 ms 4180 KB Output is correct
10 Correct 38 ms 2652 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 1444 KB Output is correct
2 Correct 62 ms 4608 KB Output is correct
3 Correct 62 ms 4440 KB Output is correct
4 Correct 62 ms 4432 KB Output is correct
5 Correct 76 ms 4660 KB Output is correct
6 Correct 57 ms 4440 KB Output is correct
7 Correct 61 ms 4444 KB Output is correct
8 Correct 58 ms 4564 KB Output is correct
9 Correct 60 ms 4444 KB Output is correct
10 Correct 67 ms 4432 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 460 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 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

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 460 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 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 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 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 1 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 464 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 460 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 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 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 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 1 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 464 KB Output is correct
21 Correct 1 ms 512 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 496 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 1368 KB Output is correct
2 Correct 35 ms 1372 KB Output is correct
3 Correct 36 ms 1628 KB Output is correct
4 Correct 36 ms 1368 KB Output is correct
5 Correct 34 ms 1372 KB Output is correct
6 Correct 35 ms 1372 KB Output is correct
7 Correct 34 ms 1372 KB Output is correct
8 Correct 36 ms 1372 KB Output is correct
9 Correct 35 ms 1372 KB Output is correct
10 Correct 34 ms 1368 KB Output is correct
11 Correct 39 ms 1372 KB Output is correct
12 Correct 48 ms 1368 KB Output is correct
13 Correct 34 ms 1368 KB Output is correct
14 Correct 30 ms 2656 KB Output is correct
15 Correct 43 ms 4324 KB Output is correct
16 Correct 37 ms 2652 KB Output is correct
17 Correct 30 ms 2652 KB Output is correct
18 Correct 46 ms 4444 KB Output is correct
19 Correct 46 ms 4180 KB Output is correct
20 Correct 38 ms 2652 KB Output is correct
21 Correct 59 ms 1444 KB Output is correct
22 Correct 62 ms 4608 KB Output is correct
23 Correct 62 ms 4440 KB Output is correct
24 Correct 62 ms 4432 KB Output is correct
25 Correct 76 ms 4660 KB Output is correct
26 Correct 57 ms 4440 KB Output is correct
27 Correct 61 ms 4444 KB Output is correct
28 Correct 58 ms 4564 KB Output is correct
29 Correct 60 ms 4444 KB Output is correct
30 Correct 67 ms 4432 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 460 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 344 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 344 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 1 ms 464 KB Output is correct
51 Correct 1 ms 512 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 1 ms 496 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 88 ms 4436 KB Output is correct
62 Correct 85 ms 4676 KB Output is correct
63 Correct 68 ms 4440 KB Output is correct
64 Correct 86 ms 4432 KB Output is correct
65 Correct 105 ms 4444 KB Output is correct
66 Correct 87 ms 4432 KB Output is correct
67 Correct 85 ms 4436 KB Output is correct
68 Correct 62 ms 4436 KB Output is correct
69 Correct 63 ms 4440 KB Output is correct
70 Correct 58 ms 4480 KB Output is correct