| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 871208 | 2023-11-10T08:57:43 Z | Lib | Rarest Insects (IOI22_insects) | C++17 | 108 ms | 1412 KB |
#include <bits/stdc++.h>
#include "insects.h"
//#include "stub.cpp"
using namespace std;
deque <int> PrevIndex;
int InMachine[2003];
int Permutation[2003];
//saving the answer of each iteration so that we won't accidentially binsearch something we've already calculated
int ok[2003];
int n;
int TypeCount;
int CurrentInMachine;
int l,r,mid;
int PossibleMincount(int cnt){
while(!PrevIndex.empty()){
PrevIndex.pop_back();
}
//Pushing insects inside the machine, keeping track of the ones being putted inside for this iteration of binary searching
for(int i=0;i<n;i++){
if(InMachine[Permutation[i]]==0){
InMachine[Permutation[i]]=1;
move_inside(Permutation[i]);
PrevIndex.push_back(Permutation[i]);
if(press_button()>cnt){
move_outside(Permutation[i]);
InMachine[Permutation[i]]=0;
PrevIndex.pop_back();
}
if(PrevIndex.size()==(cnt-l)*TypeCount){
break;
}
}
}
if(PrevIndex.size()!=(cnt-l)*TypeCount){
//There clearly exist a type of insect with cardinality less than cnt, so the answer is less than cnt. Removing insects from last iteration.
while(!PrevIndex.empty()){
InMachine[PrevIndex.back()]=0;
move_outside(PrevIndex.back());
PrevIndex.pop_back();
}
PrevIndex.clear();
return 0;
}else{
//As every type of insects has at least cnt insects, the answer is at least cnt. Just return true
while(!PrevIndex.empty()){
PrevIndex.pop_back();
}
CurrentInMachine=0;
for(int i=0;i<n;i++){
CurrentInMachine+=InMachine[Permutation[i]];
}
return 1;
}
}
int min_cardinality(int N){
n=N;
//Create a random permutation to fuck with shitty tests and achieve better query efficiency
for(int i=0;i<N;i++){
Permutation[i]=i;
}
srand(time(NULL));
int Tempval;
for(int i=N-1;i>0;i--){
Tempval=rand()%i;
swap(Permutation[i],Permutation[Tempval]);
}
//Remember to initialize as this is multitest
for(int i=0;i<N;i++){
InMachine[Permutation[i]]=0;
}
while(!PrevIndex.empty()){
PrevIndex.pop_back();
}
//Phase 1: Determining the amount of different types of insects
for(int i=0;i<n;i++){
move_inside(Permutation[i]);
InMachine[Permutation[i]]=1;
PrevIndex.push_back(Permutation[i]);
if(press_button()>1){
move_outside(Permutation[i]);
InMachine[Permutation[i]]=0;
PrevIndex.pop_back();
}
}
TypeCount=PrevIndex.size();
r=N;
l=1;
//Phase 2: Binary search for the answer
while(r-l>=1){
mid=(l+r+1)/2;
if(PossibleMincount(mid)){
l=mid;
//r=min(r,mid+(N-CurrentInMachine)/TypeCount);
}else{
r=mid-1;
}
}
if(ok[r]){
return r;
}else{
return l;
}
}
Compilation message
| # | 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 | 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 | 1 ms | 596 KB | Output is correct |
| 8 | Correct | 4 ms | 344 KB | Output is correct |
| 9 | Correct | 6 ms | 344 KB | Output is correct |
| 10 | Correct | 8 ms | 344 KB | Output is correct |
| 11 | Correct | 4 ms | 344 KB | Output is correct |
| 12 | Correct | 6 ms | 344 KB | Output is correct |
| 13 | Correct | 6 ms | 344 KB | Output is correct |
| 14 | Correct | 4 ms | 344 KB | Output is correct |
| 15 | Correct | 5 ms | 344 KB | Output is correct |
| 16 | Correct | 5 ms | 344 KB | Output is correct |
| 17 | Correct | 5 ms | 344 KB | Output is correct |
| 18 | Correct | 6 ms | 344 KB | Output is correct |
| 19 | Correct | 7 ms | 344 KB | Output is correct |
| 20 | Correct | 5 ms | 344 KB | Output is correct |
| 21 | Correct | 4 ms | 344 KB | Output is correct |
| 22 | Correct | 3 ms | 344 KB | Output is correct |
| # | 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 | 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 | 1 ms | 596 KB | Output is correct |
| 8 | Correct | 4 ms | 344 KB | Output is correct |
| 9 | Correct | 6 ms | 344 KB | Output is correct |
| 10 | Correct | 8 ms | 344 KB | Output is correct |
| 11 | Correct | 4 ms | 344 KB | Output is correct |
| 12 | Correct | 6 ms | 344 KB | Output is correct |
| 13 | Correct | 6 ms | 344 KB | Output is correct |
| 14 | Correct | 4 ms | 344 KB | Output is correct |
| 15 | Correct | 5 ms | 344 KB | Output is correct |
| 16 | Correct | 5 ms | 344 KB | Output is correct |
| 17 | Correct | 5 ms | 344 KB | Output is correct |
| 18 | Correct | 6 ms | 344 KB | Output is correct |
| 19 | Correct | 7 ms | 344 KB | Output is correct |
| 20 | Correct | 5 ms | 344 KB | Output is correct |
| 21 | Correct | 4 ms | 344 KB | Output is correct |
| 22 | Correct | 3 ms | 344 KB | Output is correct |
| 23 | Correct | 10 ms | 600 KB | Output is correct |
| 24 | Correct | 4 ms | 460 KB | Output is correct |
| 25 | Correct | 25 ms | 688 KB | Output is correct |
| 26 | Correct | 40 ms | 688 KB | Output is correct |
| 27 | Correct | 50 ms | 456 KB | Output is correct |
| 28 | Correct | 21 ms | 600 KB | Output is correct |
| 29 | Correct | 50 ms | 848 KB | Output is correct |
| 30 | Correct | 47 ms | 600 KB | Output is correct |
| 31 | Correct | 25 ms | 344 KB | Output is correct |
| 32 | Correct | 28 ms | 452 KB | Output is correct |
| 33 | Correct | 30 ms | 344 KB | Output is correct |
| 34 | Correct | 28 ms | 452 KB | Output is correct |
| 35 | Correct | 33 ms | 456 KB | Output is correct |
| 36 | Correct | 30 ms | 460 KB | Output is correct |
| 37 | Correct | 41 ms | 704 KB | Output is correct |
| 38 | Correct | 39 ms | 440 KB | Output is correct |
| 39 | Correct | 38 ms | 588 KB | Output is correct |
| 40 | Correct | 28 ms | 584 KB | Output is correct |
| 41 | Correct | 17 ms | 344 KB | Output is correct |
| # | 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 | 1 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 | 17 ms | 432 KB | Output is correct |
| 8 | Correct | 8 ms | 856 KB | Output is correct |
| 9 | Partially correct | 74 ms | 704 KB | Output is partially correct |
| 10 | Partially correct | 87 ms | 680 KB | Output is partially correct |
| 11 | Partially correct | 104 ms | 692 KB | Output is partially correct |
| 12 | Partially correct | 55 ms | 712 KB | Output is partially correct |
| 13 | Partially correct | 108 ms | 684 KB | Output is partially correct |
| 14 | Partially correct | 92 ms | 1412 KB | Output is partially correct |
| 15 | Partially correct | 39 ms | 680 KB | Output is partially correct |
| 16 | Partially correct | 46 ms | 692 KB | Output is partially correct |
| 17 | Partially correct | 50 ms | 1336 KB | Output is partially correct |
| 18 | Partially correct | 58 ms | 456 KB | Output is partially correct |
| 19 | Partially correct | 60 ms | 848 KB | Output is partially correct |
| 20 | Partially correct | 59 ms | 936 KB | Output is partially correct |
| 21 | Partially correct | 84 ms | 900 KB | Output is partially correct |
| 22 | Partially correct | 97 ms | 940 KB | Output is partially correct |
| 23 | Partially correct | 90 ms | 944 KB | Output is partially correct |
| 24 | Partially correct | 80 ms | 1308 KB | Output is partially correct |
| 25 | Partially correct | 62 ms | 1180 KB | Output is partially correct |
| 26 | Partially correct | 41 ms | 848 KB | Output is partially correct |
| 27 | Partially correct | 60 ms | 1092 KB | Output is partially correct |
| 28 | Partially correct | 68 ms | 928 KB | Output is partially correct |
| 29 | Partially correct | 57 ms | 916 KB | Output is partially correct |
| 30 | Partially correct | 58 ms | 444 KB | Output is partially correct |
| 31 | Partially correct | 89 ms | 688 KB | Output is partially correct |
| 32 | Partially correct | 95 ms | 848 KB | Output is partially correct |
| 33 | Partially correct | 94 ms | 920 KB | Output is partially correct |
| 34 | Partially correct | 90 ms | 944 KB | Output is partially correct |
| 35 | Partially correct | 74 ms | 920 KB | Output is partially correct |
| 36 | Partially correct | 65 ms | 920 KB | Output is partially correct |
| 37 | Partially correct | 84 ms | 848 KB | Output is partially correct |
| 38 | Partially correct | 88 ms | 688 KB | Output is partially correct |
| 39 | Partially correct | 75 ms | 688 KB | Output is partially correct |
| 40 | Partially correct | 80 ms | 676 KB | Output is partially correct |
| 41 | Partially correct | 63 ms | 680 KB | Output is partially correct |
| 42 | Partially correct | 67 ms | 816 KB | Output is partially correct |
| 43 | Partially correct | 24 ms | 600 KB | Output is partially correct |
| 44 | Partially correct | 97 ms | 704 KB | Output is partially correct |
| 45 | Partially correct | 32 ms | 712 KB | Output is partially correct |
| 46 | Partially correct | 50 ms | 604 KB | Output is partially correct |
| 47 | Partially correct | 55 ms | 600 KB | Output is partially correct |
| 48 | Partially correct | 54 ms | 680 KB | Output is partially correct |