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Submission #1017575

# Submission time Handle Problem Language Result Execution time Memory
1017575 2024-07-09T08:56:09 Z ara_ara Feast (NOI19_feast) C++17
100 / 100
 136 ms 12172 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
const int inf=1e18;
const int maxn=3e5+5;
int n,k;
int a[maxn];
pair<int,int> alien(int lambda){
    pair<int,int> dp[n+5][2]={};
    dp[0][1].first=-inf;
    for(int i=1;i<=n;i++){
        dp[i][0]=max(dp[i-1][0],dp[i-1][1]);
        pair<int,int> p1={dp[i-1][0].first+a[i]-lambda,dp[i-1][0].second+1};
        pair<int,int> p2={dp[i-1][1].first+a[i],dp[i-1][1].second};
        dp[i][1]=max(p1,p2);
    }
    return max(dp[n][1],dp[n][0]);
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>k;
    for(int i=1;i<=n;i++) cin>>a[i];
    int l=0,r=inf;
    while(l<r){
        int lambda=(l+r+1)>>1;
        pair<int,int> tmp=alien(lambda);
        if(tmp.second>=k) l=lambda;
        else r=lambda-1;
    }
    cout<<alien(l).first+k*l;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 11608 KB Output is correct
2 Correct 68 ms 12024 KB Output is correct
3 Correct 69 ms 12124 KB Output is correct
4 Correct 72 ms 11868 KB Output is correct
5 Correct 72 ms 11908 KB Output is correct
6 Correct 69 ms 11604 KB Output is correct
7 Correct 68 ms 11612 KB Output is correct
8 Correct 69 ms 11868 KB Output is correct
9 Correct 72 ms 11840 KB Output is correct
10 Correct 68 ms 11868 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 11868 KB Output is correct
2 Correct 62 ms 12120 KB Output is correct
3 Correct 61 ms 11864 KB Output is correct
4 Correct 68 ms 11980 KB Output is correct
5 Correct 68 ms 11604 KB Output is correct
6 Correct 64 ms 11860 KB Output is correct
7 Correct 62 ms 12120 KB Output is correct
8 Correct 72 ms 11860 KB Output is correct
9 Correct 67 ms 11612 KB Output is correct
10 Correct 61 ms 12092 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 11860 KB Output is correct
2 Correct 93 ms 11860 KB Output is correct
3 Correct 99 ms 11924 KB Output is correct
4 Correct 92 ms 11856 KB Output is correct
5 Correct 95 ms 11868 KB Output is correct
6 Correct 95 ms 11856 KB Output is correct
7 Correct 94 ms 12116 KB Output is correct
8 Correct 92 ms 11856 KB Output is correct
9 Correct 99 ms 12120 KB Output is correct
10 Correct 99 ms 12108 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 344 KB Output is correct
7 Correct 0 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 344 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 344 KB Output is correct
7 Correct 0 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 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 344 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 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

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 344 KB Output is correct
7 Correct 0 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 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 344 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 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 1 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 344 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 77 ms 11608 KB Output is correct
2 Correct 68 ms 12024 KB Output is correct
3 Correct 69 ms 12124 KB Output is correct
4 Correct 72 ms 11868 KB Output is correct
5 Correct 72 ms 11908 KB Output is correct
6 Correct 69 ms 11604 KB Output is correct
7 Correct 68 ms 11612 KB Output is correct
8 Correct 69 ms 11868 KB Output is correct
9 Correct 72 ms 11840 KB Output is correct
10 Correct 68 ms 11868 KB Output is correct
11 Correct 61 ms 11868 KB Output is correct
12 Correct 62 ms 12120 KB Output is correct
13 Correct 61 ms 11864 KB Output is correct
14 Correct 68 ms 11980 KB Output is correct
15 Correct 68 ms 11604 KB Output is correct
16 Correct 64 ms 11860 KB Output is correct
17 Correct 62 ms 12120 KB Output is correct
18 Correct 72 ms 11860 KB Output is correct
19 Correct 67 ms 11612 KB Output is correct
20 Correct 61 ms 12092 KB Output is correct
21 Correct 95 ms 11860 KB Output is correct
22 Correct 93 ms 11860 KB Output is correct
23 Correct 99 ms 11924 KB Output is correct
24 Correct 92 ms 11856 KB Output is correct
25 Correct 95 ms 11868 KB Output is correct
26 Correct 95 ms 11856 KB Output is correct
27 Correct 94 ms 12116 KB Output is correct
28 Correct 92 ms 11856 KB Output is correct
29 Correct 99 ms 12120 KB Output is correct
30 Correct 99 ms 12108 KB Output is correct
31 Correct 0 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 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 344 KB Output is correct
37 Correct 0 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 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 344 KB Output is correct
44 Correct 0 ms 344 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 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 1 ms 348 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 344 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 120 ms 11860 KB Output is correct
62 Correct 122 ms 12172 KB Output is correct
63 Correct 106 ms 11844 KB Output is correct
64 Correct 127 ms 11864 KB Output is correct
65 Correct 124 ms 12028 KB Output is correct
66 Correct 130 ms 11868 KB Output is correct
67 Correct 136 ms 11860 KB Output is correct
68 Correct 96 ms 12080 KB Output is correct
69 Correct 93 ms 11868 KB Output is correct
70 Correct 92 ms 11604 KB Output is correct