oj.uz

Submission #853386

# Submission time Handle Problem Language Result Execution time Memory
853386 2023-09-24T09:09:46 Z taitruong270 Feast (NOI19_feast) C++17
100 / 100
 359 ms 34132 KB 
/*==============================================================================================================
         __                    __                                             _____     ______    _______
        |  |                  |  |                                           /  __ \   / _____|  / ______|     
      __|  |__              __|  |__                                         |_|  | |  | |       | |  
     |__|   __|            |__|   __|                                             | |  | |____   | |_____ 
        |  |    _____   _     |  |    ____  __  __  ____    _____    _____       / /   \ ___  \  |  ___  \
        |  |   /  _  \ | |    |  |   /  _/ | | | | /  _  \ /  __ \  /  _  \     / /         | |  | |   | |
        |  |_  | |_| | | |    |  |_  | |   | |_| | | |_| | | |  | | | |_| |    / /___   ____| |  | |___| |
        \____\ \____/| |_|    \____\ |_|   \_____/ \_____/ |_|  |_| \____ |   |______| |______/  \_______/
                                                                        | |
                                                                      __/ |
                                                                     |___/  
                                        Pratice, practice, and practice
                                       Where is the bug, delete it there
                                     Try, try, try again until you succeed
I hated every minute of training, but I said, 'Don't quit. Suffer now and live the rest of your life as a champion.' - Mohamed Ali 
                              You may not be the best, but must be the most effort
     Even the things and people you like, you don't have the courage to take, you are destined to be a failure.
                                           Difficult means more time
                                          Done is better than perfect
                                         Pain + Reflection = Progress 
==============================================================================================================*/
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define endl '\n'
const ll mod = 1e9+7;

ll n, k, a[300005];
pair<ld, ll> dp[300005][3];  //sum doan, cnt doan
ld l, r, lambda;

bool check(ld m)
{
    dp[0][0]={0, 0};
    dp[0][1]={-1e18, 0};
    for (ll i=1; i<=n; i++)
    {
        dp[i][0]=max(dp[i-1][0], dp[i-1][1]);
        dp[i][1]=max(   make_pair(dp[i-1][1].first+a[i], dp[i-1][1].second),   //them a[i] vao doan truoc do
                        make_pair(dp[i-1][0].first+a[i]-m, dp[i-1][0].second+1));  // bat dau doan moi tai vi tri a[i]
    }
    return max(dp[n][0], dp[n][1]).second>=k;
}

void solve()
{
    cin>>n>>k;
    for (ll i=1; i<=n; i++) cin>>a[i];
    l=0, r=1e18;
    ld eps=1e-3;
    while (r-l>eps)
    {
        ld mid=(l+r)/2;
        if (check(mid)==true) l=mid;
        else r=mid;
    }
    lambda=l;
    check(lambda);
    cout<<llround(max(dp[n][0], dp[n][1]).first+lambda*k);
}

int main()
{
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    clock_t start = clock();
    //#ifndef ONLINE_JUDGE
    //freopen("_input.txt", "r", stdin);
    //freopen("_output.txt", "w", stdout);
    //#endif
    solve();
    clock_t end = clock();
    cerr<<"Time: "<<fixed<<setprecision(10)<<double(end-start)/double(CLOCKS_PER_SEC)<<"\n";
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 226 ms 30800 KB Output is correct
2 Correct 228 ms 30940 KB Output is correct
3 Correct 236 ms 30972 KB Output is correct
4 Correct 230 ms 30800 KB Output is correct
5 Correct 228 ms 30932 KB Output is correct
6 Correct 223 ms 30892 KB Output is correct
7 Correct 224 ms 30892 KB Output is correct
8 Correct 225 ms 30704 KB Output is correct
9 Correct 226 ms 30808 KB Output is correct
10 Correct 222 ms 30800 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 228 ms 30908 KB Output is correct
2 Correct 246 ms 30964 KB Output is correct
3 Correct 220 ms 31064 KB Output is correct
4 Correct 229 ms 30924 KB Output is correct
5 Correct 227 ms 30800 KB Output is correct
6 Correct 222 ms 32028 KB Output is correct
7 Correct 230 ms 32336 KB Output is correct
8 Correct 233 ms 33620 KB Output is correct
9 Correct 228 ms 33616 KB Output is correct
10 Correct 223 ms 32080 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 272 ms 31160 KB Output is correct
2 Correct 271 ms 31068 KB Output is correct
3 Correct 279 ms 30936 KB Output is correct
4 Correct 271 ms 30908 KB Output is correct
5 Correct 272 ms 30940 KB Output is correct
6 Correct 276 ms 31172 KB Output is correct
7 Correct 275 ms 30960 KB Output is correct
8 Correct 268 ms 30800 KB Output is correct
9 Correct 278 ms 31060 KB Output is correct
10 Correct 271 ms 30884 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 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 2392 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 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 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 2392 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 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2396 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 2544 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2404 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 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 2392 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 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2396 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 2544 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2404 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 3 ms 2652 KB Output is correct
22 Correct 2 ms 2652 KB Output is correct
23 Correct 3 ms 4700 KB Output is correct
24 Correct 2 ms 2648 KB Output is correct
25 Correct 2 ms 4700 KB Output is correct
26 Correct 3 ms 4700 KB Output is correct
27 Correct 3 ms 4700 KB Output is correct
28 Correct 3 ms 4700 KB Output is correct
29 Correct 3 ms 4696 KB Output is correct
30 Correct 2 ms 2464 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 226 ms 30800 KB Output is correct
2 Correct 228 ms 30940 KB Output is correct
3 Correct 236 ms 30972 KB Output is correct
4 Correct 230 ms 30800 KB Output is correct
5 Correct 228 ms 30932 KB Output is correct
6 Correct 223 ms 30892 KB Output is correct
7 Correct 224 ms 30892 KB Output is correct
8 Correct 225 ms 30704 KB Output is correct
9 Correct 226 ms 30808 KB Output is correct
10 Correct 222 ms 30800 KB Output is correct
11 Correct 228 ms 30908 KB Output is correct
12 Correct 246 ms 30964 KB Output is correct
13 Correct 220 ms 31064 KB Output is correct
14 Correct 229 ms 30924 KB Output is correct
15 Correct 227 ms 30800 KB Output is correct
16 Correct 222 ms 32028 KB Output is correct
17 Correct 230 ms 32336 KB Output is correct
18 Correct 233 ms 33620 KB Output is correct
19 Correct 228 ms 33616 KB Output is correct
20 Correct 223 ms 32080 KB Output is correct
21 Correct 272 ms 31160 KB Output is correct
22 Correct 271 ms 31068 KB Output is correct
23 Correct 279 ms 30936 KB Output is correct
24 Correct 271 ms 30908 KB Output is correct
25 Correct 272 ms 30940 KB Output is correct
26 Correct 276 ms 31172 KB Output is correct
27 Correct 275 ms 30960 KB Output is correct
28 Correct 268 ms 30800 KB Output is correct
29 Correct 278 ms 31060 KB Output is correct
30 Correct 271 ms 30884 KB Output is correct
31 Correct 1 ms 2392 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 2392 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 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2392 KB Output is correct
40 Correct 1 ms 2392 KB Output is correct
41 Correct 1 ms 2396 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 2544 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct
46 Correct 1 ms 2396 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 1 ms 2404 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 3 ms 2652 KB Output is correct
52 Correct 2 ms 2652 KB Output is correct
53 Correct 3 ms 4700 KB Output is correct
54 Correct 2 ms 2648 KB Output is correct
55 Correct 2 ms 4700 KB Output is correct
56 Correct 3 ms 4700 KB Output is correct
57 Correct 3 ms 4700 KB Output is correct
58 Correct 3 ms 4700 KB Output is correct
59 Correct 3 ms 4696 KB Output is correct
60 Correct 2 ms 2464 KB Output is correct
61 Correct 337 ms 33892 KB Output is correct
62 Correct 340 ms 34032 KB Output is correct
63 Correct 295 ms 34132 KB Output is correct
64 Correct 342 ms 33984 KB Output is correct
65 Correct 359 ms 34128 KB Output is correct
66 Correct 344 ms 33972 KB Output is correct
67 Correct 346 ms 33888 KB Output is correct
68 Correct 277 ms 33964 KB Output is correct
69 Correct 270 ms 34096 KB Output is correct
70 Correct 267 ms 33760 KB Output is correct