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답안 #1017425

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1017425 2024-07-09T07:53:48 Z vjudge1 Feast (NOI19_feast) C++17
100 / 100
 138 ms 14712 KB 
#include <bits/stdc++.h>
#define PI acos(-1.0)
#define pll pair<ll, ll>
#define ll long long
#define ld long double
#define endl "\n"
#define pb push_back
#define ff first
#define ss second
#define ins insert
#define pll2 pair<pll,ll>
#define bit(i,k) ((k>>i)&1)
#define pii pair<int,int>
#define mp make_pair

using namespace std;
const long long mod = 1e9+7;
const ll inf = 1e18;
const ll maxN = 3e5+5;
ll n,k;
ll a[maxN];
pll go(ll lambda){
  pll dp[n+5][2]={};//lay i hoac deo

  dp[0][1].ff=-inf;
  for(int i=1;i<=n;i++){
    dp[i][0]=max(dp[i-1][0],dp[i-1][1]);
    pll p1={dp[i-1][0].ff+a[i]-lambda,dp[i-1][0].ss+1};
    pll p2={dp[i-1][1].ff+a[i],dp[i-1][1].ss};
    dp[i][1]=max(p1,p2);
  }

  return max(dp[n][1],dp[n][0]);
}
void solve() {
  cin>>n>>k;
  for(int i=1;i<=n;i++){
    cin>>a[i];
  }
  ll l=0,r=inf;
  ll lmd;
  ll ans=-inf;
  while(l<r){
    ll md=(l+r+1)/2;
    pll p=go(md);
  
    if(p.ss>=k){ans=p.ff;l=md;}
    else{r=md-1;}
  }
  
  cout<<max(0ll,go(l).ff+k*l);


}
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    //  freopen("rao.inp", "r", stdin);
    // freopen("rao.out", "w", stdout);
    ll nhim = 1;
    // cin >> nhim;
    // cout<<nhim<<'\n';
    while (nhim--) {
        solve();
    }
}

Compilation message

feast.cpp: In function 'void solve()':
feast.cpp:42:6: warning: unused variable 'lmd' [-Wunused-variable]
   42 |   ll lmd;
      |      ^~~
feast.cpp:43:6: warning: variable 'ans' set but not used [-Wunused-but-set-variable]
   43 |   ll ans=-inf;
      |      ^~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 13904 KB Output is correct
2 Correct 71 ms 14416 KB Output is correct
3 Correct 71 ms 14608 KB Output is correct
4 Correct 69 ms 14416 KB Output is correct
5 Correct 85 ms 14456 KB Output is correct
6 Correct 75 ms 14160 KB Output is correct
7 Correct 75 ms 14016 KB Output is correct
8 Correct 80 ms 14420 KB Output is correct
9 Correct 67 ms 13904 KB Output is correct
10 Correct 74 ms 14528 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 65 ms 12892 KB Output is correct
2 Correct 64 ms 13256 KB Output is correct
3 Correct 62 ms 12836 KB Output is correct
4 Correct 61 ms 13096 KB Output is correct
5 Correct 68 ms 14144 KB Output is correct
6 Correct 61 ms 12892 KB Output is correct
7 Correct 68 ms 13308 KB Output is correct
8 Correct 76 ms 14668 KB Output is correct
9 Correct 69 ms 13904 KB Output is correct
10 Correct 75 ms 13140 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 98 ms 14420 KB Output is correct
2 Correct 108 ms 14428 KB Output is correct
3 Correct 95 ms 14332 KB Output is correct
4 Correct 95 ms 14260 KB Output is correct
5 Correct 101 ms 14420 KB Output is correct
6 Correct 122 ms 14528 KB Output is correct
7 Correct 96 ms 14680 KB Output is correct
8 Correct 94 ms 14420 KB Output is correct
9 Correct 93 ms 14712 KB Output is correct
10 Correct 111 ms 14676 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 472 KB Output is correct
19 Correct 0 ms 464 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 472 KB Output is correct
19 Correct 0 ms 464 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 480 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 508 KB Output is correct
30 Correct 1 ms 348 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 13904 KB Output is correct
2 Correct 71 ms 14416 KB Output is correct
3 Correct 71 ms 14608 KB Output is correct
4 Correct 69 ms 14416 KB Output is correct
5 Correct 85 ms 14456 KB Output is correct
6 Correct 75 ms 14160 KB Output is correct
7 Correct 75 ms 14016 KB Output is correct
8 Correct 80 ms 14420 KB Output is correct
9 Correct 67 ms 13904 KB Output is correct
10 Correct 74 ms 14528 KB Output is correct
11 Correct 65 ms 12892 KB Output is correct
12 Correct 64 ms 13256 KB Output is correct
13 Correct 62 ms 12836 KB Output is correct
14 Correct 61 ms 13096 KB Output is correct
15 Correct 68 ms 14144 KB Output is correct
16 Correct 61 ms 12892 KB Output is correct
17 Correct 68 ms 13308 KB Output is correct
18 Correct 76 ms 14668 KB Output is correct
19 Correct 69 ms 13904 KB Output is correct
20 Correct 75 ms 13140 KB Output is correct
21 Correct 98 ms 14420 KB Output is correct
22 Correct 108 ms 14428 KB Output is correct
23 Correct 95 ms 14332 KB Output is correct
24 Correct 95 ms 14260 KB Output is correct
25 Correct 101 ms 14420 KB Output is correct
26 Correct 122 ms 14528 KB Output is correct
27 Correct 96 ms 14680 KB Output is correct
28 Correct 94 ms 14420 KB Output is correct
29 Correct 93 ms 14712 KB Output is correct
30 Correct 111 ms 14676 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 464 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 1 ms 344 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 472 KB Output is correct
49 Correct 0 ms 464 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 1 ms 480 KB Output is correct
55 Correct 1 ms 348 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 1 ms 344 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 1 ms 508 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 126 ms 14240 KB Output is correct
62 Correct 124 ms 14676 KB Output is correct
63 Correct 110 ms 14400 KB Output is correct
64 Correct 134 ms 14644 KB Output is correct
65 Correct 138 ms 14596 KB Output is correct
66 Correct 129 ms 14604 KB Output is correct
67 Correct 135 ms 14420 KB Output is correct
68 Correct 110 ms 14416 KB Output is correct
69 Correct 99 ms 14416 KB Output is correct
70 Correct 94 ms 14160 KB Output is correct