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Submission #1070464

# Submission time Handle Problem Language Result Execution time Memory
1070464 2024-08-22T14:29:48 Z noyancanturk Rarest Insects (IOI22_insects) C++17
98.88 / 100
 52 ms 680 KB 
#include "insects.h"

#include<iostream>

int min_cardinality(int n) {
  int types[n]{},cert[n]{};
  bool arein[n]{};
  int last=0;
  auto push=[&](int i){
    move_inside(i);
    arein[i]=1;
  };
  auto pop=[&](int i){
    move_outside(i);
    arein[i]=0;
  };
  auto query=[&](){
    last=press_button();
  };
  types[0]=cert[0]=1;
  push(0);
  int headcnt=1;
  for(int i=1;i<n;i++){
    push(i);
    query();
    if(last!=1){
      types[i]=cert[i]=2;
      pop(i);
    }else headcnt+=types[i]=cert[i]=1;
  }
    query();
  int ans=1;
  int cnt=headcnt;
  int l=2,r=n/headcnt;
  while(l<=r){
    int mid=l+r>>1;
    for(int i=0;i<n;i++){
      if(mid<types[i]&&arein[i]&&mid<last){
        pop(i),cnt--;
        query();
      }
    }
    for(int i=0;i<n;i++){
      if(arein[i]||mid<cert[i])continue;
      int llast=last;
      push(i),cnt++;
      query();
      if(llast!=last)cert[i]=std::max(cert[i],last);
      if(mid<last)pop(i),cnt--,last--;
      types[i]=std::max(types[i],last);
    }
    if(cnt==headcnt*mid){
      ans=mid;
      l=mid+1;
      std::cerr<<"up\n";
    }else{
      r=cnt/headcnt;
      std::cerr<<"down\n";
      std::cerr<<mid<<" to "<<r<<"\n";
    }
  }
  for(int i=0;i<20;i++){
    std::cerr<<types[i]<<" ";
  }std::cerr<<"\n";
  for(int i=0;i<20;i++){
    std::cerr<<cert[i]<<" ";
  }std::cerr<<"\n";
  return ans;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:36:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   36 |     int mid=l+r>>1;
      |             ~^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 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 2 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 4 ms 600 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 3 ms 436 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 4 ms 600 KB Output is correct
13 Correct 4 ms 440 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 5 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 4 ms 344 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 4 ms 344 KB Output is correct
20 Correct 4 ms 432 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 2 ms 600 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 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 2 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 4 ms 600 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 3 ms 436 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 4 ms 600 KB Output is correct
13 Correct 4 ms 440 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 5 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 4 ms 344 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 4 ms 344 KB Output is correct
20 Correct 4 ms 432 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 2 ms 600 KB Output is correct
23 Correct 26 ms 592 KB Output is correct
24 Correct 6 ms 340 KB Output is correct
25 Correct 21 ms 436 KB Output is correct
26 Correct 8 ms 440 KB Output is correct
27 Correct 17 ms 432 KB Output is correct
28 Correct 6 ms 440 KB Output is correct
29 Correct 14 ms 344 KB Output is correct
30 Correct 30 ms 436 KB Output is correct
31 Correct 19 ms 424 KB Output is correct
32 Correct 16 ms 344 KB Output is correct
33 Correct 19 ms 432 KB Output is correct
34 Correct 14 ms 344 KB Output is correct
35 Correct 16 ms 344 KB Output is correct
36 Correct 21 ms 432 KB Output is correct
37 Correct 17 ms 420 KB Output is correct
38 Correct 12 ms 440 KB Output is correct
39 Correct 7 ms 592 KB Output is correct
40 Correct 11 ms 596 KB Output is correct
41 Correct 7 ms 344 KB Output is correct

Subtask #3
73.88 / 75.0

# Verdict Execution time Memory 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 508 KB Output is correct
7 Correct 42 ms 596 KB Output is correct
8 Correct 12 ms 428 KB Output is correct
9 Correct 37 ms 680 KB Output is correct
10 Partially correct 52 ms 344 KB Output is partially correct
11 Correct 26 ms 424 KB Output is correct
12 Correct 15 ms 592 KB Output is correct
13 Correct 23 ms 596 KB Output is correct
14 Partially correct 31 ms 444 KB Output is partially correct
15 Correct 32 ms 428 KB Output is correct
16 Partially correct 41 ms 344 KB Output is partially correct
17 Partially correct 26 ms 344 KB Output is partially correct
18 Partially correct 47 ms 444 KB Output is partially correct
19 Partially correct 32 ms 344 KB Output is partially correct
20 Partially correct 39 ms 344 KB Output is partially correct
21 Partially correct 32 ms 592 KB Output is partially correct
22 Partially correct 46 ms 428 KB Output is partially correct
23 Partially correct 30 ms 424 KB Output is partially correct
24 Correct 31 ms 592 KB Output is correct
25 Correct 14 ms 440 KB Output is correct
26 Correct 9 ms 344 KB Output is correct
27 Correct 34 ms 592 KB Output is correct
28 Correct 36 ms 424 KB Output is correct
29 Partially correct 38 ms 428 KB Output is partially correct
30 Partially correct 43 ms 428 KB Output is partially correct
31 Correct 42 ms 428 KB Output is correct
32 Partially correct 37 ms 444 KB Output is partially correct
33 Correct 19 ms 428 KB Output is correct
34 Correct 34 ms 592 KB Output is correct
35 Partially correct 29 ms 344 KB Output is partially correct
36 Partially correct 35 ms 440 KB Output is partially correct
37 Correct 43 ms 432 KB Output is correct
38 Correct 26 ms 344 KB Output is correct
39 Correct 30 ms 344 KB Output is correct
40 Correct 35 ms 444 KB Output is correct
41 Partially correct 29 ms 428 KB Output is partially correct
42 Partially correct 36 ms 424 KB Output is partially correct
43 Correct 7 ms 436 KB Output is correct
44 Correct 13 ms 344 KB Output is correct
45 Correct 23 ms 440 KB Output is correct
46 Correct 12 ms 344 KB Output is correct
47 Correct 14 ms 344 KB Output is correct
48 Correct 19 ms 344 KB Output is correct