#include<bits/stdc++.h>
using namespace std;
#define IOS ios::sync_with_stdio(false);; cin.tie(NULL)
void selfMax(int& a, int b){
a = max(a, b);
}
void selfMin(int& a, int b){
a = min(a, b);
}
template<typename T> istream& operator>>(istream& in, vector<T>& a) {for(auto &x : a) in >> x; return in;};
template<typename T1, typename T2> istream& operator>>(istream& in, pair<T1, T2>& x) {return in >> x.first >> x.second;}
template<typename T1, typename T2> ostream& operator<<(ostream& out, const pair<T1, T2>& x) {return out << x.first << ' ' << x.second;}
template<typename T> ostream& operator<<(ostream& out, vector<T>& a) {for(auto &x : a) out << x << ' '; return out;};
template<typename T> ostream& operator<<(ostream& out, vector<vector<T>>& a) {for(auto &x : a) out << x << '\n'; return out;};
template<typename T1, typename T2> ostream& operator<<(ostream& out, vector<pair<T1, T2>>& a) {for(auto &x : a) out << x << '\n'; return out;};
/*
Use DSU dsu(N);
*/
struct DSU {
vector<int> e;
DSU(int N) { e = vector<int>(N, -1); }
// get representive component (uses path compression)
int get(int x) { return e[x] < 0 ? x : e[x] = get(e[x]); }
bool same_set(int a, int b) { return get(a) == get(b); }
int size(int x) { return -e[get(x)]; }
bool unite(int x, int y) { // union by size
x = get(x), y = get(y);
if (x == y) return false;
if (e[x] > e[y]) swap(x, y);
e[x] += e[y]; e[y] = x;
return true;
}
};
/*
Run with Bit<int> BIT
*/
template <class T> class BIT {
private:
int size;
vector<T> bit;
vector<T> arr;
public:
BIT(int size) : size(size), bit(size + 1), arr(size) {}
void set(int ind, int val) { add(ind, val - arr[ind]); }
void add(int ind, int val) {
arr[ind] += val;
ind++;
for (; ind <= size; ind += ind & -ind) { bit[ind] += val; }
}
T pref_sum(int ind) {
ind++;
T total = 0;
for (; ind > 0; ind -= ind & -ind) { total += bit[ind]; }
return total;
}
};
/*
Change Comb for specific Seg tree probs, but run with Seg<int> Seg;
*/
template<class T> struct Seg {
const T ID = 1e18; T comb(T a, T b) { return min(a,b); }
int n; vector<T> seg;
void init(int _n) { n = _n; seg.assign(2*n,ID); }
void pull(int p) { seg[p] = comb(seg[2*p],seg[2*p+1]); }
void upd(int p, T val) {
seg[p += n] = val; for (p /= 2; p; p /= 2) pull(p); }
T query(int l, int r) {
T ra = ID, rb = ID;
for (l += n, r += n+1; l < r; l /= 2, r /= 2) {
if (l&1) ra = comb(ra,seg[l++]);
if (r&1) rb = comb(seg[--r],rb);
}
return comb(ra,rb);
}
};
int convertToTernary(int N, int count1){
if (N == 0){
return;
}
int x = N % 3;
N /= 3;
if (x < 0){
N += 1;
}
convertToTernary(N, count1);
if (x < 0){
if(x + 3 * (-1) == 1){
count1++;
}
}
else{
if(x == 1){
count1++;
}
}
return count1;
}
int main(){
IOS;
int n;
cin >> n;
vector<int> v(n);
cin >> v;
sort(v.begin(), v.end());
int ans = 0;
do{
bool works = true;
for(int i = 0; i < v.size() - 1; i++){
if(__builtin_popcount(v[i]) != __builtin_popcount(v[i + 1])){
if(convertToTernary(v[i], 0) != convertToTernary(v[i + 1], 0)){
works = false;
break;
}
}
}
if(works){
ans++;
}
} while(next_permutation(v.begin(), v.end()));
cout << ans << "\n";
}
Compilation message
beauty.cpp: In function 'int convertToTernary(int, int)':
beauty.cpp:90:9: error: return-statement with no value, in function returning 'int' [-fpermissive]
90 | return;
| ^~~~~~
beauty.cpp: In function 'int main()':
beauty.cpp:120:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
120 | for(int i = 0; i < v.size() - 1; i++){
| ~~^~~~~~~~~~~~~~
