oj.uz

Submission #961727

# Submission time Handle Problem Language Result Execution time Memory
961727 2024-04-12T11:17:48 Z steveonalex The Big Prize (IOI17_prize) C++17
97.23 / 100
 37 ms 3468 KB 
#include <bits/stdc++.h>
#include "prize.h"

 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define ALL(v) (v).begin(), (v).end()
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
 
// mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng(1);
ll rngesus(ll l, ll r){return ((ull) rng()) % (r - l + 1) + l;}
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
 
ll LASTBIT(ll mask){return mask & (-mask);}
ll pop_cnt(ll mask){return __builtin_popcountll(mask);}
ll ctz(ll mask){return __builtin_ctzll(mask);}
ll clz(ll mask){return __builtin_clzll(mask);}
ll logOf(ll mask){return 63 - clz(mask);}
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b){a = b; return true;}
        return false;
    }
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b){a = b; return true;}
        return false;
    }
template <class T>
    void printArr(T& a, string separator = " ", string finish = "\n"){
        for(auto i: a) cout << i << separator;
        cout << finish;
    }
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }
 
// namespace Interactor{
//     const int BLOCK = 400;
//     int n;
//     vector<int> a;

//     vector<int> ask(int i){
//         vector<int> ans(2);
//         for(int j = 0; j < i; ++j) ans[0] += (a[j] < a[i]);
//         for(int j = i+1; j<n; ++j) ans[1] += (a[j] < a[i]);
//         return ans;
//     }

    int range_query(set<int> &S, int l, int r){
        auto it = S.lower_bound(l);
        int cnt = 0;
        while(it != S.end()){
            if (*it > r) break;
            cnt++;
            it++;
        }
        return cnt;
    }

    void DnC(int l, int r, int ma, vector<pair<int, int>> &b, set<int> &S1, set<int> &S2){
        if (l > r) return;
        int x = (l + r) >> 1;
        if (b[x].first == -1){
            vector<int> cur= ask(x);
            b[x] = {cur[0], cur[1]};
        }
        if (b[x].first + b[x].second == ma){
            S1.insert(x);

            // look to the left
            auto it = S1.lower_bound(x); it--;
            int dL = b[x].first - b[*it].first;
            if (dL - range_query(S2, *it, x) > 0) DnC(l, x - 1, ma, b, S1, S2);

            // look to the right
            it = S1.upper_bound(x);
            if (it == S1.end()) {
                DnC(x + 1, r, ma, b, S1, S2);
                return;
            }
            dL = b[*it].first - b[x].first;
            if (dL - range_query(S2, x, *it) > 0) DnC(x + 1, r, ma, b, S1, S2);
        }
        else{
            S2.insert(x);
            DnC(l, x - 1, ma, b, S1, S2);
            DnC(x + 1, r, ma, b, S1, S2);
        }
    }

    int find_best(int n) {
        const int BLOCK = 500;
        vector<pair<int, int>> b(n, {-1, -1});
        if (n <= 1e4){
            for(int i = 0; i<n; ++i) {
                vector<int> cur = ask(i);
                if (cur[0] + cur[1] == 0) return i;
            }
        }
        int ma = 0;
        for(int i = 0; i<BLOCK; ++i){
            vector<int> cur = ask(i);
            b[i] = {cur[0], cur[1]};
            maximize(ma, cur[0] + cur[1]);
        }

        set<int> S1, S2;
        for(int i = 0; i<BLOCK; ++i){
            if (b[i].first + b[i].second == ma) S1.insert(i);
            else S2.insert(i);
        }

        DnC(BLOCK, n-1, ma, b, S1, S2);


        for(int i: S2) if (b[i].first + b[i].second == 0) return i;
        exit(-1);
        return -1;
    }

//     bool solve(){
//         n = 2e5;
//         a.resize(n, 3);
//         a[0] = 1;
//         for(int i = 1; i<=BLOCK; ++i) a[i] = 2;
//         // reverse(ALL(a));
//         shuffle(ALL(a), rng);

//         // printArr(a, "");

//         int j = find_best(n);
//         cout << "! " << j << "\n";
//         return a[j] == 1; 
//     }

// }

 
// int main(void){
//     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

//     bool verdict = Interactor::solve();
//     if (verdict) cout << "AC\n";
//     else cout << "WA\n";

//     return 0;
// }

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2016 KB Output is correct
2 Correct 3 ms 2012 KB Output is correct
3 Correct 3 ms 2020 KB Output is correct
4 Correct 3 ms 2012 KB Output is correct
5 Correct 3 ms 2016 KB Output is correct
6 Correct 3 ms 2016 KB Output is correct
7 Correct 3 ms 2016 KB Output is correct
8 Correct 5 ms 2020 KB Output is correct
9 Correct 3 ms 2016 KB Output is correct
10 Correct 4 ms 2020 KB Output is correct

Subtask #2
77.23 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2016 KB Output is correct
2 Correct 3 ms 2016 KB Output is correct
3 Correct 4 ms 2020 KB Output is correct
4 Correct 3 ms 2024 KB Output is correct
5 Correct 3 ms 2020 KB Output is correct
6 Correct 3 ms 2024 KB Output is correct
7 Correct 3 ms 2272 KB Output is correct
8 Correct 3 ms 2020 KB Output is correct
9 Correct 3 ms 2016 KB Output is correct
10 Correct 3 ms 2020 KB Output is correct
11 Correct 5 ms 2296 KB Output is correct
12 Correct 5 ms 2048 KB Output is correct
13 Correct 5 ms 2292 KB Output is correct
14 Correct 7 ms 1132 KB Output is correct
15 Correct 23 ms 2672 KB Output is correct
16 Partially correct 30 ms 2964 KB Partially correct - number of queries: 5146
17 Partially correct 24 ms 3428 KB Partially correct - number of queries: 5099
18 Partially correct 26 ms 2956 KB Partially correct - number of queries: 5098
19 Correct 22 ms 2888 KB Output is correct
20 Correct 17 ms 1816 KB Output is correct
21 Partially correct 25 ms 2568 KB Partially correct - number of queries: 5106
22 Correct 19 ms 2612 KB Output is correct
23 Correct 3 ms 2040 KB Output is correct
24 Correct 6 ms 2300 KB Output is correct
25 Correct 33 ms 2576 KB Output is correct
26 Correct 27 ms 2472 KB Output is correct
27 Correct 4 ms 2036 KB Output is correct
28 Correct 22 ms 2620 KB Output is correct
29 Correct 20 ms 2588 KB Output is correct
30 Partially correct 22 ms 3468 KB Partially correct - number of queries: 5060
31 Partially correct 37 ms 2368 KB Partially correct - number of queries: 5095
32 Correct 5 ms 2300 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Partially correct 25 ms 2040 KB Partially correct - number of queries: 5105
35 Correct 4 ms 2300 KB Output is correct
36 Partially correct 28 ms 2188 KB Partially correct - number of queries: 5070
37 Correct 5 ms 2044 KB Output is correct
38 Correct 3 ms 2048 KB Output is correct
39 Partially correct 29 ms 2932 KB Partially correct - number of queries: 5085
40 Correct 26 ms 2860 KB Output is correct
41 Partially correct 23 ms 2980 KB Partially correct - number of queries: 5133
42 Partially correct 32 ms 3444 KB Partially correct - number of queries: 5133
43 Correct 26 ms 2652 KB Output is correct
44 Partially correct 27 ms 2712 KB Partially correct - number of queries: 5119
45 Correct 28 ms 2376 KB Output is correct
46 Partially correct 33 ms 2592 KB Partially correct - number of queries: 5126
47 Correct 27 ms 2652 KB Output is correct
48 Partially correct 22 ms 2704 KB Partially correct - number of queries: 5112
49 Partially correct 27 ms 2904 KB Partially correct - number of queries: 5147
50 Partially correct 25 ms 2664 KB Partially correct - number of queries: 5094
51 Partially correct 28 ms 2884 KB Partially correct - number of queries: 5119
52 Partially correct 30 ms 2472 KB Partially correct - number of queries: 5099
53 Correct 3 ms 2036 KB Output is correct
54 Partially correct 26 ms 2676 KB Partially correct - number of queries: 5100
55 Partially correct 24 ms 3216 KB Partially correct - number of queries: 5109
56 Partially correct 32 ms 2904 KB Partially correct - number of queries: 5099
57 Partially correct 21 ms 2900 KB Partially correct - number of queries: 5097
58 Partially correct 33 ms 2308 KB Partially correct - number of queries: 5121
59 Partially correct 28 ms 3080 KB Partially correct - number of queries: 5143
60 Partially correct 27 ms 2972 KB Partially correct - number of queries: 5071
61 Correct 3 ms 2048 KB Output is correct
62 Correct 5 ms 2040 KB Output is correct
63 Correct 3 ms 2036 KB Output is correct
64 Correct 3 ms 2044 KB Output is correct
65 Correct 3 ms 2020 KB Output is correct
66 Correct 5 ms 2552 KB Output is correct
67 Correct 5 ms 2300 KB Output is correct
68 Correct 3 ms 2020 KB Output is correct
69 Correct 5 ms 2044 KB Output is correct
70 Correct 4 ms 2300 KB Output is correct
71 Partially correct 29 ms 2888 KB Partially correct - number of queries: 5259
72 Correct 5 ms 2056 KB Output is correct
73 Partially correct 27 ms 2824 KB Partially correct - number of queries: 5196
74 Partially correct 27 ms 2652 KB Partially correct - number of queries: 5223
75 Correct 3 ms 2044 KB Output is correct
76 Correct 23 ms 2936 KB Output is correct
77 Partially correct 32 ms 2624 KB Partially correct - number of queries: 5277
78 Correct 5 ms 2024 KB Output is correct
79 Correct 12 ms 2788 KB Output is correct
80 Partially correct 31 ms 2864 KB Partially correct - number of queries: 5262
81 Partially correct 31 ms 2640 KB Partially correct - number of queries: 5233
82 Partially correct 25 ms 2944 KB Partially correct - number of queries: 5175
83 Correct 4 ms 2272 KB Output is correct
84 Correct 23 ms 2900 KB Output is correct
85 Partially correct 30 ms 3440 KB Partially correct - number of queries: 5221
86 Correct 3 ms 2024 KB Output is correct
87 Correct 3 ms 2012 KB Output is correct
88 Correct 3 ms 2024 KB Output is correct
89 Correct 3 ms 2020 KB Output is correct
90 Correct 3 ms 2020 KB Output is correct
91 Correct 3 ms 2016 KB Output is correct
92 Correct 4 ms 2016 KB Output is correct
93 Correct 8 ms 2024 KB Output is correct
94 Correct 4 ms 2292 KB Output is correct
95 Correct 5 ms 2300 KB Output is correct
96 Correct 4 ms 2296 KB Output is correct
97 Correct 3 ms 2020 KB Output is correct