結果

問題 No.2675 KUMA
ユーザー MMRZ
提出日時 2024-04-02 16:20:51
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 535 ms / 2,000 ms
コード長 3,188 bytes
コンパイル時間 3,559 ms
コンパイル使用メモリ 256,840 KB
実行使用メモリ 6,824 KB
最終ジャッジ日時 2024-09-30 23:14:34
合計ジャッジ時間 8,087 ms
ジャッジサーバーID
(参考情報)
judge3 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 2
other AC * 47
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

# include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ull = unsigned long long;
const double pi = acos(-1);
template<class T>constexpr T inf() { return ::std::numeric_limits<T>::max(); }
template<class T>constexpr T hinf() { return inf<T>() / 2; }
template <typename T_char>T_char TL(T_char cX) { return tolower(cX); }
template <typename T_char>T_char TU(T_char cX) { return toupper(cX); }
template<class T> bool chmin(T& a,T b) { if(a > b){a = b; return true;} return false; }
template<class T> bool chmax(T& a,T b) { if(a < b){a = b; return true;} return false; }
template<class T> bool is_sqare(T a) { if(floor(sqrt(a)) * floor(sqrt(a)) == a){ return true; }return false; }
int popcnt(unsigned long long n) { int cnt = 0; for (int i = 0; i < 64; i++)if ((n >> i) & 1)cnt++; return cnt; }
int d_sum(ll n) { int ret = 0; while (n > 0) { ret += n % 10; n /= 10; }return ret; }
int d_cnt(ll n) { int ret = 0; while (n > 0) { ret++; n /= 10; }return ret; }
ll gcd(ll a, ll b) { if (b == 0)return a; return gcd(b, a%b); };
ll lcm(ll a, ll b) { ll g = gcd(a, b); return a / g*b; };
template<class T> using dijk = priority_queue<T, vector<T>, greater<T>>;
# define all(qpqpq) (qpqpq).begin(),(qpqpq).end()
# define UNIQUE(wpwpw) (wpwpw).erase(unique(all((wpwpw))),(wpwpw).end())
# define LOWER(epepe) transform(all((epepe)),(epepe).begin(),TL<char>)
# define UPPER(rprpr) transform(all((rprpr)),(rprpr).begin(),TU<char>)
# define rep(i,upupu) for(ll i = 0, i##_len = (upupu);(i) < (i##_len);(i)++)
# define reps(i,opopo) for(ll i = 1, i##_len = (opopo);(i) <= (i##_len);(i)++)
# define len(x) ((ll)(x).size())
# define bit(n) (1LL << (n))
# define pb push_back
# define exists(c, e) ((c).find(e) != (c).end())
#ifdef LOCAL
# include "_debug_print.hpp"
# define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
# define debug(...) (static_cast<void>(0))
#endif
struct INIT{
INIT(){
std::ios::sync_with_stdio(false);
std::cin.tie(0);
cout << fixed << setprecision(20);
}
}INIT;
void solve(){
int n;
cin >> n;
vector<int> x(n), y(n);
rep(i, n)cin >> x[i] >> y[i];
set<pair<int, int>> cand_yx;
int dx[] = {1, 2, 2, 1, -1, -2, -2, -1};
int dy[] = {-2, -1, 1, 2, 2, 1, -1, -2};
rep(i, n){
rep(dir, 8){
int ny = y[i] + dy[dir];
int nx = x[i] + dx[dir];
bool flg = true;
rep(j, n)if(ny == y[j] && nx == x[j])flg = false;
if(not flg)continue;
cand_yx.insert({ny, nx});
}
}
vector<int> dp(bit(n), hinf<int>());
dp[0] = 0;
for(auto [sy, sx] : cand_yx){
auto ndp = dp;
rep(subset, bit(n)){
int dx2[] = {2, 2, -2, -2, -1, 1, -1, 1};
int dy2[] = {-1, 1, -1, 1, -2, -2, 2, 2};
rep(dir, 4){
int ns = subset;
rep(i, n){
if(sy + dy2[2*dir + 0] == y[i] && sx + dx2[2*dir + 0] == x[i])ns |= bit(i);
if(sy + dy2[2*dir + 1] == y[i] && sx + dx2[2*dir + 1] == x[i])ns |= bit(i);
}
chmin(ndp[ns], dp[subset]+1);
}
}
dp = ndp;
}
if(dp[bit(n)-1] == hinf<int>()){
cout << -1 << endl;
return;
}
cout << dp[bit(n)-1] << endl;
}
int main(){
int t = 1;
//cin >> t;
while(t--)solve();
}
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