Submission #885763

#	Time	Username	Problem	Language	Result	Execution time	Memory
885763		Zero	Beautiful row (IZhO12_beauty)	C++17	0 / 100	0 ms	348 KiB

beauty

#include <bits/stdc++.h>
using namespace std;

int bt(int n){
	return __builtin_popcount(n);
}
int tr(int n){
	int y = 0;
	while(n){
		if(n%3==1) y++;
		n/=3;
	}
	return y;	
}
bool ok(vector<int> a){
	for(int i=0; i < a.size()-1; i ++){
		int b1 = bt(a[i]), t1 = tr(a[i]);
		int b2 = bt(a[i+1]), t2 = tr(a[i+1]);
		if(!(b1 == b2 || b1 == t2 || t1 == b2 || t1 == t2)) return 0;
	}
	return 1;
}
int main() {
	int n; cin >> n;
	vector<int> a(n);
	for(auto &i : a ) cin >> i;
	sort(a.begin(),a.end());
	int c = 0;
	do{
		c += ok(a);
	}while(next_permutation(a.begin(),a.end()));
	cout << c;
	
    return 0;
}

Compilation message (stderr)

beauty.cpp: In function 'bool ok(std::vector<int>)':
beauty.cpp:16:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for(int i=0; i < a.size()-1; i ++){
      |               ~~^~~~~~~~~~~~

• Subtask 1: 0 / 100