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Submission #731515

# Submission time Handle Problem Language Result Execution time Memory
731515 2023-04-27T13:43:57 Z mohav48173 Feast (NOI19_feast) C++14
100 / 100
 275 ms 6032 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=1e18;
    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 82 ms 5776 KB Output is correct
2 Correct 92 ms 5704 KB Output is correct
3 Correct 91 ms 5716 KB Output is correct
4 Correct 88 ms 5708 KB Output is correct
5 Correct 87 ms 5692 KB Output is correct
6 Correct 83 ms 5636 KB Output is correct
7 Correct 82 ms 5632 KB Output is correct
8 Correct 86 ms 5788 KB Output is correct
9 Correct 84 ms 5560 KB Output is correct
10 Correct 95 ms 5624 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 5832 KB Output is correct
2 Correct 74 ms 6028 KB Output is correct
3 Correct 92 ms 5912 KB Output is correct
4 Correct 84 ms 5892 KB Output is correct
5 Correct 102 ms 5636 KB Output is correct
6 Correct 71 ms 5656 KB Output is correct
7 Correct 74 ms 5732 KB Output is correct
8 Correct 86 ms 5748 KB Output is correct
9 Correct 87 ms 5580 KB Output is correct
10 Correct 75 ms 5652 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 5868 KB Output is correct
2 Correct 155 ms 5932 KB Output is correct
3 Correct 144 ms 5968 KB Output is correct
4 Correct 147 ms 5836 KB Output is correct
5 Correct 150 ms 6008 KB Output is correct
6 Correct 144 ms 5892 KB Output is correct
7 Correct 145 ms 5964 KB Output is correct
8 Correct 144 ms 5964 KB Output is correct
9 Correct 156 ms 6032 KB Output is correct
10 Correct 158 ms 6004 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 1 ms 340 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 340 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 1 ms 340 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 340 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 332 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 1 ms 340 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 340 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 332 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 344 KB Output is correct
26 Correct 2 ms 364 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 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 82 ms 5776 KB Output is correct
2 Correct 92 ms 5704 KB Output is correct
3 Correct 91 ms 5716 KB Output is correct
4 Correct 88 ms 5708 KB Output is correct
5 Correct 87 ms 5692 KB Output is correct
6 Correct 83 ms 5636 KB Output is correct
7 Correct 82 ms 5632 KB Output is correct
8 Correct 86 ms 5788 KB Output is correct
9 Correct 84 ms 5560 KB Output is correct
10 Correct 95 ms 5624 KB Output is correct
11 Correct 87 ms 5832 KB Output is correct
12 Correct 74 ms 6028 KB Output is correct
13 Correct 92 ms 5912 KB Output is correct
14 Correct 84 ms 5892 KB Output is correct
15 Correct 102 ms 5636 KB Output is correct
16 Correct 71 ms 5656 KB Output is correct
17 Correct 74 ms 5732 KB Output is correct
18 Correct 86 ms 5748 KB Output is correct
19 Correct 87 ms 5580 KB Output is correct
20 Correct 75 ms 5652 KB Output is correct
21 Correct 146 ms 5868 KB Output is correct
22 Correct 155 ms 5932 KB Output is correct
23 Correct 144 ms 5968 KB Output is correct
24 Correct 147 ms 5836 KB Output is correct
25 Correct 150 ms 6008 KB Output is correct
26 Correct 144 ms 5892 KB Output is correct
27 Correct 145 ms 5964 KB Output is correct
28 Correct 144 ms 5964 KB Output is correct
29 Correct 156 ms 6032 KB Output is correct
30 Correct 158 ms 6004 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 340 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 332 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 344 KB Output is correct
56 Correct 2 ms 364 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 336 KB Output is correct
60 Correct 2 ms 340 KB Output is correct
61 Correct 250 ms 5784 KB Output is correct
62 Correct 241 ms 5940 KB Output is correct
63 Correct 184 ms 5800 KB Output is correct
64 Correct 250 ms 5856 KB Output is correct
65 Correct 275 ms 5776 KB Output is correct
66 Correct 253 ms 5748 KB Output is correct
67 Correct 254 ms 5776 KB Output is correct
68 Correct 142 ms 5868 KB Output is correct
69 Correct 147 ms 5776 KB Output is correct
70 Correct 136 ms 5640 KB Output is correct