oj.uz

답안 #931874

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
931874 2024-02-22T13:46:12 Z fryingduc Feast (NOI19_feast) C++17
100 / 100
 306 ms 24924 KB 
#include<bits/stdc++.h>
#define int long long
#define double long double
#define PB push_back
#define maxn 300007
#define bit(x,i) ((x>>i)&1)
#define S second
#define F first
#define MP make_pair

using namespace std;

typedef pair<int,int> pii;
typedef pair<double,double> pdd;
typedef pair<double,int> pdi;
const int inf = 1e9*3e5;
const int mod = 1e9+7;
const double PI = acos(-1);
const double eps = 1e-3;

int n,k,a[maxn];
pdi f[maxn][2];

void readData(){
    cin>>n>>k;
    for (int i=1;i<=n;i++) cin>>a[i];
}

bool check(double dak){
    f[0][0]={0,0};
    f[0][1]={-inf,0};
    for (int i=1;i<=n;i++){
        f[i][0]=max(f[i-1][0],f[i-1][1]);
        f[i][1]=max((pdi){f[i-1][1].F+a[i],f[i-1][1].S},(pdi){f[i-1][0].F+a[i]-dak,f[i-1][0].S+1});
    }
    int mim=max(f[n][0],f[n][1]).S;
    return mim>=k;
}

void solve(){
    double l=0,r=inf,dak;
    while (l+eps<r){
        double mid=(l+r)/2;
        if (check(mid)) l=mid;
        else r=mid;
    }
    dak=l;
    check(dak);
    int ans=round(dak*k+max(f[n][0],f[n][1]).F);
    cout<<ans;
}

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    readData();
    solve();
    return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 182 ms 24148 KB Output is correct
2 Correct 196 ms 24404 KB Output is correct
3 Correct 191 ms 24452 KB Output is correct
4 Correct 192 ms 24408 KB Output is correct
5 Correct 193 ms 24400 KB Output is correct
6 Correct 182 ms 24304 KB Output is correct
7 Correct 180 ms 24052 KB Output is correct
8 Correct 189 ms 24656 KB Output is correct
9 Correct 186 ms 24148 KB Output is correct
10 Correct 187 ms 24368 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 187 ms 22636 KB Output is correct
2 Correct 185 ms 22620 KB Output is correct
3 Correct 182 ms 22604 KB Output is correct
4 Correct 181 ms 22488 KB Output is correct
5 Correct 190 ms 24144 KB Output is correct
6 Correct 200 ms 22640 KB Output is correct
7 Correct 191 ms 22708 KB Output is correct
8 Correct 202 ms 24260 KB Output is correct
9 Correct 196 ms 24144 KB Output is correct
10 Correct 190 ms 22688 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 232 ms 24508 KB Output is correct
2 Correct 228 ms 24404 KB Output is correct
3 Correct 238 ms 24660 KB Output is correct
4 Correct 225 ms 24272 KB Output is correct
5 Correct 228 ms 24556 KB Output is correct
6 Correct 231 ms 24656 KB Output is correct
7 Correct 230 ms 24400 KB Output is correct
8 Correct 224 ms 24556 KB Output is correct
9 Correct 233 ms 24624 KB Output is correct
10 Correct 228 ms 24400 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2400 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2400 KB Output is correct
11 Correct 1 ms 2400 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2400 KB Output is correct
16 Correct 1 ms 2400 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2400 KB Output is correct
19 Correct 1 ms 2400 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2400 KB Output is correct
11 Correct 1 ms 2400 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2400 KB Output is correct
16 Correct 1 ms 2400 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2400 KB Output is correct
19 Correct 1 ms 2400 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 3 ms 2840 KB Output is correct
22 Correct 2 ms 2652 KB Output is correct
23 Correct 2 ms 2536 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 2 ms 2652 KB Output is correct
27 Correct 2 ms 2652 KB Output is correct
28 Correct 2 ms 2652 KB Output is correct
29 Correct 2 ms 2652 KB Output is correct
30 Correct 2 ms 2648 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 182 ms 24148 KB Output is correct
2 Correct 196 ms 24404 KB Output is correct
3 Correct 191 ms 24452 KB Output is correct
4 Correct 192 ms 24408 KB Output is correct
5 Correct 193 ms 24400 KB Output is correct
6 Correct 182 ms 24304 KB Output is correct
7 Correct 180 ms 24052 KB Output is correct
8 Correct 189 ms 24656 KB Output is correct
9 Correct 186 ms 24148 KB Output is correct
10 Correct 187 ms 24368 KB Output is correct
11 Correct 187 ms 22636 KB Output is correct
12 Correct 185 ms 22620 KB Output is correct
13 Correct 182 ms 22604 KB Output is correct
14 Correct 181 ms 22488 KB Output is correct
15 Correct 190 ms 24144 KB Output is correct
16 Correct 200 ms 22640 KB Output is correct
17 Correct 191 ms 22708 KB Output is correct
18 Correct 202 ms 24260 KB Output is correct
19 Correct 196 ms 24144 KB Output is correct
20 Correct 190 ms 22688 KB Output is correct
21 Correct 232 ms 24508 KB Output is correct
22 Correct 228 ms 24404 KB Output is correct
23 Correct 238 ms 24660 KB Output is correct
24 Correct 225 ms 24272 KB Output is correct
25 Correct 228 ms 24556 KB Output is correct
26 Correct 231 ms 24656 KB Output is correct
27 Correct 230 ms 24400 KB Output is correct
28 Correct 224 ms 24556 KB Output is correct
29 Correct 233 ms 24624 KB Output is correct
30 Correct 228 ms 24400 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2392 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2396 KB Output is correct
40 Correct 1 ms 2400 KB Output is correct
41 Correct 1 ms 2400 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2396 KB Output is correct
45 Correct 1 ms 2400 KB Output is correct
46 Correct 1 ms 2400 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 1 ms 2400 KB Output is correct
49 Correct 1 ms 2400 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 3 ms 2840 KB Output is correct
52 Correct 2 ms 2652 KB Output is correct
53 Correct 2 ms 2536 KB Output is correct
54 Correct 2 ms 2652 KB Output is correct
55 Correct 2 ms 2652 KB Output is correct
56 Correct 2 ms 2652 KB Output is correct
57 Correct 2 ms 2652 KB Output is correct
58 Correct 2 ms 2652 KB Output is correct
59 Correct 2 ms 2652 KB Output is correct
60 Correct 2 ms 2648 KB Output is correct
61 Correct 290 ms 24496 KB Output is correct
62 Correct 294 ms 24632 KB Output is correct
63 Correct 251 ms 24404 KB Output is correct
64 Correct 304 ms 24924 KB Output is correct
65 Correct 306 ms 24404 KB Output is correct
66 Correct 306 ms 24656 KB Output is correct
67 Correct 300 ms 24400 KB Output is correct
68 Correct 236 ms 24404 KB Output is correct
69 Correct 228 ms 24400 KB Output is correct
70 Correct 224 ms 24404 KB Output is correct