Submission #691825

#	Time	Username	Problem	Language	Result	Execution time	Memory
691825		iskhakkutbilim	Beautiful row (IZhO12_beauty)	C++14	0 / 100	8 ms	16724 KiB

beauty

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

#define int long long
#define ff first
#define ss second
#define all(a) a.begin(), a.end()


int ones(int x){
	int s = 0;
	while(x > 0){
		s+= (x%3==1);
		x/= 3;
	}
	return s;
}
int all[1<<20];
main(){
	int n;
	cin >> n;
	vector<int> a(n), binary(n), ternary(n);
	for(int i = 0;i < n; i++){
		cin >> a[i];
		binary[i] = __builtin_popcount(a[i]);
		ternary[i] = ones(a[i]);
//		cout << binary[i] << ' ' << ternary[i] << '\n';
	}
	int answer = 0;
	vector<int> b_used(1<<20, 0), t_used(1<<20, 0);
	for(int mask = 0; mask < (1<< n); mask++){
		set<int> st, st1, st2;
		int B = 0, T = 0;
		for(int i = 0;i < n; i++){
			if(mask & (1<<i)){
				st1.insert(binary[i]);
				B+= (1<<i);
				st.insert(binary[i]);
			}else{
				T+= (1<<i);
				st2.insert(ternary[i]);
				st.insert(ternary[i]);
			}
		}
//		if(st.size() == 1 && all[mask]==0){
//			all[mask] = 1;
//			answer++;
//		} 
		if(st1.size() == 1 and __builtin_popcount(B) > 1){
//			cout << "binary ";
//			for(int i = 0;i < n; i++){
//				if(mask & (1<<i)){
//					cout << a[i] << ' ';
//				}
//			}
//			cout << '\n';
			b_used[B] = 1;
			answer++;
		} 
		if(st2.size() == 1 and __builtin_popcount(T) > 1){
//			cout << "ternary ";
//			for(int i = 0;i < n; i++){
//				if(mask & (1<<i)){
//					
//				}else{
//					cout << a[i] << ' ';
//				}
//			}
//			cout << '\n';
			answer++;
			t_used[T] = 1;
		}
	}
	cout << answer;
	return 0;
}

Compilation message (stderr)

beauty.cpp:19:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   19 | main(){
      | ^~~~

• Subtask 1: 0 / 100