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Submission #731526

# Submission time Handle Problem Language Result Execution time Memory
731526 2023-04-27T13:50:02 Z mohav48173 Feast (NOI19_feast) C++14
100 / 100
 291 ms 5324 KB 
#include<bits/stdc++.h>
using namespace std;
int n,k;
const long double sz=1e-6;
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(l+sz<r) {
        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 84 ms 4860 KB Output is correct
2 Correct 89 ms 4956 KB Output is correct
3 Correct 96 ms 4936 KB Output is correct
4 Correct 90 ms 4984 KB Output is correct
5 Correct 89 ms 4948 KB Output is correct
6 Correct 87 ms 4872 KB Output is correct
7 Correct 88 ms 4780 KB Output is correct
8 Correct 107 ms 4924 KB Output is correct
9 Correct 84 ms 4788 KB Output is correct
10 Correct 91 ms 4924 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 82 ms 4896 KB Output is correct
2 Correct 75 ms 4908 KB Output is correct
3 Correct 69 ms 4816 KB Output is correct
4 Correct 75 ms 4928 KB Output is correct
5 Correct 81 ms 4868 KB Output is correct
6 Correct 78 ms 4888 KB Output is correct
7 Correct 97 ms 4952 KB Output is correct
8 Correct 81 ms 4880 KB Output is correct
9 Correct 81 ms 4812 KB Output is correct
10 Correct 73 ms 4984 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 141 ms 4956 KB Output is correct
2 Correct 160 ms 4900 KB Output is correct
3 Correct 133 ms 4920 KB Output is correct
4 Correct 129 ms 4900 KB Output is correct
5 Correct 166 ms 4940 KB Output is correct
6 Correct 184 ms 4972 KB Output is correct
7 Correct 149 ms 4984 KB Output is correct
8 Correct 161 ms 4904 KB Output is correct
9 Correct 157 ms 5052 KB Output is correct
10 Correct 149 ms 4948 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 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 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 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 1 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 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 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 1 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 368 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 2 ms 340 KB Output is correct
27 Correct 3 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 2 ms 336 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 84 ms 4860 KB Output is correct
2 Correct 89 ms 4956 KB Output is correct
3 Correct 96 ms 4936 KB Output is correct
4 Correct 90 ms 4984 KB Output is correct
5 Correct 89 ms 4948 KB Output is correct
6 Correct 87 ms 4872 KB Output is correct
7 Correct 88 ms 4780 KB Output is correct
8 Correct 107 ms 4924 KB Output is correct
9 Correct 84 ms 4788 KB Output is correct
10 Correct 91 ms 4924 KB Output is correct
11 Correct 82 ms 4896 KB Output is correct
12 Correct 75 ms 4908 KB Output is correct
13 Correct 69 ms 4816 KB Output is correct
14 Correct 75 ms 4928 KB Output is correct
15 Correct 81 ms 4868 KB Output is correct
16 Correct 78 ms 4888 KB Output is correct
17 Correct 97 ms 4952 KB Output is correct
18 Correct 81 ms 4880 KB Output is correct
19 Correct 81 ms 4812 KB Output is correct
20 Correct 73 ms 4984 KB Output is correct
21 Correct 141 ms 4956 KB Output is correct
22 Correct 160 ms 4900 KB Output is correct
23 Correct 133 ms 4920 KB Output is correct
24 Correct 129 ms 4900 KB Output is correct
25 Correct 166 ms 4940 KB Output is correct
26 Correct 184 ms 4972 KB Output is correct
27 Correct 149 ms 4984 KB Output is correct
28 Correct 161 ms 4904 KB Output is correct
29 Correct 157 ms 5052 KB Output is correct
30 Correct 149 ms 4948 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 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 1 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 368 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 2 ms 340 KB Output is correct
57 Correct 3 ms 340 KB Output is correct
58 Correct 2 ms 340 KB Output is correct
59 Correct 2 ms 336 KB Output is correct
60 Correct 2 ms 340 KB Output is correct
61 Correct 279 ms 5144 KB Output is correct
62 Correct 248 ms 5264 KB Output is correct
63 Correct 207 ms 5140 KB Output is correct
64 Correct 291 ms 5224 KB Output is correct
65 Correct 288 ms 5232 KB Output is correct
66 Correct 271 ms 5324 KB Output is correct
67 Correct 264 ms 5140 KB Output is correct
68 Correct 151 ms 5300 KB Output is correct
69 Correct 139 ms 5200 KB Output is correct
70 Correct 136 ms 5120 KB Output is correct