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Submission #731512

# Submission time Handle Problem Language Result Execution time Memory
731512 2023-04-27T13:40:39 Z mohav48173 Feast (NOI19_feast) C++14
100 / 100
 288 ms 5392 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-7)) {
        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 4864 KB Output is correct
2 Correct 91 ms 5024 KB Output is correct
3 Correct 90 ms 5260 KB Output is correct
4 Correct 97 ms 5228 KB Output is correct
5 Correct 116 ms 5204 KB Output is correct
6 Correct 86 ms 5084 KB Output is correct
7 Correct 89 ms 5128 KB Output is correct
8 Correct 89 ms 5232 KB Output is correct
9 Correct 89 ms 5132 KB Output is correct
10 Correct 105 ms 5180 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 4912 KB Output is correct
2 Correct 77 ms 5000 KB Output is correct
3 Correct 77 ms 4892 KB Output is correct
4 Correct 81 ms 4896 KB Output is correct
5 Correct 92 ms 5124 KB Output is correct
6 Correct 73 ms 5076 KB Output is correct
7 Correct 82 ms 5272 KB Output is correct
8 Correct 98 ms 5236 KB Output is correct
9 Correct 93 ms 5068 KB Output is correct
10 Correct 78 ms 5212 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 155 ms 4956 KB Output is correct
2 Correct 153 ms 4788 KB Output is correct
3 Correct 170 ms 4944 KB Output is correct
4 Correct 143 ms 4944 KB Output is correct
5 Correct 144 ms 4948 KB Output is correct
6 Correct 155 ms 4972 KB Output is correct
7 Correct 150 ms 4940 KB Output is correct
8 Correct 146 ms 4944 KB Output is correct
9 Correct 146 ms 4948 KB Output is correct
10 Correct 149 ms 4952 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 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 340 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 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 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 340 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 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 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 340 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 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 2 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 84 ms 4864 KB Output is correct
2 Correct 91 ms 5024 KB Output is correct
3 Correct 90 ms 5260 KB Output is correct
4 Correct 97 ms 5228 KB Output is correct
5 Correct 116 ms 5204 KB Output is correct
6 Correct 86 ms 5084 KB Output is correct
7 Correct 89 ms 5128 KB Output is correct
8 Correct 89 ms 5232 KB Output is correct
9 Correct 89 ms 5132 KB Output is correct
10 Correct 105 ms 5180 KB Output is correct
11 Correct 73 ms 4912 KB Output is correct
12 Correct 77 ms 5000 KB Output is correct
13 Correct 77 ms 4892 KB Output is correct
14 Correct 81 ms 4896 KB Output is correct
15 Correct 92 ms 5124 KB Output is correct
16 Correct 73 ms 5076 KB Output is correct
17 Correct 82 ms 5272 KB Output is correct
18 Correct 98 ms 5236 KB Output is correct
19 Correct 93 ms 5068 KB Output is correct
20 Correct 78 ms 5212 KB Output is correct
21 Correct 155 ms 4956 KB Output is correct
22 Correct 153 ms 4788 KB Output is correct
23 Correct 170 ms 4944 KB Output is correct
24 Correct 143 ms 4944 KB Output is correct
25 Correct 144 ms 4948 KB Output is correct
26 Correct 155 ms 4972 KB Output is correct
27 Correct 150 ms 4940 KB Output is correct
28 Correct 146 ms 4944 KB Output is correct
29 Correct 146 ms 4948 KB Output is correct
30 Correct 149 ms 4952 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 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 340 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 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 2 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 275 ms 5276 KB Output is correct
62 Correct 254 ms 5392 KB Output is correct
63 Correct 190 ms 5260 KB Output is correct
64 Correct 288 ms 5356 KB Output is correct
65 Correct 274 ms 5356 KB Output is correct
66 Correct 278 ms 5324 KB Output is correct
67 Correct 280 ms 5272 KB Output is correct
68 Correct 161 ms 5360 KB Output is correct
69 Correct 158 ms 5224 KB Output is correct
70 Correct 151 ms 5240 KB Output is correct