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Submission #1017287

# Submission time Handle Problem Language Result Execution time Memory
1017287 2024-07-09T07:13:39 Z vjudge1 Feast (NOI19_feast) C++17
100 / 100
 115 ms 12368 KB 
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define int long long
// #define double long double
#define pb push_back
 
#define endl '\n'
#define fastIO ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
#define setmin(x,y) x=min((x),(y))
#define setmax(x,y) x=max((x),(y))
#define fi first
#define se second
 
mt19937 hdp(69420);
int rand(int l,int r){return l+((hdp()%(r-l+1))+r-l+1)%(r-l+1);}

const int N = 3e5 + 5;
const int mod = 1e9 + 7;
const int SQ = 450;
const int inf = 1e17;
const int L = 40;

int n,k,a[N];
pair<int,int> dp[N][2];

pair<int,int> solve(int lambda)
{
    for(int i=1;i<=n;i++)
    {
        dp[i][0]=max(dp[i-1][0],dp[i-1][1]);
        dp[i][1]=max(make_pair(dp[i-1][0].fi+a[i]-lambda,dp[i-1][0].se+1),make_pair(dp[i-1][1].fi+a[i],dp[i-1][1].se));
    }
    return max(dp[n][0],dp[n][1]);
}

signed main()
{
    fastIO
    // freopen("in.txt","r",stdin);
    // freopen("out.txt","w",stdout);
    dp[0][1]={-inf,0};
    cin>>n>>k;
    for(int i=1;i<=n;i++) cin>>a[i];
    int l=0,r=inf;
    while(l<r-1)
    {
        int m=l+r>>1;
        auto res=solve(m);
        if(res.se>k) l=m;
        else r=m;
    }
    auto res=solve(r);
    cout<<res.fi+res.se*r;
}

Compilation message

feast.cpp: In function 'int main()':
feast.cpp:49:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   49 |         int m=l+r>>1;
      |               ~^~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 84 ms 12124 KB Output is correct
2 Correct 86 ms 12120 KB Output is correct
3 Correct 85 ms 12180 KB Output is correct
4 Correct 85 ms 12164 KB Output is correct
5 Correct 85 ms 12120 KB Output is correct
6 Correct 84 ms 12120 KB Output is correct
7 Correct 83 ms 12032 KB Output is correct
8 Correct 84 ms 11956 KB Output is correct
9 Correct 83 ms 12116 KB Output is correct
10 Correct 85 ms 12124 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 12064 KB Output is correct
2 Correct 79 ms 12124 KB Output is correct
3 Correct 76 ms 12120 KB Output is correct
4 Correct 77 ms 12144 KB Output is correct
5 Correct 90 ms 11984 KB Output is correct
6 Correct 76 ms 12120 KB Output is correct
7 Correct 79 ms 12176 KB Output is correct
8 Correct 86 ms 12164 KB Output is correct
9 Correct 84 ms 12124 KB Output is correct
10 Correct 84 ms 12324 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 12124 KB Output is correct
2 Correct 85 ms 12124 KB Output is correct
3 Correct 88 ms 12116 KB Output is correct
4 Correct 85 ms 12100 KB Output is correct
5 Correct 87 ms 12112 KB Output is correct
6 Correct 88 ms 12124 KB Output is correct
7 Correct 96 ms 12120 KB Output is correct
8 Correct 87 ms 12112 KB Output is correct
9 Correct 90 ms 12368 KB Output is correct
10 Correct 89 ms 12172 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2444 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2444 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2444 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2524 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 84 ms 12124 KB Output is correct
2 Correct 86 ms 12120 KB Output is correct
3 Correct 85 ms 12180 KB Output is correct
4 Correct 85 ms 12164 KB Output is correct
5 Correct 85 ms 12120 KB Output is correct
6 Correct 84 ms 12120 KB Output is correct
7 Correct 83 ms 12032 KB Output is correct
8 Correct 84 ms 11956 KB Output is correct
9 Correct 83 ms 12116 KB Output is correct
10 Correct 85 ms 12124 KB Output is correct
11 Correct 75 ms 12064 KB Output is correct
12 Correct 79 ms 12124 KB Output is correct
13 Correct 76 ms 12120 KB Output is correct
14 Correct 77 ms 12144 KB Output is correct
15 Correct 90 ms 11984 KB Output is correct
16 Correct 76 ms 12120 KB Output is correct
17 Correct 79 ms 12176 KB Output is correct
18 Correct 86 ms 12164 KB Output is correct
19 Correct 84 ms 12124 KB Output is correct
20 Correct 84 ms 12324 KB Output is correct
21 Correct 87 ms 12124 KB Output is correct
22 Correct 85 ms 12124 KB Output is correct
23 Correct 88 ms 12116 KB Output is correct
24 Correct 85 ms 12100 KB Output is correct
25 Correct 87 ms 12112 KB Output is correct
26 Correct 88 ms 12124 KB Output is correct
27 Correct 96 ms 12120 KB Output is correct
28 Correct 87 ms 12112 KB Output is correct
29 Correct 90 ms 12368 KB Output is correct
30 Correct 89 ms 12172 KB Output is correct
31 Correct 0 ms 2392 KB Output is correct
32 Correct 0 ms 2396 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2444 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 0 ms 2396 KB Output is correct
37 Correct 0 ms 2396 KB Output is correct
38 Correct 0 ms 2396 KB Output is correct
39 Correct 1 ms 2396 KB Output is correct
40 Correct 0 ms 2396 KB Output is correct
41 Correct 0 ms 2396 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 0 ms 2396 KB Output is correct
45 Correct 0 ms 2396 KB Output is correct
46 Correct 1 ms 2396 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 0 ms 2396 KB Output is correct
50 Correct 0 ms 2396 KB Output is correct
51 Correct 1 ms 2396 KB Output is correct
52 Correct 1 ms 2396 KB Output is correct
53 Correct 1 ms 2396 KB Output is correct
54 Correct 1 ms 2396 KB Output is correct
55 Correct 1 ms 2396 KB Output is correct
56 Correct 1 ms 2396 KB Output is correct
57 Correct 1 ms 2524 KB Output is correct
58 Correct 1 ms 2396 KB Output is correct
59 Correct 1 ms 2396 KB Output is correct
60 Correct 1 ms 2396 KB Output is correct
61 Correct 110 ms 12120 KB Output is correct
62 Correct 110 ms 12180 KB Output is correct
63 Correct 96 ms 12116 KB Output is correct
64 Correct 109 ms 12124 KB Output is correct
65 Correct 115 ms 12116 KB Output is correct
66 Correct 114 ms 12120 KB Output is correct
67 Correct 112 ms 12124 KB Output is correct
68 Correct 90 ms 12124 KB Output is correct
69 Correct 87 ms 12112 KB Output is correct
70 Correct 87 ms 11856 KB Output is correct