oj.uz

Submission #314719

# Submission time Handle Problem Language Result Execution time Memory
314719 2020-10-20T23:35:36 Z VROOM_VARUN Rice Hub (IOI11_ricehub) C++14
100 / 100
 18 ms 2432 KB 
/*
ID: varunra2
LANG: C++
TASK: besthub
*/

#include <bits/stdc++.h>
// #include "ricehub.h"
using namespace std;

#ifdef DEBUG
#include "lib/debug.h"
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define debug_arr(...) \
  cerr << "[" << #__VA_ARGS__ << "]:", debug_arr(__VA_ARGS__)
#pragma GCC diagnostic ignored "-Wsign-compare"
//#pragma GCC diagnostic ignored "-Wunused-parameter"
//#pragma GCC diagnostic ignored "-Wunused-variable"
#else
#define debug(...) 42
#endif

#define EPS 1e-9
#define IN(A, B, C) assert(B <= A && A <= C)
#define INF (int)1e9
#define MEM(a, b) memset(a, (b), sizeof(a))
#define MOD 1000000007
#define MP make_pair
#define PB push_back
#define all(cont) cont.begin(), cont.end()
#define rall(cont) cont.end(), cont.begin()
#define x first
#define y second

const double PI = acos(-1.0);
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef map<int, int> MPII;
typedef multiset<int> MSETI;
typedef set<int> SETI;
typedef set<string> SETS;
typedef vector<int> VI;
typedef vector<PII> VII;
typedef vector<VI> VVI;
typedef vector<string> VS;

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define trav(a, x) for (auto& a : x)
#define sz(x) (int)(x).size()
typedef pair<int, int> pii;
typedef vector<int> vi;
#pragma GCC diagnostic ignored "-Wsign-compare"
// util functions

vector<ll> pref;
vector<ll> vals;

ll qry(int l, int r) {
  if (r < 0) return 0;
  return pref[r] - (l ? pref[l - 1] : 0);
}
ll calc(int l, int r) {
  int mid = (l + r) / 2;
  ll lc, rc;
  lc = 1ll * vals[mid] * (mid - l) - 1ll * qry(l, mid - 1);
  rc = 1ll * qry(mid + 1, r) - 1ll * vals[mid] * (r - mid);
  return lc + rc;
}

int besthub(int n, int m, int* val, long long bud) {
  pref.resize(n);
  vals.resize(n);
  for (int i = 0; i < n; i++) {
    vals[i] = val[i];
    pref[i] = vals[i];
  }
  partial_sum(all(pref), pref.begin());

  int p1 = 0, p2 = 0;

  int ret = 0;

  while (p1 < n) {
    while (p2 + 1 < n and calc(p1, p2 + 1) <= bud) p2++;
    ret = max(ret, p2 - p1 + 1);
    p1++;
  }

  return ret;
}

// int32_t main() {
// #ifndef ONLINE_JUDGE
//   freopen("besthub.in", "r", stdin);
//   freopen("besthub.out", "w", stdout);
// #endif
//   cin.sync_with_stdio(0);
//   cin.tie(0);

//   int n, m, bud;

//   cin >> n >> m >> bud;

//   int vals[n];

//   for (int i = 0; i < n; i++) {
//     cin >> vals[i];
//   }

//   debug(besthub(n, m, vals, bud));

//   return 0;
// }

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 0 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 768 KB Output is correct
2 Correct 4 ms 768 KB Output is correct
3 Correct 18 ms 2304 KB Output is correct
4 Correct 18 ms 2304 KB Output is correct
5 Correct 8 ms 1280 KB Output is correct
6 Correct 10 ms 1280 KB Output is correct
7 Correct 14 ms 2304 KB Output is correct
8 Correct 17 ms 2304 KB Output is correct
9 Correct 7 ms 1280 KB Output is correct
10 Correct 7 ms 1280 KB Output is correct
11 Correct 18 ms 2432 KB Output is correct
12 Correct 18 ms 2304 KB Output is correct
13 Correct 8 ms 1280 KB Output is correct
14 Correct 8 ms 1280 KB Output is correct
15 Correct 14 ms 1792 KB Output is correct
16 Correct 14 ms 1792 KB Output is correct
17 Correct 16 ms 2048 KB Output is correct
18 Correct 17 ms 2048 KB Output is correct
19 Correct 17 ms 2176 KB Output is correct
20 Correct 17 ms 2176 KB Output is correct