結果
| 問題 | No.2955 Pizza Delivery Plan |
| ユーザー |
 横山緑
|
| 提出日時 | 2024-11-08 22:52:11 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 377 ms / 2,000 ms |
| コード長 | 6,136 bytes |
| コンパイル時間 | 3,463 ms |
| コンパイル使用メモリ | 286,388 KB |
| 実行使用メモリ | 81,280 KB |
| 最終ジャッジ日時 | 2024-11-08 22:52:31 |
| 合計ジャッジ時間 | 9,391 ms |
|
ジャッジサーバーID （参考情報） |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 28 |
ソースコード
#line 2 "template.hpp"
// #pragma GCC target("avx2")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
// https://xn--kst.jp/blog/2019/08/29/cpp-comp/
// debug methods
// usage: debug(x,y);
// vector 出力できるように修正
template <typename T>
ostream& debug_print(ostream& os, const vector<T>& v) {
os << "[";
for (size_t i = 0; i < v.size(); ++i) {
os << v[i];
if (i < v.size() - 1) os << ", ";
}
os << "]";
return os;
}
template <typename T>
ostream& debug_print(ostream& os, const T& var) {
os << var;
return os;
}
#define CHOOSE(a) CHOOSE2 a
#define CHOOSE2(a0, a1, a2, a3, a4, x, ...) x
#define debug_1(x1) { cout << #x1 << ": "; debug_print(cout, x1) << endl; }
#define debug_2(x1, x2) { cout << #x1 << ": "; debug_print(cout, x1) << ", " << #x2 << ": "; debug_print(cout, x2) << endl; }
#define debug_3(x1, x2, x3) { cout << #x1 << ": "; debug_print(cout, x1) << ", " << #x2 << ": "; debug_print(cout, x2) << ", " << #x3 << ": "; debug_print(cout, x3) << endl; }
#define debug_4(x1, x2, x3, x4) { cout << #x1 << ": "; debug_print(cout, x1) << ", " << #x2 << ": "; debug_print(cout, x2) << ", " << #x3 << ": "; debug_print(cout, x3) << ", " << #x4 << ": "; debug_print(cout, x4) << endl; }
#define debug_5(x1, x2, x3, x4, x5) { cout << #x1 << ": "; debug_print(cout, x1) << ", " << #x2 << ": "; debug_print(cout, x2) << ", " << #x3 << ": "; debug_print(cout, x3) << ", " << #x4 << ": "; debug_print(cout, x4) << ", " << #x5 << ": "; debug_print(cout, x5) << endl; }
#ifdef LOCAL
#define debug(...) CHOOSE((__VA_ARGS__, debug_5, debug_4, debug_3, debug_2, debug_1, ~))(__VA_ARGS__)
#else
#define debug(...)
#endif
using ll = long long;
using vl = vector<ll>;
using Graph = vector<vector<ll>>;
using P = pair<ll, ll>;
#define all(v) v.begin(), v.end()
template <typename T> inline bool chmax(T &a, T b) {
return ((a < b) ? (a = b, true) : (false));
}
template <typename T> inline bool chmin(T &a, T b) {
return ((a > b) ? (a = b, true) : (false));
}
#define rep1(i, n) for(ll i = 1; i <= ((ll)n); ++i)
// https://trap.jp/post/1224/
template <class... T> constexpr auto min(T... a) {
return min(initializer_list<common_type_t<T...>>{a...});
}
template <class... T> constexpr auto max(T... a) {
return max(initializer_list<common_type_t<T...>>{a...});
}
template <class... T> void input(T &...a) { (cin >> ... >> a); }
template <class T> void input(vector<T> &a) {
for(T &x : a)
cin >> x;
}
void print() { cout << '\n'; }
template <class T, class... Ts> void print(const T &a, const Ts &...b) {
cout << a;
(cout << ... << (cout << ' ', b));
cout << '\n';
}
template <class Container, typename = void>
struct is_container : std::false_type {};
template <class Container>
struct is_container<Container, std::void_t<decltype(std::declval<Container>().begin()), decltype(std::declval<Container>().end())>> : std::true_type {};
template <class Container>
typename enable_if<is_container<Container>::value>::type print(const Container& x) {
if (!x.empty()) {
auto it = x.begin();
for (; it != prev(x.end()); ++it) {
cout << *it << " ";
}
cout << *it << "\n"; // 最後の要素を出力して改行
}
}
#define INT(...) \
int __VA_ARGS__; \
input(__VA_ARGS__)
#define LL(...) \
long long __VA_ARGS__; \
input(__VA_ARGS__)
#define STR(...) \
string __VA_ARGS__; \
input(__VA_ARGS__)
#define REP1(a) for(ll i = 0; i < a; i++)
#define REP2(i, a) for(ll i = 0; i < a; i++)
#define REP3(i, a, b) for(ll i = a; i < b; i++)
#define REP4(i, a, b, c) for(ll i = a; i < b; i += c)
#define overload4(a, b, c, d, e, ...) e
#define rep(...) overload4(__VA_ARGS__, REP4, REP3, REP2, REP1)(__VA_ARGS__)
ll inf = 3e18;
vl dx = {1, -1, 0, 0};
vl dy = {0, 0, 1, -1};
#line 2 "/home/y_midori/cp/yukicoder/452/c.cpp"
// #include <atcoder/all>
// using namespace atcoder;
// using mint = modint998244353;
void solve() {
LL(n, k);
vector<pair<double, double>> xy(n + 1, pair<double, double>(0, 0));
rep1(i, n) {
cin >> xy[i].first >> xy[i].second;
}
auto dist = [](pair<double, double> x, pair<double, double> y) {
auto [i, j] = x;
auto [k, l] = y;
return sqrt(pow(i - k, 2) + pow(j - l, 2));
};
vector dp(n + 1, vector(1LL << n + 1, vector(k + 1, double(inf))));
dp[0][1][k] = 0;
rep(j, 1LL << (n + 1)) {
rep(i, n + 1) {
// chmin(dp[i][1LL << i][k-1],dist(xy[0],xy[i]));
if((j >> i) & 1 == 0) {
continue;
}
rep(l, k + 1) {
chmin(dp[0][j | 1][k], dp[i][j][l] + dist(xy[i], xy[0]));
}
rep(z, n + 1) {
if((j >> z) & 1) {
continue;
}
rep1(l, k) {
chmin(dp[z][j | (1LL << z)][l - 1],
dp[i][j][l] + dist(xy[i], xy[z]));
chmin(dp[0][j | (1LL << z)][k],
dp[z][j | (1LL << z)][l - 1] + dist(xy[0], xy[z]));
if(dp[i][j][l] != inf) {
debug(i, j, z, l);
debug(dp[i][j][l], (j | (1LL << z)),
dp[z][j | (1LL << z)][l - 1]);
}
}
}
rep(l, k + 1) {
chmin(dp[0][j | 1][k], dp[i][j][l] + dist(xy[i], xy[0]));
}
}
}
// double ans = inf;
print(dp[0][(1LL << (n + 1)) - 1][k]);
}
int main() {
ios::sync_with_stdio(false);
std::cin.tie(nullptr);
cout << std::setprecision(16);
int t = 1;
rep(_, t) {
solve();
}
}