結果
問題 | No.2769 Number of Rhombi |
ユーザー | sgfc |
提出日時 | 2024-05-31 22:56:49 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 962 ms / 5,000 ms |
コード長 | 5,702 bytes |
コンパイル時間 | 5,791 ms |
コンパイル使用メモリ | 328,972 KB |
実行使用メモリ | 95,232 KB |
最終ジャッジ日時 | 2024-05-31 22:57:17 |
合計ジャッジ時間 | 26,347 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 244 ms
27,392 KB |
testcase_04 | AC | 235 ms
25,600 KB |
testcase_05 | AC | 323 ms
18,944 KB |
testcase_06 | AC | 402 ms
23,168 KB |
testcase_07 | AC | 496 ms
27,648 KB |
testcase_08 | AC | 538 ms
28,160 KB |
testcase_09 | AC | 503 ms
29,696 KB |
testcase_10 | AC | 612 ms
31,488 KB |
testcase_11 | AC | 579 ms
33,280 KB |
testcase_12 | AC | 642 ms
34,944 KB |
testcase_13 | AC | 614 ms
36,608 KB |
testcase_14 | AC | 664 ms
40,192 KB |
testcase_15 | AC | 657 ms
42,240 KB |
testcase_16 | AC | 691 ms
44,928 KB |
testcase_17 | AC | 688 ms
49,280 KB |
testcase_18 | AC | 780 ms
60,928 KB |
testcase_19 | AC | 795 ms
65,152 KB |
testcase_20 | AC | 784 ms
69,120 KB |
testcase_21 | AC | 876 ms
78,464 KB |
testcase_22 | AC | 913 ms
86,272 KB |
testcase_23 | AC | 962 ms
95,232 KB |
testcase_24 | AC | 2 ms
6,944 KB |
testcase_25 | AC | 608 ms
36,480 KB |
testcase_26 | AC | 649 ms
38,528 KB |
testcase_27 | AC | 671 ms
49,664 KB |
testcase_28 | AC | 668 ms
44,032 KB |
testcase_29 | AC | 780 ms
70,656 KB |
testcase_30 | AC | 695 ms
46,464 KB |
testcase_31 | AC | 589 ms
34,944 KB |
testcase_32 | AC | 533 ms
28,032 KB |
testcase_33 | AC | 491 ms
28,160 KB |
testcase_34 | AC | 582 ms
30,848 KB |
ソースコード
#include "bits/stdc++.h" #include <stdio.h> #include <math.h> #include "atcoder/all" #include <float.h> //#include <boost/multiprecision/cpp_int.hpp> //using namespace boost::multiprecision; using namespace std; using namespace atcoder; using ll = long long; using ull = unsigned long long; using mint = modint998244353; using mint2 = modint1000000007; const double eps = 1e-9; #define REP(i, n) for (ll i = 0; i < ll(n); ++i) #define REPI(i, init, n) for (ll i = init; i < ll(n); ++i) #define REPD(i, init) for (ll i = init; i >=0; --i) #define REPDI(i, init, n) for (ll i = init; i >=n; --i) #define REPE(i, c) for (const auto& i : c) #define TCASE() ll _ttt; cin >> _ttt; while(_ttt--) using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; #define VLI(a, n) vector<ll> a; a.assign(n, 0); for(auto& x : a) cin >> x; #define DLI(a, n) deque<ll> a; a.assign(n, 0); for(auto& x : a) cin >> x; #define VSI(a, n) vector<string> a; a.assign(n, ""); for(auto& x : a) cin >> x; #define VVLI(a, n, m, init) vector<vector<ll>> a(n); for(auto& x : a) x.assign(m, init); using vd = vector<double>; using pl = pair<ll, ll>; using vpl = vector<pl>; struct uv { ll u; ll v; ll c; }; #define VUVI(a, n) vector<uv> a; a.assign(n, {0, 0, 1}); for(auto& x : a) {cin >> x.u >> x.v; x.u--; x.v--;} #define VUVCI(a, n) vector<uv> a; a.assign(n, {0, 0, 0}); for(auto& x : a) {cin >> x.u >> x.v >> x.c; x.u--; x.v--;} vvl to_edge(const ll n, const vector<uv>& v) { vvl ret(n); for (auto& x : v) ret[x.u].push_back(x.v); return ret; } vvl to_edge_d(const ll n, const vector<uv>& v) { vvl ret(n); for (auto& x : v) { ret[x.u].push_back(x.v); ret[x.v].push_back(x.u); } return ret; } template <class T = long long> using pql = priority_queue<T>; template <class T = long long> using pqg = priority_queue<T, vector<T>, greater<T>>; using vm = vector<mint>; using vvm = vector<vm>; ostream& operator<<(ostream& os, const mint& v) { os << v.val(); return os; } void yn(bool f) { std::cout << (f ? "Yes" : "No") << endl; }; template<class T> void ov(const T& v) { for (auto it = v.begin(); it != v.end(); it++) { if (it != v.begin()) cout << " "; cout << *it; } }; template<> void ov(const vm& v) { for (auto it = v.begin(); it != v.end(); it++) { if (it != v.begin()) cout << " "; cout << it->val(); } }; const ll llhuge = 1LL << 62; //十分でかいが多少足しても溢れない数値 auto gmax(const auto& a, const auto& b) { return a > b ? a : b; }; auto gmin(const auto& a, const auto& b) { return a < b ? a : b; }; bool chmin(auto& a, const auto& b) { const auto olda = a; a = gmin(a, b); return olda != a; } bool chmax(auto& a, const auto& b) { const auto olda = a; a = gmax(a, b); return olda != a; } void sort(auto& v) { std::ranges::sort(v); }; void rev(auto& v) { std::ranges::reverse(v); }; template<class T> auto p_sum(const T& v) { T ret(v.size()); std::partial_sum(begin(v), end(v), ret.begin()); return ret; }; template<class T, class K = T::key_type, class V = T::mapped_type> [[nodiscard]] V myat(const T& mp, const K& key) { return mp.find(key) == mp.end() ? V() : mp.at(key); } long long ceil(const long long a, const long long b) { return (a + b - 1) / b; } //分数クラス template<class T = long long> class Ratio { T gcd(T a, T b) noexcept { if (a < 0) a = -a; if (b < 0) b = -b; while (b != 0) { a %= b; swap(a, b); } return a; } public: T numer = 0; T denom = 1; Ratio() {}; Ratio(const T& _numer, const T& _denom) : numer(_numer), denom(_denom) { reduce(); }; void reduce() noexcept { const T g = Ratio<T>::gcd(numer, denom); numer /= g; denom /= g; if (denom < T(0)) { numer *= -1; denom *= -1; } } bool operator<(const Ratio<T>& rhs) const noexcept { return (numer * rhs.denom) < (rhs.numer * denom); } bool operator==(const Ratio<T>& rhs) const noexcept { return (numer * rhs.denom) == (rhs.numer * denom); } bool operator>(const Ratio<T>& rhs) const noexcept { return rhs < *this; } bool operator<=(const Ratio<T>& rhs) const noexcept { return !(*this > rhs); } Ratio<T> operator+(const Ratio<T>& rhs) noexcept { return Ratio<T>(numer * rhs.denom + denom * rhs.numer, denom * rhs.denom); } Ratio<T> operator-(const Ratio<T>& rhs) noexcept { return Ratio<T>(numer * rhs.denom - denom * rhs.numer, denom * rhs.denom); } Ratio<T> operator*(const Ratio<T>& rhs) noexcept { return Ratio<T>(numer * rhs.numer, denom * rhs.denom); } }; struct xy { ll x; ll y; }; struct t { map<Ratio<>, ll> m; ll c_0 = 0; ll c_1 = 0; }; int main() { cin.tie(nullptr); ios::sync_with_stdio(false); ll n; cin >> n; vector<xy> v(n); REP(i, n) { cin >> v[i].x >> v[i].y; } map<pl, t> mp; REP(i, n) REPI(j, i + 1, n) { pair<ll, ll> key = { v[j].x + v[i].x, v[j].y + v[i].y }; ll dx = v[j].x - v[i].x; ll dy = v[j].y - v[i].y; if (dx == 0) { mp[key].c_0++; } else if (dy == 0) { mp[key].c_1++; } else { Ratio<> r(dy, dx); mp[key].m[r]++; } } ll ans = 0; REPE(x, mp) { ans += (x.second.c_0 * x.second.c_1); REPE(y, x.second.m) { if (y.first.numer < 0) continue; auto rev = Ratio<>(-y.first.denom, y.first.numer); auto it = x.second.m.find(rev); if (it == x.second.m.end()) continue; ans += y.second * it->second; } } cout << ans << endl; }