oj.uz

Submission #783363

# Submission time Handle Problem Language Result Execution time Memory
783363 2023-07-14T21:40:12 Z FEDIKUS Rarest Insects (IOI22_insects) C++17
100 / 100
 52 ms 348 KB 
#include "insects.h"
#include<bits/stdc++.h>

using namespace std;

const int maxn=2010;

int n;
int tren[maxn];
int perm[maxn];
int klk[maxn];
int unutra=0;
int korak=1;
int raz;
bool nemoj[maxn];
bool stabrekojikurac[maxn];

void ubaci(int i){
  if(tren[i]!=0) return;
  tren[i]=korak;
  move_inside(perm[i]);
  unutra++;
}
void izbaci(int i){
  if(tren[i]==0) return;
  tren[i]=0;
  move_outside(perm[i]);
  unutra--;
}
int pitaj(){
  return press_button();
}
int nadji(){
  for(int i=0;i<n;i++){
    ubaci(i);
    if(pitaj()>1){
      izbaci(i);
    }
  }
  return unutra;
}

mt19937 rng(23479);

bool probaj(int gran,int sled){ // da li je >=
  korak++;
  for(int i=0;i<n;i++){
    if(unutra==raz*gran) {
      for(int i=0;i<n;i++) stabrekojikurac[i]=false;
      return true;
    }
    if(tren[i]!=0) continue;
    if(nemoj[i]) continue;
    ubaci(i);
    if((klk[i]=pitaj())>gran){
      izbaci(i);
      stabrekojikurac[i]=true;
    }
  }
  if(unutra==raz*gran) {
    for(int i=0;i<n;i++) stabrekojikurac[i]=false;
    return true;
  }
  for(int i=0;i<n;i++) if(stabrekojikurac[i]) {nemoj[i]=true; stabrekojikurac[i]=false;}
  for(int i=0;i<n;i++) if(tren[i]==korak && klk[i]>1) izbaci(i);
  //korak--;
  return false;
}

int min_cardinality(int _n){
  n=_n;
  for(int i=0;i<n;i++) perm[i]=i;
  shuffle(perm,perm+n,rng);
  raz=nadji();
  int l=1,r=n/raz;
  int res=-1;
  while(l<=r){
    int mid=l+(r-l)/2;
    int sled=l+(mid-1-l)/2;
    if(probaj(mid,sled)){
      res=mid;
      l=mid+1;
    }else r=mid-1;
  }
  return res;
}

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 0 ms 208 KB Output is correct
6 Correct 4 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 5 ms 208 KB Output is correct
9 Correct 3 ms 208 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 5 ms 208 KB Output is correct
13 Correct 6 ms 208 KB Output is correct
14 Correct 5 ms 208 KB Output is correct
15 Correct 3 ms 208 KB Output is correct
16 Correct 2 ms 208 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Correct 3 ms 208 KB Output is correct
19 Correct 4 ms 208 KB Output is correct
20 Correct 4 ms 208 KB Output is correct
21 Correct 2 ms 208 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 0 ms 208 KB Output is correct
6 Correct 4 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 5 ms 208 KB Output is correct
9 Correct 3 ms 208 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 5 ms 208 KB Output is correct
13 Correct 6 ms 208 KB Output is correct
14 Correct 5 ms 208 KB Output is correct
15 Correct 3 ms 208 KB Output is correct
16 Correct 2 ms 208 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Correct 3 ms 208 KB Output is correct
19 Correct 4 ms 208 KB Output is correct
20 Correct 4 ms 208 KB Output is correct
21 Correct 2 ms 208 KB Output is correct
22 Correct 2 ms 208 KB Output is correct
23 Correct 14 ms 208 KB Output is correct
24 Correct 6 ms 328 KB Output is correct
25 Correct 23 ms 324 KB Output is correct
26 Correct 21 ms 320 KB Output is correct
27 Correct 22 ms 308 KB Output is correct
28 Correct 7 ms 328 KB Output is correct
29 Correct 28 ms 208 KB Output is correct
30 Correct 24 ms 324 KB Output is correct
31 Correct 18 ms 328 KB Output is correct
32 Correct 10 ms 208 KB Output is correct
33 Correct 22 ms 208 KB Output is correct
34 Correct 21 ms 316 KB Output is correct
35 Correct 14 ms 208 KB Output is correct
36 Correct 23 ms 324 KB Output is correct
37 Correct 20 ms 208 KB Output is correct
38 Correct 25 ms 324 KB Output is correct
39 Correct 18 ms 208 KB Output is correct
40 Correct 10 ms 208 KB Output is correct
41 Correct 9 ms 324 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 0 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 42 ms 300 KB Output is correct
8 Correct 10 ms 328 KB Output is correct
9 Correct 32 ms 348 KB Output is correct
10 Correct 30 ms 208 KB Output is correct
11 Correct 31 ms 324 KB Output is correct
12 Correct 18 ms 208 KB Output is correct
13 Correct 52 ms 312 KB Output is correct
14 Correct 36 ms 308 KB Output is correct
15 Correct 29 ms 324 KB Output is correct
16 Correct 24 ms 324 KB Output is correct
17 Correct 30 ms 304 KB Output is correct
18 Correct 42 ms 312 KB Output is correct
19 Correct 33 ms 304 KB Output is correct
20 Correct 33 ms 208 KB Output is correct
21 Correct 37 ms 324 KB Output is correct
22 Correct 47 ms 312 KB Output is correct
23 Correct 50 ms 324 KB Output is correct
24 Correct 20 ms 208 KB Output is correct
25 Correct 26 ms 208 KB Output is correct
26 Correct 8 ms 284 KB Output is correct
27 Correct 29 ms 328 KB Output is correct
28 Correct 43 ms 324 KB Output is correct
29 Correct 32 ms 208 KB Output is correct
30 Correct 21 ms 324 KB Output is correct
31 Correct 37 ms 324 KB Output is correct
32 Correct 45 ms 208 KB Output is correct
33 Correct 40 ms 304 KB Output is correct
34 Correct 41 ms 320 KB Output is correct
35 Correct 19 ms 324 KB Output is correct
36 Correct 31 ms 208 KB Output is correct
37 Correct 45 ms 320 KB Output is correct
38 Correct 33 ms 208 KB Output is correct
39 Correct 48 ms 324 KB Output is correct
40 Correct 43 ms 208 KB Output is correct
41 Correct 35 ms 320 KB Output is correct
42 Correct 44 ms 316 KB Output is correct
43 Correct 7 ms 324 KB Output is correct
44 Correct 31 ms 304 KB Output is correct
45 Correct 37 ms 324 KB Output is correct
46 Correct 25 ms 324 KB Output is correct
47 Correct 20 ms 208 KB Output is correct
48 Correct 25 ms 208 KB Output is correct