oj.uz

Submission #791938

# Submission time Handle Problem Language Result Execution time Memory
791938 2023-07-24T12:43:22 Z trucmai Feast (NOI19_feast) C++17
100 / 100
 105 ms 8012 KB 
//i_love_aisukiuwu
#include <bits/stdc++.h>
using namespace std;

#ifdef LOCAL
	#include "/home/trucmai/.vim/tools.h"
	#define debug(x...) cerr << "\e[91m"<<__func__<<":"<<__LINE__<<" [" << #x << "] = ["; _print(x); cerr << "\e[39m" << endl;
	#else
	#define debug(x...)
#endif

void open(){
  if(fopen("i.inp","r")){
    freopen("i.inp","r",stdin);
    freopen("o.out","w",stdout);
  }
}

#define ll long long
#define all(a) (a).begin(), (a).end()
#define vi vector<ll>
#define pi pair<ll,ll>
#define pii pair<ll,pair<ll,ll>>
#define fi first
#define se second
#define gcd __gcd
#define mset(a,v) memset(a, v, sizeof(a))
#define endl '\n'
#define spc " "

const int MN1 = 1e6 + 5,MN2 = 2e3 + 5,LOG = 27;
const ll MOD = 1e9 + 7,INF = 1e9;
ll n,k,a[MN1],pf[MN1];

void solve(){
  cin>>n>>k;
  for(ll i = 1;i <= n;++i){
    cin>>a[i];
    pf[i] = pf[i-1] + a[i];
  } 
  ll l = 0,r = 3e14,res = 0;
  auto dp=[&](ll x)->pi{
    pi mx = {0,0},f = {0,0};
    for(ll i = 1;i <= n;++i){
      f = max(f,{mx.fi + pf[i] - x,mx.se - 1}); 
      mx = max(mx,{f.fi - pf[i],f.se});
    }
    f.se *= -1;
    return f;
  };
  while(l <= r){
    ll m = (r+l) >> 1; 
    auto [val,cnt] = dp(m);
    debug(l,r,cnt);
    if(cnt <= k){
      r = m - 1;
      res = val + k*m;
    }
    else l = m + 1;
  }
  cout<<res;
}

signed main(){
  cin.tie(0) -> sync_with_stdio(0);
  open();
  ll t = 1; //cin>>t;
  while(t--) solve(); 
  
  #ifdef LOCAL
    cerr << endl << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
  #endif
}

Compilation message

feast.cpp: In function 'void open()':
feast.cpp:14:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     freopen("i.inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~
feast.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen("o.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 4820 KB Output is correct
2 Correct 35 ms 4920 KB Output is correct
3 Correct 47 ms 5188 KB Output is correct
4 Correct 46 ms 4976 KB Output is correct
5 Correct 40 ms 4924 KB Output is correct
6 Correct 34 ms 4820 KB Output is correct
7 Correct 40 ms 4812 KB Output is correct
8 Correct 37 ms 4964 KB Output is correct
9 Correct 35 ms 4828 KB Output is correct
10 Correct 41 ms 4896 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 54 ms 4904 KB Output is correct
2 Correct 38 ms 4976 KB Output is correct
3 Correct 30 ms 4896 KB Output is correct
4 Correct 49 ms 4884 KB Output is correct
5 Correct 44 ms 4808 KB Output is correct
6 Correct 36 ms 4888 KB Output is correct
7 Correct 30 ms 5020 KB Output is correct
8 Correct 42 ms 4976 KB Output is correct
9 Correct 51 ms 4812 KB Output is correct
10 Correct 33 ms 4928 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 4840 KB Output is correct
2 Correct 78 ms 7884 KB Output is correct
3 Correct 61 ms 7952 KB Output is correct
4 Correct 65 ms 7888 KB Output is correct
5 Correct 69 ms 7892 KB Output is correct
6 Correct 71 ms 7996 KB Output is correct
7 Correct 61 ms 7948 KB Output is correct
8 Correct 60 ms 7960 KB Output is correct
9 Correct 69 ms 8008 KB Output is correct
10 Correct 71 ms 8012 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 332 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 340 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 212 KB Output is correct
10 Correct 1 ms 324 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 332 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 340 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 212 KB Output is correct
10 Correct 1 ms 324 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 324 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 332 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 340 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 212 KB Output is correct
10 Correct 1 ms 324 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 324 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 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 372 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 368 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 4820 KB Output is correct
2 Correct 35 ms 4920 KB Output is correct
3 Correct 47 ms 5188 KB Output is correct
4 Correct 46 ms 4976 KB Output is correct
5 Correct 40 ms 4924 KB Output is correct
6 Correct 34 ms 4820 KB Output is correct
7 Correct 40 ms 4812 KB Output is correct
8 Correct 37 ms 4964 KB Output is correct
9 Correct 35 ms 4828 KB Output is correct
10 Correct 41 ms 4896 KB Output is correct
11 Correct 54 ms 4904 KB Output is correct
12 Correct 38 ms 4976 KB Output is correct
13 Correct 30 ms 4896 KB Output is correct
14 Correct 49 ms 4884 KB Output is correct
15 Correct 44 ms 4808 KB Output is correct
16 Correct 36 ms 4888 KB Output is correct
17 Correct 30 ms 5020 KB Output is correct
18 Correct 42 ms 4976 KB Output is correct
19 Correct 51 ms 4812 KB Output is correct
20 Correct 33 ms 4928 KB Output is correct
21 Correct 67 ms 4840 KB Output is correct
22 Correct 78 ms 7884 KB Output is correct
23 Correct 61 ms 7952 KB Output is correct
24 Correct 65 ms 7888 KB Output is correct
25 Correct 69 ms 7892 KB Output is correct
26 Correct 71 ms 7996 KB Output is correct
27 Correct 61 ms 7948 KB Output is correct
28 Correct 60 ms 7960 KB Output is correct
29 Correct 69 ms 8008 KB Output is correct
30 Correct 71 ms 8012 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 332 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 340 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 212 KB Output is correct
40 Correct 1 ms 324 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 336 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 324 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 324 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 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 372 KB Output is correct
55 Correct 1 ms 336 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 468 KB Output is correct
60 Correct 1 ms 368 KB Output is correct
61 Correct 101 ms 7544 KB Output is correct
62 Correct 99 ms 7836 KB Output is correct
63 Correct 82 ms 7508 KB Output is correct
64 Correct 89 ms 7772 KB Output is correct
65 Correct 105 ms 7764 KB Output is correct
66 Correct 102 ms 7736 KB Output is correct
67 Correct 93 ms 7636 KB Output is correct
68 Correct 69 ms 7716 KB Output is correct
69 Correct 65 ms 7616 KB Output is correct
70 Correct 62 ms 7560 KB Output is correct