#ifdef ONLINE_JUDGE
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#endif
#include <bits/stdc++.h>
#define speed \
ios_base::sync_with_stdio(0); \
cin.tie(0); \
cout.tie(0);
#define precision \
cout.precision(30); \
cerr.precision(10);
#define ll long long
#define ld long double
#define pb(x) push_back(x)
#define sz(x) (int)x.size()
#define mp(x, y) make_pair(x, y)
#define all(x) x.begin(), x.end()
#define pc(x) __builtin_popcount(x)
#define pcll(x) __builtin_popcountll(x)
#define F first
#define S second
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
void ioi(string name) {
freopen((name + ".in").c_str(), "r", stdin);
freopen((name + ".out").c_str(), "w", stdout);
}
ll n, a[25], b[25], dp[1 << 25][25], c[1 << 25][25];
int main() {
speed;
precision;
// code
cin >> n;
for (int i = 0; i < n; i++) {
ll x;
cin >> x;
a[i] = pc(x);
while (x > 0) {
b[i] += ((x % 3) == 1);
x /= 3;
}
}
for (int i = 0; i < n; i++) dp[1 << i][i] = 1;
for (int i = 1; i < (1 << n); i++) {
for (int j = 0; j < n; j++) {
c[i][j] = (a[__lg(i & -i)] == a[j] || b[__lg(i & -i)] == b[j]);
}
}
for (int i = 0; i < (1 << n); i++) {
for (int j = 0; j < n; j++) {
if (i & (1 << j)) continue;
for (int k = i; k; k ^= (k & -k)) {
dp[i | (1 << j)][j] += dp[i][__lg(k & -k)] * c[k][j];
}
}
}
cout << accumulate(dp[(1 << n) - 1], dp[(1 << n) - 1] + n, 0LL);
// endl
#ifndef ONLINE_JUDGE
cerr << "\nTime elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
#endif
return 0;
}
Compilation message
beauty.cpp: In function 'void ioi(std::string)':
beauty.cpp:26:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
26 | freopen((name + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
beauty.cpp:27:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
27 | freopen((name + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/ccHqgT7C.o: in function `main':
beauty.cpp:(.text.startup+0x2c): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/ccHqgT7C.o
beauty.cpp:(.text.startup+0x33): relocation truncated to fit: R_X86_64_PC32 against symbol `std::cin' defined in .bss._ZSt3cin section in /usr/lib/gcc/x86_64-linux-gnu/10/libstdc++.a(globals_io.o)
beauty.cpp:(.text.startup+0x3a): relocation truncated to fit: R_X86_64_PC32 against symbol `std::cin' defined in .bss._ZSt3cin section in /usr/lib/gcc/x86_64-linux-gnu/10/libstdc++.a(globals_io.o)
beauty.cpp:(.text.startup+0x45): relocation truncated to fit: R_X86_64_PC32 against symbol `std::cout' defined in .bss._ZSt4cout section in /usr/lib/gcc/x86_64-linux-gnu/10/libstdc++.a(globals_io.o)
beauty.cpp:(.text.startup+0x50): relocation truncated to fit: R_X86_64_PC32 against symbol `std::cout' defined in .bss._ZSt4cout section in /usr/lib/gcc/x86_64-linux-gnu/10/libstdc++.a(globals_io.o)
beauty.cpp:(.text.startup+0x5b): relocation truncated to fit: R_X86_64_PC32 against symbol `std::cerr' defined in .bss._ZSt4cerr section in /usr/lib/gcc/x86_64-linux-gnu/10/libstdc++.a(globals_io.o)
beauty.cpp:(.text.startup+0x6b): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/ccHqgT7C.o
beauty.cpp:(.text.startup+0x72): relocation truncated to fit: R_X86_64_PC32 against symbol `dp' defined in .bss section in /tmp/ccHqgT7C.o
beauty.cpp:(.text.startup+0x88): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccHqgT7C.o
beauty.cpp:(.text.startup+0x99): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccHqgT7C.o
beauty.cpp:(.text.startup+0xa6): additional relocation overflows omitted from the output
/usr/bin/ld: failed to convert GOTPCREL relocation; relink with --no-relax
collect2: error: ld returned 1 exit status
