結果

問題 No.2375 watasou and hibit's baseball
ユーザー ForestedForested
提出日時 2023-07-07 21:44:23
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 68 ms / 2,000 ms
コード長 3,183 bytes
コンパイル時間 1,266 ms
コンパイル使用メモリ 130,652 KB
最終ジャッジ日時 2025-02-15 07:04:05
ジャッジサーバーID
(参考情報)
judge3 / judge2
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 * 3
other AC * 36
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

#ifndef LOCAL
#define FAST_IO
#endif
// ============
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#define OVERRIDE(a, b, c, d, ...) d
#define REP2(i, n) for (i32 i = 0; i < (i32)(n); ++i)
#define REP3(i, m, n) for (i32 i = (i32)(m); i < (i32)(n); ++i)
#define REP(...) OVERRIDE(__VA_ARGS__, REP3, REP2)(__VA_ARGS__)
#define PER(i, n) for (i32 i = (i32)(n) - 1; i >= 0; --i)
#define ALL(x) begin(x), end(x)
using namespace std;
using u32 = unsigned int;
using u64 = unsigned long long;
using i32 = signed int;
using i64 = signed long long;
using f64 = double;
using f80 = long double;
template <typename T>
using Vec = vector<T>;
template <typename T>
bool chmin(T &x, const T &y) {
if (x > y) {
x = y;
return true;
}
return false;
}
template <typename T>
bool chmax(T &x, const T &y) {
if (x < y) {
x = y;
return true;
}
return false;
}
#ifdef INT128
using u128 = __uint128_t;
using i128 = __int128_t;
istream &operator>>(istream &is, i128 &x) {
i64 v;
is >> v;
x = v;
return is;
}
ostream &operator<<(ostream &os, i128 x) {
os << (i64)x;
return os;
}
istream &operator>>(istream &is, u128 &x) {
u64 v;
is >> v;
x = v;
return is;
}
ostream &operator<<(ostream &os, u128 x) {
os << (u64)x;
return os;
}
#endif
[[maybe_unused]] constexpr i32 INF = 1000000100;
[[maybe_unused]] constexpr i64 INF64 = 3000000000000000100;
struct SetUpIO {
SetUpIO() {
#ifdef FAST_IO
ios::sync_with_stdio(false);
cin.tie(nullptr);
#endif
cout << fixed << setprecision(15);
}
} set_up_io;
// ============
#ifdef DEBUGF
#else
#define DBG(x) (void)0
#endif
int main() {
i32 n, a, b;
cin >> n >> a >> b;
Vec<i32> x(n), y(n), k(n);
REP(i, n) { cin >> x[i] >> y[i] >> k[i]; }
const auto dist2 = [&](i32 i, i32 j) -> i32 {
return abs(x[i] - x[j]) + abs(y[i] - y[j]);
};
Vec<Vec<Vec<i32>>> ok(n, Vec<Vec<i32>>(n, Vec<i32>(1 << n, 0)));
REP(i, n) REP(j, n) {
if (i != j && (dist2(i, j) >= a || abs(k[i] - k[j]) >= b)) {
ok[i][j][(1 << i) ^ (1 << j)] = 1;
}
}
REP(st, 1 << n) REP(i, n) REP(j, n) {
if (!(st & (1 << i))) {
continue;
}
if (!(st & (1 << j))) {
continue;
}
if (!ok[i][j][st]) {
continue;
}
REP(l, n) {
if (!!(st & (1 << l))) {
continue;
}
if (!!(st & (1 << l))) {
continue;
}
if (abs(k[l] - k[j]) >= b || dist2(l, i) + dist2(l, j) >= a) {
ok[j][l][st ^ (1 << l)] = 1;
}
}
}
i32 ans = 1;
REP(i, n) REP(j, n) REP(st, 1 << n) if (ok[i][j][st]) {
chmax(ans, __builtin_popcount(st));
}
cout << ans << '\n';
}
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