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Submission #731520

# Submission time Handle Problem Language Result Execution time Memory
731520 2023-04-27T13:45:38 Z mohav48173 Feast (NOI19_feast) C++14
100 / 100
 266 ms 5100 KB 
#include<bits/stdc++.h>
using namespace std;
int n,k;
long long a[400000];
long long m[400000];
long long mincnt=0;
long double score=0;
long double get(int ind) {
    if(ind<0)return 0;
    else return m[ind];
}
void calc(long double lam) {
    long double bestscore=0;
    long long bestcnt=0;
    long double bestnxt=-lam;
    long long nxtcnt=0;
    for(int i=0;i<n;i++) {
        if(bestscore-lam-get(i-1)>bestnxt ||
           (bestscore-lam-get(i-1)==bestnxt && nxtcnt>bestcnt)) {
            bestnxt=bestscore-get(i-1)-lam;
            nxtcnt=bestcnt;
        }
        if(bestnxt+get(i)>bestscore || (bestnxt+get(i)==bestscore && nxtcnt+1<bestcnt)) {
            bestscore=bestnxt+get(i);
            bestcnt=nxtcnt+1;
        }
    }
    mincnt=bestcnt;
    score=bestscore;
}
int main() {
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>n>>k;
    for(int i=0;i<n;i++)cin>>a[i];
    m[0]=a[0];for(int i=1;i<n;i++)m[i]=m[i-1]+a[i];
    long double l=0,r=1e16;
    while((r-l)>(long double)(1e-6)) {
        long double mid=(l+r)/2.0;
        calc(mid);
        if(mincnt<=k)r=mid;
        else l=mid;
    }
    calc(r);
    cout<<(long long)(round(score+k*r))<<endl;
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 4860 KB Output is correct
2 Correct 87 ms 4948 KB Output is correct
3 Correct 92 ms 5008 KB Output is correct
4 Correct 98 ms 4920 KB Output is correct
5 Correct 84 ms 4916 KB Output is correct
6 Correct 85 ms 4868 KB Output is correct
7 Correct 86 ms 4812 KB Output is correct
8 Correct 82 ms 4964 KB Output is correct
9 Correct 87 ms 4808 KB Output is correct
10 Correct 85 ms 4836 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 4812 KB Output is correct
2 Correct 96 ms 5008 KB Output is correct
3 Correct 79 ms 4784 KB Output is correct
4 Correct 81 ms 4932 KB Output is correct
5 Correct 78 ms 4868 KB Output is correct
6 Correct 70 ms 5008 KB Output is correct
7 Correct 75 ms 5008 KB Output is correct
8 Correct 108 ms 4936 KB Output is correct
9 Correct 81 ms 4864 KB Output is correct
10 Correct 70 ms 4988 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 151 ms 4952 KB Output is correct
2 Correct 144 ms 4900 KB Output is correct
3 Correct 138 ms 4944 KB Output is correct
4 Correct 138 ms 4900 KB Output is correct
5 Correct 145 ms 4848 KB Output is correct
6 Correct 137 ms 4916 KB Output is correct
7 Correct 132 ms 4940 KB Output is correct
8 Correct 140 ms 4908 KB Output is correct
9 Correct 139 ms 5008 KB Output is correct
10 Correct 141 ms 4896 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 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 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 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 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 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 2 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 3 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 4860 KB Output is correct
2 Correct 87 ms 4948 KB Output is correct
3 Correct 92 ms 5008 KB Output is correct
4 Correct 98 ms 4920 KB Output is correct
5 Correct 84 ms 4916 KB Output is correct
6 Correct 85 ms 4868 KB Output is correct
7 Correct 86 ms 4812 KB Output is correct
8 Correct 82 ms 4964 KB Output is correct
9 Correct 87 ms 4808 KB Output is correct
10 Correct 85 ms 4836 KB Output is correct
11 Correct 87 ms 4812 KB Output is correct
12 Correct 96 ms 5008 KB Output is correct
13 Correct 79 ms 4784 KB Output is correct
14 Correct 81 ms 4932 KB Output is correct
15 Correct 78 ms 4868 KB Output is correct
16 Correct 70 ms 5008 KB Output is correct
17 Correct 75 ms 5008 KB Output is correct
18 Correct 108 ms 4936 KB Output is correct
19 Correct 81 ms 4864 KB Output is correct
20 Correct 70 ms 4988 KB Output is correct
21 Correct 151 ms 4952 KB Output is correct
22 Correct 144 ms 4900 KB Output is correct
23 Correct 138 ms 4944 KB Output is correct
24 Correct 138 ms 4900 KB Output is correct
25 Correct 145 ms 4848 KB Output is correct
26 Correct 137 ms 4916 KB Output is correct
27 Correct 132 ms 4940 KB Output is correct
28 Correct 140 ms 4908 KB Output is correct
29 Correct 139 ms 5008 KB Output is correct
30 Correct 141 ms 4896 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 1 ms 212 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 0 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 2 ms 340 KB Output is correct
52 Correct 2 ms 340 KB Output is correct
53 Correct 2 ms 340 KB Output is correct
54 Correct 2 ms 340 KB Output is correct
55 Correct 2 ms 340 KB Output is correct
56 Correct 3 ms 340 KB Output is correct
57 Correct 2 ms 340 KB Output is correct
58 Correct 2 ms 340 KB Output is correct
59 Correct 2 ms 340 KB Output is correct
60 Correct 2 ms 340 KB Output is correct
61 Correct 264 ms 4892 KB Output is correct
62 Correct 230 ms 5100 KB Output is correct
63 Correct 176 ms 4812 KB Output is correct
64 Correct 266 ms 4968 KB Output is correct
65 Correct 257 ms 4972 KB Output is correct
66 Correct 262 ms 4852 KB Output is correct
67 Correct 254 ms 4812 KB Output is correct
68 Correct 140 ms 4976 KB Output is correct
69 Correct 136 ms 4880 KB Output is correct
70 Correct 149 ms 4860 KB Output is correct