oj.uz

답안 #731522

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
731522 2023-04-27T13:48:15 Z mohav48173 Feast (NOI19_feast) C++14
63 / 100
 1000 ms 5068 KB 
#include<bits/stdc++.h>
using namespace std;
int n,k;
const 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

# 결과 실행 시간 메모리 Grader output
1 Correct 78 ms 4808 KB Output is correct
2 Correct 92 ms 4952 KB Output is correct
3 Correct 113 ms 4936 KB Output is correct
4 Correct 87 ms 4968 KB Output is correct
5 Correct 83 ms 4948 KB Output is correct
6 Correct 78 ms 4848 KB Output is correct
7 Correct 117 ms 4868 KB Output is correct
8 Correct 85 ms 4968 KB Output is correct
9 Correct 80 ms 4872 KB Output is correct
10 Correct 82 ms 4924 KB Output is correct

Subtask #2
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 75 ms 4856 KB Output is correct
2 Correct 78 ms 5004 KB Output is correct
3 Correct 67 ms 4888 KB Output is correct
4 Correct 68 ms 4936 KB Output is correct
5 Execution timed out 1089 ms 4824 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 153 ms 5068 KB Output is correct
2 Correct 139 ms 4912 KB Output is correct
3 Correct 132 ms 4948 KB Output is correct
4 Correct 136 ms 4904 KB Output is correct
5 Correct 152 ms 4940 KB Output is correct
6 Correct 135 ms 4976 KB Output is correct
7 Correct 138 ms 4988 KB Output is correct
8 Correct 136 ms 5068 KB Output is correct
9 Correct 149 ms 5000 KB Output is correct
10 Correct 134 ms 4988 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 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 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 340 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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 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 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 340 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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 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 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 340 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 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 3 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 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 78 ms 4808 KB Output is correct
2 Correct 92 ms 4952 KB Output is correct
3 Correct 113 ms 4936 KB Output is correct
4 Correct 87 ms 4968 KB Output is correct
5 Correct 83 ms 4948 KB Output is correct
6 Correct 78 ms 4848 KB Output is correct
7 Correct 117 ms 4868 KB Output is correct
8 Correct 85 ms 4968 KB Output is correct
9 Correct 80 ms 4872 KB Output is correct
10 Correct 82 ms 4924 KB Output is correct
11 Correct 75 ms 4856 KB Output is correct
12 Correct 78 ms 5004 KB Output is correct
13 Correct 67 ms 4888 KB Output is correct
14 Correct 68 ms 4936 KB Output is correct
15 Execution timed out 1089 ms 4824 KB Time limit exceeded
16 Halted 0 ms 0 KB -