Submission #988400

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
988400	2024-05-24T15:46:50 Z	cnn008	Rarest Insects (IOI22_insects)	C++17	Compilation error	0 ms	0 KB

insects

#include "bits/stdc++.h"
using namespace std;
 
#ifdef N_N_C
#include "debug.h"
#else
#define cebug(...) "Arya"
#endif
 
#define int long long
 
const int mod=1e9+7;
 
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r){
    assert(l<=r);
    return uniform_int_distribution<int> (l,r)(rng);
}
set <int> s;
int f=1;
void move_inside(int i){
	int t=rand(1,n);
	s.insert(t);
	if(s.find(t)!=s.end()) f=2;
}
void move_outside(int i){
	s.erase(s.find(rand(1,n)));
	f=1;
}
int press_buton(){
	return f;
}
int min_cardinality(int N){
	int type=0;
	for(int i=0; i<N; i++){
		move_inside(i);
		press_buton();
		if(press_buton()==1){
			type++;
			move_outside(i);
		}
	}
	return rand(1,N/type);
}

Compilation message

insects.cpp: In function 'void move_inside(long long int)':
insects.cpp:22:15: error: 'n' was not declared in this scope
   22 |  int t=rand(1,n);
      |               ^
insects.cpp: In function 'void move_outside(long long int)':
insects.cpp:27:24: error: 'n' was not declared in this scope
   27 |  s.erase(s.find(rand(1,n)));
      |                        ^