oj.uz

Submission #1055687

# Submission time Handle Problem Language Result Execution time Memory
1055687 2024-08-13T03:14:54 Z thieunguyenhuy The Big Prize (IOI17_prize) C++17
20 / 100
 47 ms 1840 KB 
#ifndef hwe
    #include "prize.h"
#endif
 
#include <bits/stdc++.h>
using namespace std;
 
#define popcount(n) (__builtin_popcountll((n)))
#define clz(n) (__builtin_clzll((n)))
#define ctz(n) (__builtin_ctzll((n)))
#define lg(n) (63 - __builtin_clzll((n)))
#define BIT(n, i) (((n) >> (i)) & 1ll)
#define MASK(i) (1ll << (i))
#define FLIP(n, i) ((n) ^ (1ll << (i)))
#define ON(n, i) ((n) | MASK(i))
#define OFF(n, i) ((n) & ~MASK(i))
 
#define Int __int128
#define fi first
#define se second
 
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long long, int> pli;
typedef pair<int, long long> pil;
typedef vector<pair<int, int>> vii;
typedef vector<pair<long long, long long>> vll;
typedef vector<pair<long long, int>> vli;
typedef vector<pair<int, long long>> vil;
 
template <class T1, class T2>
bool maximize(T1 &x, T2 y) {
    if (x < y) {
        x = y;
        return true;
    }
    return false;
}
template <class T1, class T2>
bool minimize(T1 &x, T2 y) {
    if (x > y) {
        x = y;
        return true;
    }
    return false;
}
 
template <class T>
void remove_duplicate(vector<T> &ve) {
    sort (ve.begin(), ve.end());
    ve.resize(unique(ve.begin(), ve.end()) - ve.begin());
}
 
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
template <class T> T random(T l, T r) {
    return uniform_int_distribution<T>(l, r)(rng);
}
template <class T> T random(T r) {
    return rng() % r;
}
 
const int N = 1e6 + 5;
const int MOD = 1e9 + 7;
const int inf = 1e9;
const ll INF = 1e18;
 
map<int, vector<int>> mem;
int ans = -1, not_lolipop = -1, counter = 0;
 
#ifdef hwe
vector<int> ask(int id) {
    return {0, 1};
}
#endif
 
vector<int> myask(int id) {
    auto it = mem.find(id);
    if (it != mem.end()) return mem[id];
    vector<int> tmp = ask(id); mem[id] = tmp;
    if (tmp[0] + tmp[1] == 0) ans = id;
    return tmp;
}
 
void dnc(int l, int r, int prefL, int prefR) {
    if (ans != -1) return;
    if (prefR - prefL == 0) return;
    
    if (l == r) {
        myask(l);
        return;
    }
 
    int mid = l + r >> 1; int pref_mid = 0;
 
    for (int i = mid; i >= l; --i) {
        vector<int> tmp = myask(i);
        if (tmp[0] + tmp[1] == not_lolipop) {
            pref_mid += tmp[0];
            break;
        }
        ++pref_mid;
    }
 
    dnc(l, mid, prefL, pref_mid);
    dnc(mid + 1, r, pref_mid, prefR);
}

void find_lolipop(int l, int r) {
    if (ans != -1) return;
    if (counter == 550) return;

    int mid = l + r >> 1; vector<int> ask_mid = myask(mid); ++counter;
    maximize(not_lolipop, ask_mid[0] + ask_mid[1]);

    if (l == r) return;

    find_lolipop(l, mid);
    find_lolipop(mid + 1, r);
}
 
int find_best(int n) {
    ans = not_lolipop = -1; counter = 0;

    find_lolipop(0, n - 1); 
    dnc(0, n - 1, 0, not_lolipop);
 
    assert(0 <= ans && ans < n);
    return ans;
}
 
#ifdef hwe
signed main() {
 
 
    cerr << '\n'; return 0;
}
#endif

Compilation message

prize.cpp: In function 'void dnc(int, int, int, int)':
prize.cpp:96:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   96 |     int mid = l + r >> 1; int pref_mid = 0;
      |               ~~^~~
prize.cpp: In function 'void find_lolipop(int, int)':
prize.cpp:115:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  115 |     int mid = l + r >> 1; vector<int> ask_mid = myask(mid); ++counter;
      |               ~~^~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 2 ms 344 KB Output is correct
3 Correct 2 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 2 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 3 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 2 ms 464 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 2 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 432 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 4 ms 428 KB Output is correct
16 Correct 18 ms 832 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 21 ms 1076 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 7 ms 344 KB Output is correct
21 Correct 6 ms 600 KB Output is correct
22 Correct 2 ms 344 KB Output is correct
23 Correct 2 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 13 ms 804 KB Output is correct
26 Correct 13 ms 660 KB Output is correct
27 Correct 2 ms 344 KB Output is correct
28 Correct 15 ms 856 KB Output is correct
29 Correct 9 ms 600 KB Output is correct
30 Correct 21 ms 1104 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 2 ms 344 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 10 ms 432 KB Output is correct
35 Correct 3 ms 344 KB Output is correct
36 Correct 5 ms 444 KB Output is correct
37 Correct 3 ms 344 KB Output is correct
38 Correct 2 ms 344 KB Output is correct
39 Correct 7 ms 600 KB Output is correct
40 Correct 11 ms 844 KB Output is correct
41 Correct 15 ms 600 KB Output is correct
42 Correct 9 ms 564 KB Output is correct
43 Correct 12 ms 632 KB Output is correct
44 Correct 11 ms 1108 KB Output is correct
45 Correct 7 ms 344 KB Output is correct
46 Correct 2 ms 344 KB Output is correct
47 Correct 9 ms 856 KB Output is correct
48 Correct 15 ms 1000 KB Output is correct
49 Correct 3 ms 344 KB Output is correct
50 Correct 25 ms 844 KB Output is correct
51 Correct 12 ms 600 KB Output is correct
52 Correct 1 ms 344 KB Output is correct
53 Correct 2 ms 344 KB Output is correct
54 Correct 8 ms 672 KB Output is correct
55 Correct 1 ms 344 KB Output is correct
56 Correct 20 ms 944 KB Output is correct
57 Correct 15 ms 660 KB Output is correct
58 Correct 17 ms 664 KB Output is correct
59 Correct 12 ms 900 KB Output is correct
60 Correct 12 ms 600 KB Output is correct
61 Correct 1 ms 344 KB Output is correct
62 Correct 2 ms 344 KB Output is correct
63 Correct 2 ms 344 KB Output is correct
64 Correct 1 ms 344 KB Output is correct
65 Correct 2 ms 600 KB Output is correct
66 Correct 5 ms 1012 KB Output is correct
67 Correct 2 ms 428 KB Output is correct
68 Correct 2 ms 344 KB Output is correct
69 Correct 3 ms 344 KB Output is correct
70 Correct 2 ms 344 KB Output is correct
71 Partially correct 18 ms 1104 KB Partially correct - number of queries: 5021
72 Correct 3 ms 344 KB Output is correct
73 Correct 20 ms 1104 KB Output is correct
74 Correct 20 ms 848 KB Output is correct
75 Correct 2 ms 344 KB Output is correct
76 Correct 21 ms 796 KB Output is correct
77 Correct 22 ms 976 KB Output is correct
78 Correct 3 ms 344 KB Output is correct
79 Correct 10 ms 600 KB Output is correct
80 Correct 20 ms 800 KB Output is correct
81 Correct 30 ms 784 KB Output is correct
82 Correct 18 ms 812 KB Output is correct
83 Correct 2 ms 344 KB Output is correct
84 Correct 17 ms 856 KB Output is correct
85 Correct 18 ms 972 KB Output is correct
86 Correct 4 ms 344 KB Output is correct
87 Correct 3 ms 344 KB Output is correct
88 Correct 4 ms 344 KB Output is correct
89 Correct 3 ms 344 KB Output is correct
90 Correct 2 ms 344 KB Output is correct
91 Correct 3 ms 344 KB Output is correct
92 Correct 4 ms 344 KB Output is correct
93 Incorrect 47 ms 1840 KB Incorrect
94 Halted 0 ms 0 KB -