oj.uz

Submission #395939

# Submission time Handle Problem Language Result Execution time Memory
395939 2021-04-29T08:49:37 Z usachevd0 The Big Prize (IOI17_prize) C++17
90 / 100
 109 ms 2636 KB 
#include <bits/stdc++.h>
#ifndef DEBUG
  #include "prize.h"
#endif

using namespace std;

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define all(a) (a).begin(), (a).end()
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
using ld = long double;
template<typename T1, typename T2> bool chkmin(T1 &x, T2 y) {
  return y < x ? (x = y, true) : false; 
}
template<typename T1, typename T2> bool chkmax(T1 &x, T2 y) {
  return y > x ? (x = y, true) : false;
}
void debug_out() {
  cerr << endl;
}
template<typename T1, typename... T2> void debug_out(T1 A, T2... B) {
  cerr << ' ' << A;
  debug_out(B...);
}
template<typename T> void mdebug_out(T* a, int n) {
  for (int i = 0; i < n; ++i) {
    cerr << a[i] << ' ';
  }
  cerr << endl;
}
#ifdef DEBUG
  #define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
  #define mdebug(a, n) cerr << #a << ": ", mdebug_out(a, n)
#else
  #define debug(...) 1337
  #define mdebug(a, n) 1337
#endif
template<typename T> ostream& operator << (ostream& stream, const vector<T> &v) {
  for (auto& x : v) {
    stream << x << ' ';
  }
  return stream;
}
template<typename T1, typename T2> ostream& operator << (ostream& stream, const pair<T1, T2>& p) {
  return stream << p.first << ' ' << p.second;
}

const int maxN = 200005;

#ifdef DEBUG
  int a[maxN];
  int cnt[maxN];
  pii f[maxN];
  vector<int> ask(int i) {
    return {f[i].fi, f[i].se};
  }
#endif

pii res[maxN];
int val[maxN];
set<int> vals;

pii Ask(int i) {
  if (res[i].fi != -1) {
    return res[i];
  }
  auto a = ask(i);
  val[i] = a[0] + a[1];
  vals.insert(val[i]);
  return res[i] = {a[0], a[1]};
}

int find_best(int n) {
  memset(res, 255, sizeof res);
  memset(val, 255, sizeof val);
  vals.clear();

  #define ASK(i) Ask(i); if (!val[i]) return i

  int i = 0;
  while (i < n) {
    ASK(i);
    bool i_not_max = val[i] != *vals.rbegin();
    int vl = i;
    int vr = n;
    while (vr - vl > 1 && !i_not_max) {
      int vm = (vl + vr) >> 1;
      ASK(vm);
      if (val[vm] == val[i]) {
        if (res[i].fi == res[vm].fi) {
          vl = vm;
        } else {
          vr = vm;
        }
      } else if (val[vm] > val[i]) {
        i_not_max = true;
        break;
      } else {
        vr = vm;
      }
    }
    if (i_not_max) {
      ++i;
      continue;
    }
    ASK(vr);
    i = vr + 1;
  }
  throw;
}

#ifdef DEBUG
int32_t main() {
#ifdef DEBUG
  freopen("in", "r", stdin);
#endif
  ios::sync_with_stdio(0);
  cin.tie(0);

  mt19937 rng(228);
  int n = 5;
  int C = 3;
  for (int itr = 1; ; ++itr) {
    int M = -1e9;
    int one_i = rng() % n;
    a[one_i] = 1;
    fill(cnt, cnt + C + 1, 0);
    for (int i = 0; i < n; ++i) {
      if (i != one_i) {
        a[i] = rng() % (C - 1) + 2;
      }
      chkmax(M, a[i]);
      ++cnt[a[i]];
      f[i].fi = accumulate(cnt, cnt + a[i], 0);
    }
    bool bad = false;
    for (int k = 2; k <= M; ++k) {
      if (cnt[k] <= cnt[k - 1] * (ll)cnt[k - 1]) {
        bad = true;
        break;
      }
    }
    if (bad) continue;
    fill(cnt, cnt + C + 1, 0);
    for (int i = n - 1; i >= 0; --i) {
      ++cnt[a[i]];
      f[i].se = accumulate(cnt, cnt + a[i], 0);
    }
    int i = find_best(n);
    assert(0 <= i && i < n && a[i] == 1);
    debug(itr);
  }
  /*int n;
  cin >> n;
  for (int i = 0; i < n; ++i) {
    cin >> a[i];
    ++cnt[a[i]];
    f[i].fi = accumulate(cnt, cnt + a[i], 0);
  }
  fill(cnt, cnt + n + 1, 0);
  for (int i = n - 1; i >= 0; --i) {
    ++cnt[a[i]];
    f[i].se = accumulate(cnt, cnt + a[i], 0);
  }
  mdebug(f, n);
  int i = find_best(n);
  debug(i);
  assert(0 <= i && i < n && a[i] == 1);*/
    
  return 0;
}
#endif

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2632 KB Output is correct
2 Correct 2 ms 2632 KB Output is correct
3 Correct 2 ms 2632 KB Output is correct
4 Correct 2 ms 2580 KB Output is correct
5 Correct 2 ms 2604 KB Output is correct
6 Correct 2 ms 2632 KB Output is correct
7 Correct 2 ms 2632 KB Output is correct
8 Correct 2 ms 2596 KB Output is correct
9 Correct 2 ms 2592 KB Output is correct
10 Correct 2 ms 2632 KB Output is correct

Subtask #2
70.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2624 KB Output is correct
2 Correct 2 ms 2600 KB Output is correct
3 Correct 2 ms 2508 KB Output is correct
4 Correct 2 ms 2588 KB Output is correct
5 Correct 3 ms 2632 KB Output is correct
6 Correct 2 ms 2580 KB Output is correct
7 Correct 2 ms 2600 KB Output is correct
8 Correct 2 ms 2596 KB Output is correct
9 Correct 2 ms 2632 KB Output is correct
10 Correct 2 ms 2632 KB Output is correct
11 Correct 3 ms 2624 KB Output is correct
12 Correct 2 ms 2592 KB Output is correct
13 Correct 12 ms 2632 KB Output is correct
14 Correct 4 ms 2632 KB Output is correct
15 Correct 17 ms 2592 KB Output is correct
16 Partially correct 82 ms 2632 KB Partially correct - number of queries: 6747
17 Correct 2 ms 2596 KB Output is correct
18 Partially correct 66 ms 2632 KB Partially correct - number of queries: 7887
19 Correct 2 ms 2588 KB Output is correct
20 Correct 25 ms 2632 KB Output is correct
21 Correct 20 ms 2600 KB Output is correct
22 Correct 5 ms 2632 KB Output is correct
23 Correct 2 ms 2616 KB Output is correct
24 Correct 2 ms 2632 KB Output is correct
25 Correct 56 ms 2588 KB Output is correct
26 Correct 51 ms 2496 KB Output is correct
27 Correct 2 ms 2600 KB Output is correct
28 Partially correct 93 ms 2500 KB Partially correct - number of queries: 7428
29 Partially correct 74 ms 2632 KB Partially correct - number of queries: 5636
30 Partially correct 50 ms 2632 KB Partially correct - number of queries: 7844
31 Correct 2 ms 2576 KB Output is correct
32 Correct 8 ms 2636 KB Output is correct
33 Correct 2 ms 2632 KB Output is correct
34 Correct 39 ms 2572 KB Output is correct
35 Correct 4 ms 2632 KB Output is correct
36 Correct 10 ms 2580 KB Output is correct
37 Correct 3 ms 2624 KB Output is correct
38 Correct 3 ms 2576 KB Output is correct
39 Correct 46 ms 2632 KB Output is correct
40 Partially correct 33 ms 2632 KB Partially correct - number of queries: 6730
41 Correct 58 ms 2580 KB Output is correct
42 Correct 56 ms 2632 KB Output is correct
43 Correct 58 ms 2632 KB Output is correct
44 Correct 20 ms 2596 KB Output is correct
45 Correct 25 ms 2576 KB Output is correct
46 Correct 2 ms 2496 KB Output is correct
47 Correct 19 ms 2632 KB Output is correct
48 Partially correct 58 ms 2496 KB Partially correct - number of queries: 5851
49 Correct 5 ms 2592 KB Output is correct
50 Partially correct 37 ms 2624 KB Partially correct - number of queries: 7890
51 Correct 19 ms 2588 KB Output is correct
52 Correct 2 ms 2588 KB Output is correct
53 Correct 2 ms 2632 KB Output is correct
54 Correct 18 ms 2580 KB Output is correct
55 Correct 2 ms 2604 KB Output is correct
56 Partially correct 73 ms 2588 KB Partially correct - number of queries: 7890
57 Partially correct 28 ms 2588 KB Partially correct - number of queries: 5767
58 Partially correct 66 ms 2624 KB Partially correct - number of queries: 5839
59 Correct 60 ms 2584 KB Output is correct
60 Correct 59 ms 2600 KB Output is correct
61 Correct 2 ms 2600 KB Output is correct
62 Correct 2 ms 2576 KB Output is correct
63 Correct 3 ms 2592 KB Output is correct
64 Correct 2 ms 2624 KB Output is correct
65 Correct 2 ms 2624 KB Output is correct
66 Correct 7 ms 2624 KB Output is correct
67 Correct 2 ms 2592 KB Output is correct
68 Correct 8 ms 2592 KB Output is correct
69 Correct 7 ms 2624 KB Output is correct
70 Correct 2 ms 2624 KB Output is correct
71 Partially correct 108 ms 2632 KB Partially correct - number of queries: 7757
72 Correct 9 ms 2596 KB Output is correct
73 Partially correct 95 ms 2600 KB Partially correct - number of queries: 7648
74 Partially correct 83 ms 2632 KB Partially correct - number of queries: 7690
75 Correct 4 ms 2632 KB Output is correct
76 Partially correct 76 ms 2632 KB Partially correct - number of queries: 6628
77 Partially correct 78 ms 2600 KB Partially correct - number of queries: 7919
78 Correct 8 ms 2632 KB Output is correct
79 Correct 53 ms 2608 KB Output is correct
80 Partially correct 89 ms 2632 KB Partially correct - number of queries: 7911
81 Partially correct 109 ms 2596 KB Partially correct - number of queries: 7936
82 Partially correct 74 ms 2632 KB Partially correct - number of queries: 7882
83 Correct 3 ms 2632 KB Output is correct
84 Partially correct 52 ms 2632 KB Partially correct - number of queries: 6461
85 Partially correct 90 ms 2632 KB Partially correct - number of queries: 7913
86 Partially correct 58 ms 2632 KB Partially correct - number of queries: 6348
87 Correct 7 ms 2632 KB Output is correct
88 Partially correct 83 ms 2632 KB Partially correct - number of queries: 5979
89 Partially correct 87 ms 2600 KB Partially correct - number of queries: 6305
90 Correct 2 ms 2632 KB Output is correct
91 Correct 41 ms 2632 KB Output is correct
92 Correct 38 ms 2632 KB Output is correct
93 Correct 8 ms 2632 KB Output is correct
94 Correct 8 ms 2636 KB Output is correct
95 Correct 8 ms 2632 KB Output is correct
96 Correct 6 ms 2628 KB Output is correct
97 Correct 2 ms 2632 KB Output is correct