oj.uz

답안 #936724

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
936724 2024-03-02T15:36:32 Z GrindMachine 드문 곤충 (IOI22_insects) C++17
99.78 / 100
 30 ms 1364 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
using namespace std;
using namespace __gnu_pbds;
 
template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
 
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl
 
#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)
 
template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}
 
template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}
 
#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif
 
/*
 
refs:
https://youtu.be/mm5Nv81P5u8?t=19948
edi
 
*/
 
const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;
 
#include "insects.h"

int min_cardinality(int n) {
    vector<int> uniq_guys;

    rep(i,n){
        move_inside(i);
        int res = press_button();
        if(res >= 2){
            move_outside(i);
        }
        else{
            uniq_guys.pb(i);
        }
    }

    trav(i,uniq_guys){
        move_outside(i);
    }
    
    if(sz(uniq_guys) == 1){
        return n;
    }

    if(sz(uniq_guys) == n){
        return 1;
    }

    vector<bool> ignore(n);
    vector<int> in_machine;

    auto ok = [&](int mid){
        // check if ans <= mid
        // check if ans < mid+1

        vector<int> good, bad;
 
        rev(i,n-1,0){
            if(ignore[i]) conts;
            move_inside(i);
            int res = press_button();
            if(res > mid+1){
                bad.pb(i);
                move_outside(i);
            }
            else{
                good.pb(i);
            }
        }

        if(sz(in_machine)+sz(good) == sz(uniq_guys)*(mid+1)){
            // everybody occurs at least mid+1 times
            // anybody in the machine would stay in the machine forever
            trav(i,good){
                in_machine.pb(i);
                ignore[i] = 1;
            }

            return false;
        }
        else{
            // at least one guy occurs < (mid+1) #of times
            // i.e at least one guys occurs <= mid #of times
            // right endpoint of range decreases
            // so ignore all bad guys in future iterations
            // remove all good guys in this iteration from the machine
            trav(i,bad){
                ignore[i] = 1;
            }
            trav(i,good){
                move_outside(i);
            }
            
            return true;
        }
    };

    int l = 1, r = n/sz(uniq_guys)-1;
    int ans = n/sz(uniq_guys);
 
    while(l <= r){
        int mid = (l+r) >> 1;
        // is min <= mid?
        if(ok(mid)){
            ans = mid;
            r = mid-1;
        }
        else{
            l = mid+1;
        }
    }
 
    return ans;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 3 ms 600 KB Output is correct
9 Correct 2 ms 600 KB Output is correct
10 Correct 2 ms 436 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 2 ms 600 KB Output is correct
13 Correct 2 ms 428 KB Output is correct
14 Correct 2 ms 432 KB Output is correct
15 Correct 3 ms 600 KB Output is correct
16 Correct 2 ms 600 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 4 ms 344 KB Output is correct
19 Correct 5 ms 436 KB Output is correct
20 Correct 3 ms 600 KB Output is correct
21 Correct 2 ms 600 KB Output is correct
22 Correct 1 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 3 ms 600 KB Output is correct
9 Correct 2 ms 600 KB Output is correct
10 Correct 2 ms 436 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 2 ms 600 KB Output is correct
13 Correct 2 ms 428 KB Output is correct
14 Correct 2 ms 432 KB Output is correct
15 Correct 3 ms 600 KB Output is correct
16 Correct 2 ms 600 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 4 ms 344 KB Output is correct
19 Correct 5 ms 436 KB Output is correct
20 Correct 3 ms 600 KB Output is correct
21 Correct 2 ms 600 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 5 ms 344 KB Output is correct
24 Correct 4 ms 600 KB Output is correct
25 Correct 12 ms 856 KB Output is correct
26 Correct 13 ms 848 KB Output is correct
27 Correct 11 ms 436 KB Output is correct
28 Correct 5 ms 600 KB Output is correct
29 Correct 12 ms 688 KB Output is correct
30 Correct 12 ms 692 KB Output is correct
31 Correct 12 ms 944 KB Output is correct
32 Correct 15 ms 700 KB Output is correct
33 Correct 12 ms 668 KB Output is correct
34 Correct 13 ms 600 KB Output is correct
35 Correct 11 ms 664 KB Output is correct
36 Correct 11 ms 432 KB Output is correct
37 Correct 10 ms 1112 KB Output is correct
38 Correct 11 ms 432 KB Output is correct
39 Correct 11 ms 688 KB Output is correct
40 Correct 9 ms 872 KB Output is correct
41 Correct 6 ms 596 KB Output is correct

Subtask #3
74.78 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 8 ms 344 KB Output is correct
8 Correct 8 ms 860 KB Output is correct
9 Correct 26 ms 848 KB Output is correct
10 Correct 24 ms 672 KB Output is correct
11 Correct 22 ms 924 KB Output is correct
12 Correct 17 ms 432 KB Output is correct
13 Correct 25 ms 932 KB Output is correct
14 Correct 26 ms 672 KB Output is correct
15 Correct 25 ms 672 KB Output is correct
16 Correct 23 ms 852 KB Output is correct
17 Correct 29 ms 856 KB Output is correct
18 Correct 28 ms 676 KB Output is correct
19 Partially correct 29 ms 928 KB Output is partially correct
20 Correct 25 ms 592 KB Output is correct
21 Correct 25 ms 692 KB Output is correct
22 Partially correct 24 ms 848 KB Output is partially correct
23 Correct 23 ms 600 KB Output is correct
24 Correct 22 ms 436 KB Output is correct
25 Correct 18 ms 684 KB Output is correct
26 Correct 9 ms 608 KB Output is correct
27 Correct 22 ms 692 KB Output is correct
28 Correct 22 ms 856 KB Output is correct
29 Partially correct 28 ms 692 KB Output is partially correct
30 Partially correct 21 ms 588 KB Output is partially correct
31 Correct 30 ms 672 KB Output is correct
32 Correct 27 ms 680 KB Output is correct
33 Correct 26 ms 1112 KB Output is correct
34 Correct 28 ms 688 KB Output is correct
35 Partially correct 29 ms 672 KB Output is partially correct
36 Partially correct 27 ms 924 KB Output is partially correct
37 Correct 27 ms 424 KB Output is correct
38 Correct 28 ms 928 KB Output is correct
39 Correct 25 ms 928 KB Output is correct
40 Correct 26 ms 672 KB Output is correct
41 Partially correct 30 ms 848 KB Output is partially correct
42 Partially correct 27 ms 924 KB Output is partially correct
43 Correct 6 ms 596 KB Output is correct
44 Correct 22 ms 600 KB Output is correct
45 Correct 29 ms 668 KB Output is correct
46 Correct 17 ms 936 KB Output is correct
47 Correct 18 ms 1364 KB Output is correct
48 Correct 16 ms 696 KB Output is correct