#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <iomanip>
#include <array>
#include <string>
#include <algorithm>
#include <cmath>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <bitset>
#include <list>
#include <iterator>
#include <numeric>
#include <complex>
#include <utility>
#include <random>
#include <fstream>
using namespace std;
/* -------------------- Typedefs -------------------- */
typedef int itn;
typedef long long ll;
typedef unsigned long long ull;
typedef float fl;
typedef double db;
typedef long double ld;
/* -------------------- Usings -------------------- */
using vi = vector<int>;
using vll = vector<ll>;
using mii = map<int, int>;
using mll = map<ll, ll>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
/* -------------------- Defines -------------------- */
#define ff first
#define ss second
#define pub push_back
#define pob pop_back
#define puf push_front
#define pof pop_front
#define mpr make_pair
#define yes cout<<"Yes\n"
#define no cout<<"No\n"
#define all(x) (x).begin(), (x).end()
/* -------------------- Constants -------------------- */
const int MAX = int(1e9 + 5);
const ll MAXL = ll(1e18 + 5);
const ll MOD = ll(1e9 + 7);
const ll MOD2 = ll(998244353);
/* -------------------- Functions -------------------- */
void fastio() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
}
void precision(int x) {
cout.setf(ios::fixed | ios::showpoint);
cout.precision(x);
}
ll gcd(ll a, ll b) {
while (b) {
a %= b;
swap(a, b);
}
return a;
}
ll lcm(ll a, ll b) {
return a / gcd(a, b) * b;
}
ll range_sum(ll a, ll b) {
ll dif = a - 1, cnt = b - a + 1;
ll ans = ((b - a + 1) * (b - a + 2)) / 2;
ans += ((b - a + 1) * dif);
return ans;
}
string dec_to_bin(ll a) {
string s = "";
for (ll i = a; i > 0; ) {
ll k = i % 2;
i /= 2;
char c = k + 48;
s += c;
}
if (a == 0) {
s = "0";
}
reverse(all(s));
return s;
}
ll bin_to_dec(string s) {
ll num = 0;
for (int i = 0; i < s.size(); i++) {
num *= 2ll;
num += (s[i] - '0');
}
return num;
}
int isPrime(ll a) {
if (a == 1) return 0;
for (ll i = 2; i * i <= a; i++) {
if (a % i == 0) return 0;
}
return 1;
}
ll binpow(ll a, ll b) {
if (!a) return 0;
ll ans = 1;
while (b) {
if (b & 1) {
ans *= a;
}
b >>= 1;
a *= a;
}
return ans;
}
ll binpow_by_mod(ll a, ll b, ll mod) {
if (!a) return 0;
ll ans = 1;
while (b) {
if (b & 1) {
ans *= a;
ans %= mod;
}
b >>= 1;
a *= a;
a %= mod;
}
return ans;
}
/* -------------------- Solution -------------------- */
const int N = 25;
int a[N], cnt2[N], cnt3[N], n;
ll dp[N][N];
vi g[N];
void rec(int ind, set<int> st = {}, int len = n) {
mii used;
if (len == 1) {
dp[ind][len] = 1;
return;
}
st.insert(ind);
for (auto to : g[ind]) {
if (st.find(to) != st.end()) continue;
if (used[a[to]]) continue;
used[a[to]] = 1;
rec(to, st, len - 1);
dp[ind][len] += dp[to][len - 1];
}
}
void slv() {
cin >> n;
mii used;
int ind = 1;
for (int i = 1; i <= n; i++) {
cin >> a[i];
int num = a[i];
while (num) {
if (num % 2) cnt2[i]++;
num /= 2;
}
num = a[i];
while (num) {
if (num % 3 == 1) cnt3[i]++;
num /= 3;
}
}
for (int i = 1; i <= n; i++) {
for (int j = i + 1; j <= n; j++) {
if (cnt2[i] == cnt2[j] || cnt3[i] == cnt3[j]) {
g[i].pub(j), g[j].pub(i);
}
}
}
ll ans = 0;
for (int i = 1; i <= n; i++) {
if (used[a[i]]) continue;
rec(i);
ans += dp[i][n];
used[a[i]] = 1;
for (int j = 1; j <= n; j++) {
for (int q = 1; q <= n; q++) {
dp[j][q] = 0;
}
}
}
cout << ans;
}
void cs() {
int tstc = 1;
//cin >> tstc;
while (tstc--) {
slv();
}
}
void precalc() {
return;
}
int main() {
fastio();
precalc();
//precision(0);
cs();
return 0;
}
Compilation message
beauty.cpp: In function 'll range_sum(ll, ll)':
beauty.cpp:90:21: warning: unused variable 'cnt' [-Wunused-variable]
90 | ll dif = a - 1, cnt = b - a + 1;
| ^~~
beauty.cpp: In function 'll bin_to_dec(std::string)':
beauty.cpp:113:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
113 | for (int i = 0; i < s.size(); i++) {
| ~~^~~~~~~~~~
beauty.cpp: In function 'void slv()':
beauty.cpp:182:9: warning: unused variable 'ind' [-Wunused-variable]
182 | int ind = 1;
| ^~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
