oj.uz

Submission #761045

# Submission time Handle Problem Language Result Execution time Memory
761045 2023-06-19T06:26:49 Z Khizri Rarest Insects (IOI22_insects) C++17
100 / 100
 52 ms 476 KB 
#include "insects.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define F first
#define S second
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
#define MOD (ll)(1e9+7)
#define endl "\n"
const int mxn=2e3+5;
int sz,n,cnt,color[mxn],color2[mxn];
set<int>ST;
bool check(int k){
    if(k==1) return 1;
    set<int>st;
    st=ST;
    vector<int>vt;
    for(int i=0;i<n;i++){
        vt.pb(i);
    }
    unsigned seed = std::chrono::system_clock::now().time_since_epoch().count();
    shuffle(vt.begin(),vt.end(),default_random_engine(seed));
    memset(color2,0,sizeof(color2));
    for(int id=0;id<n;id++){
        int i=vt[id];
        if(color[i]) continue;
        if(st.count(i)) continue;
        if(st.size()==cnt*k) break;
        move_inside(i);
        st.insert(i);
        if(press_button()>k){
            st.erase(i);
            color2[i]=1;
            move_outside(i);
        }
    }
    if(st.size()==cnt*k){
        ST=st;
        return 1;
    }
    else{
        for(int i=0;i<n;i++){
            if(!st.count(i)){
                color[i]=1;
            }
        }
        for(auto x:st){
            if(!ST.count(x)){
                move_outside(x);
            }
        }
        return 0;
    }
}
int min_cardinality(int N) {
    n=N;
    set<int>st;
    for(int i=0;i<n;i++){
        move_inside(i);
        cnt++;
        st.insert(i);
        if(press_button()>1){
            move_outside(i);
            st.erase(i);
            cnt--;
        }
    }
    for(auto x:st){
        move_outside(x);
    }
    if(cnt==1) return n;
    if(cnt==n) return 1;
    if(cnt>n/2) return 1;
    int l=1,r=n/cnt;
    while(l<=r){
        int m=(l+r)/2;
        if(check(m)){
            l=m+1;
        }
        else{
            r=m-1;
        }
    }
    return l-1;
}

Compilation message

insects.cpp: In function 'bool check(int)':
insects.cpp:34:21: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   34 |         if(st.size()==cnt*k) break;
      |            ~~~~~~~~~^~~~~~~
insects.cpp:43:17: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   43 |     if(st.size()==cnt*k){
      |        ~~~~~~~~~^~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 4 ms 332 KB Output is correct
9 Correct 6 ms 320 KB Output is correct
10 Correct 5 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 4 ms 304 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 2 ms 300 KB Output is correct
15 Correct 4 ms 208 KB Output is correct
16 Correct 4 ms 208 KB Output is correct
17 Correct 3 ms 300 KB Output is correct
18 Correct 4 ms 208 KB Output is correct
19 Correct 5 ms 308 KB Output is correct
20 Correct 4 ms 208 KB Output is correct
21 Correct 3 ms 308 KB Output is correct
22 Correct 2 ms 208 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 4 ms 332 KB Output is correct
9 Correct 6 ms 320 KB Output is correct
10 Correct 5 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 4 ms 304 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 2 ms 300 KB Output is correct
15 Correct 4 ms 208 KB Output is correct
16 Correct 4 ms 208 KB Output is correct
17 Correct 3 ms 300 KB Output is correct
18 Correct 4 ms 208 KB Output is correct
19 Correct 5 ms 308 KB Output is correct
20 Correct 4 ms 208 KB Output is correct
21 Correct 3 ms 308 KB Output is correct
22 Correct 2 ms 208 KB Output is correct
23 Correct 9 ms 208 KB Output is correct
24 Correct 9 ms 336 KB Output is correct
25 Correct 16 ms 320 KB Output is correct
26 Correct 23 ms 356 KB Output is correct
27 Correct 18 ms 304 KB Output is correct
28 Correct 9 ms 316 KB Output is correct
29 Correct 21 ms 308 KB Output is correct
30 Correct 21 ms 292 KB Output is correct
31 Correct 21 ms 304 KB Output is correct
32 Correct 21 ms 376 KB Output is correct
33 Correct 21 ms 296 KB Output is correct
34 Correct 20 ms 376 KB Output is correct
35 Correct 16 ms 300 KB Output is correct
36 Correct 22 ms 356 KB Output is correct
37 Correct 13 ms 324 KB Output is correct
38 Correct 17 ms 324 KB Output is correct
39 Correct 20 ms 312 KB Output is correct
40 Correct 17 ms 336 KB Output is correct
41 Correct 8 ms 320 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 9 ms 208 KB Output is correct
8 Correct 11 ms 340 KB Output is correct
9 Correct 44 ms 416 KB Output is correct
10 Correct 46 ms 328 KB Output is correct
11 Correct 44 ms 296 KB Output is correct
12 Correct 16 ms 368 KB Output is correct
13 Correct 49 ms 300 KB Output is correct
14 Correct 48 ms 288 KB Output is correct
15 Correct 39 ms 412 KB Output is correct
16 Correct 31 ms 448 KB Output is correct
17 Correct 24 ms 420 KB Output is correct
18 Correct 38 ms 408 KB Output is correct
19 Correct 47 ms 468 KB Output is correct
20 Correct 43 ms 440 KB Output is correct
21 Correct 25 ms 328 KB Output is correct
22 Correct 52 ms 328 KB Output is correct
23 Correct 33 ms 304 KB Output is correct
24 Correct 38 ms 308 KB Output is correct
25 Correct 33 ms 408 KB Output is correct
26 Correct 13 ms 336 KB Output is correct
27 Correct 35 ms 476 KB Output is correct
28 Correct 38 ms 428 KB Output is correct
29 Correct 43 ms 412 KB Output is correct
30 Correct 41 ms 404 KB Output is correct
31 Correct 51 ms 420 KB Output is correct
32 Correct 28 ms 364 KB Output is correct
33 Correct 39 ms 300 KB Output is correct
34 Correct 38 ms 296 KB Output is correct
35 Correct 35 ms 472 KB Output is correct
36 Correct 40 ms 448 KB Output is correct
37 Correct 51 ms 412 KB Output is correct
38 Correct 49 ms 412 KB Output is correct
39 Correct 35 ms 456 KB Output is correct
40 Correct 36 ms 428 KB Output is correct
41 Correct 41 ms 416 KB Output is correct
42 Correct 38 ms 456 KB Output is correct
43 Correct 10 ms 320 KB Output is correct
44 Correct 33 ms 284 KB Output is correct
45 Correct 31 ms 408 KB Output is correct
46 Correct 34 ms 328 KB Output is correct
47 Correct 30 ms 328 KB Output is correct
48 Correct 33 ms 300 KB Output is correct