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Submission #1005518

# Submission time Handle Problem Language Result Execution time Memory
1005518 2024-06-22T14:31:52 Z khanhtb Rarest Insects (IOI22_insects) C++17
100 / 100
 45 ms 1732 KB 
#include<bits/stdc++.h>
#include "insects.h"
#define ll int
#define ull unsigned long long
#define ld double
#define pb push_back
#define pf push_front
#define vi vector<ll>
#define vii vector<vi>
#define pll pair<ll,ll>
#define vpll vector<pll>
#define all(a) a.begin(), a.end()
#define fi first
#define se second
using namespace std;
const ll mod = 1e9+7;
const ll inf = 1e18;
const ll base = 31;
const ll blocksz = 320;
const ll N = 1e5+8;
set<int> in_machine;
map<int,set<int>> max_k;
vector<int> reset;
int n,d,a[N];
void add(ll i){
    move_inside(a[i]);
    in_machine.insert(i);
}
void del(ll i){
    move_outside(a[i]);
    in_machine.erase(in_machine.find(i));
}
bool check(int m){
    reset.clear();
    auto mk = *max_k.lower_bound(m);
    for(int p:mk.se){
        if(in_machine.find(p) != in_machine.end()) continue;
        if((int)in_machine.size() >= d*m) return 1;
        add(p);
        if(press_button() > m) del(p);
        else reset.pb(p);
    }
    max_k[m] = in_machine;
    if((int)in_machine.size() >= d*m) return 1;
    return 0;
}
int min_cardinality(int n){
    iota(a,a+n,0LL);
    shuffle(a,a+n,default_random_engine(1));
    for(int i = 0; i < n; i++){
        add(i);
        if(press_button() > 1) del(i);
    }
    d = (int)in_machine.size();
    max_k[1] = in_machine;
    for(int i = 0; i < n; i++) max_k[n].insert(i);
    int ans = 1;
    int l = 2, r = n/d;
    while(l <= r){
        int m = l+r>>1;
        if(check(m)){
            ans = m;
            l = m+1;
        }
        else{
            r = m-1;
            for(int i:reset) del(i);
        }
    }
    return ans;
}

Compilation message

insects.cpp:17:16: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   17 | const ll inf = 1e18;
      |                ^~~~
insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:60:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   60 |         int m = l+r>>1;
      |                 ~^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory 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 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 2 ms 444 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 3 ms 460 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 4 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 4 ms 700 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory 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 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 2 ms 444 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 3 ms 460 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 4 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 4 ms 700 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 9 ms 600 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 13 ms 576 KB Output is correct
26 Correct 15 ms 812 KB Output is correct
27 Correct 13 ms 600 KB Output is correct
28 Correct 5 ms 452 KB Output is correct
29 Correct 14 ms 552 KB Output is correct
30 Correct 13 ms 568 KB Output is correct
31 Correct 11 ms 600 KB Output is correct
32 Correct 11 ms 600 KB Output is correct
33 Correct 16 ms 728 KB Output is correct
34 Correct 11 ms 568 KB Output is correct
35 Correct 9 ms 600 KB Output is correct
36 Correct 11 ms 600 KB Output is correct
37 Correct 12 ms 556 KB Output is correct
38 Correct 12 ms 704 KB Output is correct
39 Correct 7 ms 344 KB Output is correct
40 Correct 5 ms 600 KB Output is correct
41 Correct 5 ms 344 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory 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 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 29 ms 848 KB Output is correct
8 Correct 9 ms 540 KB Output is correct
9 Correct 32 ms 676 KB Output is correct
10 Correct 33 ms 952 KB Output is correct
11 Correct 26 ms 852 KB Output is correct
12 Correct 25 ms 732 KB Output is correct
13 Correct 30 ms 940 KB Output is correct
14 Correct 23 ms 592 KB Output is correct
15 Correct 29 ms 1104 KB Output is correct
16 Correct 21 ms 848 KB Output is correct
17 Correct 19 ms 928 KB Output is correct
18 Correct 20 ms 848 KB Output is correct
19 Correct 16 ms 848 KB Output is correct
20 Correct 28 ms 1104 KB Output is correct
21 Correct 42 ms 848 KB Output is correct
22 Correct 21 ms 848 KB Output is correct
23 Correct 24 ms 924 KB Output is correct
24 Correct 19 ms 716 KB Output is correct
25 Correct 13 ms 1732 KB Output is correct
26 Correct 12 ms 600 KB Output is correct
27 Correct 28 ms 848 KB Output is correct
28 Correct 20 ms 600 KB Output is correct
29 Correct 21 ms 660 KB Output is correct
30 Correct 27 ms 904 KB Output is correct
31 Correct 32 ms 916 KB Output is correct
32 Correct 41 ms 1104 KB Output is correct
33 Correct 35 ms 960 KB Output is correct
34 Correct 35 ms 676 KB Output is correct
35 Correct 21 ms 592 KB Output is correct
36 Correct 32 ms 684 KB Output is correct
37 Correct 45 ms 684 KB Output is correct
38 Correct 21 ms 848 KB Output is correct
39 Correct 28 ms 848 KB Output is correct
40 Correct 35 ms 592 KB Output is correct
41 Correct 26 ms 668 KB Output is correct
42 Correct 24 ms 712 KB Output is correct
43 Correct 4 ms 344 KB Output is correct
44 Correct 26 ms 444 KB Output is correct
45 Correct 23 ms 704 KB Output is correct
46 Correct 21 ms 704 KB Output is correct
47 Correct 13 ms 724 KB Output is correct
48 Correct 21 ms 720 KB Output is correct