結果
問題 | No.2873 Kendall's Tau |
ユーザー | Moss_Local |
提出日時 | 2024-09-06 22:42:59 |
言語 | C++23(gcc13) (gcc 13.2.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 18,558 bytes |
コンパイル時間 | 5,804 ms |
コンパイル使用メモリ | 341,276 KB |
実行使用メモリ | 27,728 KB |
最終ジャッジ日時 | 2024-09-06 22:44:06 |
合計ジャッジ時間 | 14,944 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | AC | 139 ms
9,440 KB |
testcase_14 | WA | - |
testcase_15 | AC | 76 ms
7,792 KB |
testcase_16 | AC | 77 ms
7,188 KB |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | AC | 79 ms
7,720 KB |
testcase_21 | WA | - |
testcase_22 | AC | 118 ms
9,264 KB |
testcase_23 | WA | - |
testcase_24 | AC | 35 ms
6,940 KB |
testcase_25 | AC | 71 ms
7,388 KB |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | AC | 57 ms
6,940 KB |
testcase_31 | AC | 107 ms
8,108 KB |
testcase_32 | WA | - |
ソースコード
#line 1 "library/my_template.hpp" #if defined(LOCAL) #include <my_template_compiled.hpp> #else // https://codeforces.com/blog/entry/96344 #pragma GCC optimize("Ofast,unroll-loops") // いまの CF だとこれ入れると動かない? // #pragma GCC target("avx2,popcnt") #include <bits/stdc++.h> using namespace std; using ll = long long; using u32 = unsigned int; using u64 = unsigned long long; using i128 = __int128; using u128 = unsigned __int128; using f128 = __float128; template <class T> constexpr T infty = 0; template <> constexpr int infty<int> = 1'000'000'000; template <> constexpr ll infty<ll> = ll(infty<int>) * infty<int> * 2; template <> constexpr u32 infty<u32> = infty<int>; template <> constexpr u64 infty<u64> = infty<ll>; template <> constexpr i128 infty<i128> = i128(infty<ll>) * infty<ll>; template <> constexpr double infty<double> = infty<ll>; template <> constexpr long double infty<long double> = infty<ll>; using pi = pair<ll, ll>; using vi = vector<ll>; template <class T> using vc = vector<T>; template <class T> using vvc = vector<vc<T>>; template <class T> using vvvc = vector<vvc<T>>; template <class T> using vvvvc = vector<vvvc<T>>; template <class T> using vvvvvc = vector<vvvvc<T>>; template <class T> using pq = priority_queue<T>; template <class T> using pqg = priority_queue<T, vector<T>, greater<T>>; #define vv(type, name, h, ...) \ vector<vector<type>> name(h, vector<type>(__VA_ARGS__)) #define vvv(type, name, h, w, ...) \ vector<vector<vector<type>>> name( \ h, vector<vector<type>>(w, vector<type>(__VA_ARGS__))) #define vvvv(type, name, a, b, c, ...) \ vector<vector<vector<vector<type>>>> name( \ a, vector<vector<vector<type>>>( \ b, vector<vector<type>>(c, vector<type>(__VA_ARGS__)))) // https://trap.jp/post/1224/ #define FOR1(a) for(ll _ = 0; _ < ll(a); ++_) #define FOR2(i, a) for(ll i = 0; i < ll(a); ++i) #define FOR3(i, a, b) for(ll i = a; i < ll(b); ++i) #define FOR4(i, a, b, c) for(ll i = a; i < ll(b); i += (c)) #define FOR1_R(a) for(ll i = (a) - 1; i >= ll(0); --i) #define FOR2_R(i, a) for(ll i = (a) - 1; i >= ll(0); --i) #define FOR3_R(i, a, b) for(ll i = (b) - 1; i >= ll(a); --i) #define overload4(a, b, c, d, e, ...) e #define overload3(a, b, c, d, ...) d #define FOR(...) overload4(__VA_ARGS__, FOR4, FOR3, FOR2, FOR1)(__VA_ARGS__) #define FOR_R(...) overload3(__VA_ARGS__, FOR3_R, FOR2_R, FOR1_R)(__VA_ARGS__) #define FOR_subset(t, s) \ for(ll t = (s); t >= 0; t = (t == 0 ? -1 : (t - 1) & (s))) #define all(x) x.begin(), x.end() #define len(x) ll(x.size()) #define elif else if #define eb emplace_back #define mp make_pair #define mt make_tuple #define fi first #define se second #define stoi stoll int popcnt(int x) { return __builtin_popcount(x); } int popcnt(u32 x) { return __builtin_popcount(x); } int popcnt(ll x) { return __builtin_popcountll(x); } int popcnt(u64 x) { return __builtin_popcountll(x); } int popcnt_mod_2(int x) { return __builtin_parity(x); } int popcnt_mod_2(u32 x) { return __builtin_parity(x); } int popcnt_mod_2(ll x) { return __builtin_parityll(x); } int popcnt_mod_2(u64 x) { return __builtin_parityll(x); } // (0, 1, 2, 3, 4) -> (-1, 0, 1, 1, 2) int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); } int topbit(u32 x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); } int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); } int topbit(u64 x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); } // (0, 1, 2, 3, 4) -> (-1, 0, 1, 0, 2) int lowbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); } int lowbit(u32 x) { return (x == 0 ? -1 : __builtin_ctz(x)); } int lowbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); } int lowbit(u64 x) { return (x == 0 ? -1 : __builtin_ctzll(x)); } template <typename T> T floor(T a, T b) { return a / b - (a % b && (a ^ b) < 0); } template <typename T> T ceil(T x, T y) { return floor(x + y - 1, y); } template <typename T> T bmod(T x, T y) { return x - y * floor(x, y); } template <typename T> pair<T, T> divmod(T x, T y) { T q = floor(x, y); return {q, x - q * y}; } template <typename T, typename U> T SUM(const vector<U> &A) { T sm = 0; for(auto &&a : A) sm += a; return sm; } #define MIN(v) *min_element(all(v)) #define MAX(v) *max_element(all(v)) #define LB(c, x) distance((c).begin(), lower_bound(all(c), (x))) #define UB(c, x) distance((c).begin(), upper_bound(all(c), (x))) #define UNIQUE(x) \ sort(all(x)), x.erase(unique(all(x)), x.end()), x.shrink_to_fit() template <typename T> T POP(deque<T> &que) { T a = que.front(); que.pop_front(); return a; } template <typename T> T POP(pq<T> &que) { T a = que.top(); que.pop(); return a; } template <typename T> T POP(pqg<T> &que) { T a = que.top(); que.pop(); return a; } template <typename T> T POP(vc<T> &que) { T a = que.back(); que.pop_back(); return a; } template <typename F> ll binary_search(F check, ll ok, ll ng, bool check_ok = true) { if(check_ok) assert(check(ok)); while(abs(ok - ng) > 1) { auto x = (ng + ok) / 2; (check(x) ? ok : ng) = x; } return ok; } template <typename F> double binary_search_real(F check, double ok, double ng, int iter = 100) { FOR(iter) { double x = (ok + ng) / 2; (check(x) ? ok : ng) = x; } return (ok + ng) / 2; } template <class T, class S> inline bool chmax(T &a, const S &b) { return (a < b ? a = b, 1 : 0); } template <class T, class S> inline bool chmin(T &a, const S &b) { return (a > b ? a = b, 1 : 0); } // ? は -1 vc<int> s_to_vi(const string &S, char first_char) { vc<int> A(S.size()); FOR(i, S.size()) { A[i] = (S[i] != '?' ? S[i] - first_char : -1); } return A; } template <typename T, typename U> vector<T> cumsum(vector<U> &A, int off = 1) { int N = A.size(); vector<T> B(N + 1); FOR(i, N) { B[i + 1] = B[i] + A[i]; } if(off == 0) B.erase(B.begin()); return B; } // stable sort template <typename T> vector<int> argsort(const vector<T> &A) { vector<int> ids(len(A)); iota(all(ids), 0); sort(all(ids), [&](int i, int j) { return (A[i] == A[j] ? i < j : A[i] < A[j]); }); return ids; } // A[I[0]], A[I[1]], ... template <typename T> vc<T> rearrange(const vc<T> &A, const vc<int> &I) { vc<T> B(len(I)); FOR(i, len(I)) B[i] = A[I[i]]; return B; } #endif #line 1 "library/other/io.hpp" #define FASTIO #include <unistd.h> // https://judge.yosupo.jp/submission/21623 namespace fastio { static constexpr uint32_t SZ = 1 << 17; char ibuf[SZ]; char obuf[SZ]; char out[100]; // pointer of ibuf, obuf uint32_t pil = 0, pir = 0, por = 0; struct Pre { char num[10000][4]; constexpr Pre() : num() { for(int i = 0; i < 10000; i++) { int n = i; for(int j = 3; j >= 0; j--) { num[i][j] = n % 10 | '0'; n /= 10; } } } } constexpr pre; inline void load() { memcpy(ibuf, ibuf + pil, pir - pil); pir = pir - pil + fread(ibuf + pir - pil, 1, SZ - pir + pil, stdin); pil = 0; if(pir < SZ) ibuf[pir++] = '\n'; } inline void flush() { fwrite(obuf, 1, por, stdout); por = 0; } void rd(char &c) { do { if(pil + 1 > pir) load(); c = ibuf[pil++]; } while(isspace(c)); } void rd(string &x) { x.clear(); char c; do { if(pil + 1 > pir) load(); c = ibuf[pil++]; } while(isspace(c)); do { x += c; if(pil == pir) load(); c = ibuf[pil++]; } while(!isspace(c)); } template <typename T> void rd_real(T &x) { string s; rd(s); x = stod(s); } template <typename T> void rd_integer(T &x) { if(pil + 100 > pir) load(); char c; do c = ibuf[pil++]; while(c < '-'); bool minus = 0; if constexpr(is_signed<T>::value || is_same_v<T, i128>) { if(c == '-') { minus = 1, c = ibuf[pil++]; } } x = 0; while('0' <= c) { x = x * 10 + (c & 15), c = ibuf[pil++]; } if constexpr(is_signed<T>::value || is_same_v<T, i128>) { if(minus) x = -x; } } void rd(int &x) { rd_integer(x); } void rd(ll &x) { rd_integer(x); } void rd(i128 &x) { rd_integer(x); } void rd(u32 &x) { rd_integer(x); } void rd(u64 &x) { rd_integer(x); } void rd(u128 &x) { rd_integer(x); } void rd(double &x) { rd_real(x); } void rd(long double &x) { rd_real(x); } void rd(f128 &x) { rd_real(x); } template <class T, class U> void rd(pair<T, U> &p) { return rd(p.first), rd(p.second); } template <size_t N = 0, typename T> void rd_tuple(T &t) { if constexpr(N < std::tuple_size<T>::value) { auto &x = std::get<N>(t); rd(x); rd_tuple<N + 1>(t); } } template <class... T> void rd(tuple<T...> &tpl) { rd_tuple(tpl); } template <size_t N = 0, typename T> void rd(array<T, N> &x) { for(auto &d : x) rd(d); } template <class T> void rd(vc<T> &x) { for(auto &d : x) rd(d); } void read() {} template <class H, class... T> void read(H &h, T &...t) { rd(h), read(t...); } void wt(const char c) { if(por == SZ) flush(); obuf[por++] = c; } void wt(const string s) { for(char c : s) wt(c); } void wt(const char *s) { size_t len = strlen(s); for(size_t i = 0; i < len; i++) wt(s[i]); } template <typename T> void wt_integer(T x) { if(por > SZ - 100) flush(); if(x < 0) { obuf[por++] = '-', x = -x; } int outi; for(outi = 96; x >= 10000; outi -= 4) { memcpy(out + outi, pre.num[x % 10000], 4); x /= 10000; } if(x >= 1000) { memcpy(obuf + por, pre.num[x], 4); por += 4; } else if(x >= 100) { memcpy(obuf + por, pre.num[x] + 1, 3); por += 3; } else if(x >= 10) { int q = (x * 103) >> 10; obuf[por] = q | '0'; obuf[por + 1] = (x - q * 10) | '0'; por += 2; } else obuf[por++] = x | '0'; memcpy(obuf + por, out + outi + 4, 96 - outi); por += 96 - outi; } template <typename T> void wt_real(T x) { ostringstream oss; oss << fixed << setprecision(15) << double(x); string s = oss.str(); wt(s); } void wt(int x) { wt_integer(x); } void wt(ll x) { wt_integer(x); } void wt(i128 x) { wt_integer(x); } void wt(u32 x) { wt_integer(x); } void wt(u64 x) { wt_integer(x); } void wt(u128 x) { wt_integer(x); } void wt(double x) { wt_real(x); } void wt(long double x) { wt_real(x); } void wt(f128 x) { wt_real(x); } template <class T, class U> void wt(const pair<T, U> val) { wt(val.first); wt(' '); wt(val.second); } template <size_t N = 0, typename T> void wt_tuple(const T t) { if constexpr(N < std::tuple_size<T>::value) { if constexpr(N > 0) { wt(' '); } const auto x = std::get<N>(t); wt(x); wt_tuple<N + 1>(t); } } template <class... T> void wt(tuple<T...> tpl) { wt_tuple(tpl); } template <class T, size_t S> void wt(const array<T, S> val) { auto n = val.size(); for(size_t i = 0; i < n; i++) { if(i) wt(' '); wt(val[i]); } } template <class T> void wt(const vector<T> val) { auto n = val.size(); for(size_t i = 0; i < n; i++) { if(i) wt(' '); wt(val[i]); } } void print() { wt('\n'); } template <class Head, class... Tail> void print(Head &&head, Tail &&...tail) { wt(head); if(sizeof...(Tail)) wt(' '); print(forward<Tail>(tail)...); } // gcc expansion. called automaticall after main. void __attribute__((destructor)) _d() { flush(); } } // namespace fastio using fastio::flush; using fastio::print; using fastio::read; #if defined(LOCAL) #define SHOW(...) \ SHOW_IMPL(__VA_ARGS__, SHOW4, SHOW3, SHOW2, SHOW1)(__VA_ARGS__) #define SHOW_IMPL(_1, _2, _3, _4, NAME, ...) NAME #define SHOW1(x) print(#x, "=", (x)), flush() #define SHOW2(x, y) print(#x, "=", (x), #y, "=", (y)), flush() #define SHOW3(x, y, z) print(#x, "=", (x), #y, "=", (y), #z, "=", (z)), flush() #define SHOW4(x, y, z, w) \ print(#x, "=", (x), #y, "=", (y), #z, "=", (z), #w, "=", (w)), flush() #else #define SHOW(...) #endif #define INT(...) \ int __VA_ARGS__; \ read(__VA_ARGS__) #define LL(...) \ ll __VA_ARGS__; \ read(__VA_ARGS__) #define U32(...) \ u32 __VA_ARGS__; \ read(__VA_ARGS__) #define U64(...) \ u64 __VA_ARGS__; \ read(__VA_ARGS__) #define STR(...) \ string __VA_ARGS__; \ read(__VA_ARGS__) #define CHAR(...) \ char __VA_ARGS__; \ read(__VA_ARGS__) #define DBL(...) \ double __VA_ARGS__; \ read(__VA_ARGS__) #define VEC(type, name, size) \ vector<type> name(size); \ read(name) #define VV(type, name, h, w) \ vector<vector<type>> name(h, vector<type>(w)); \ read(name) void YES(bool t = 1) { print(t ? "YES" : "NO"); } void NO(bool t = 1) { YES(!t); } void Yes(bool t = 1) { print(t ? "Yes" : "No"); } void No(bool t = 1) { Yes(!t); } void yes(bool t = 1) { print(t ? "yes" : "no"); } void no(bool t = 1) { yes(!t); } #include <iomanip> // for precision #include <iostream> #include <set> #include <vector> using namespace std; struct Point { long long x, y; }; // カウント結果を保持する構造体 struct CountResult { long long P, Q; }; using namespace std; #include <atcoder/segtree> using namespace std; using namespace atcoder; // 座標圧縮用関数 vector<int> compress_coordinates(const vector<long long> &values) { vector<long long> sorted_values = values; sort(sorted_values.begin(), sorted_values.end()); sorted_values.erase(unique(sorted_values.begin(), sorted_values.end()), sorted_values.end()); vector<int> compressed(values.size()); for(size_t i = 0; i < values.size(); ++i) { compressed[i] = lower_bound(sorted_values.begin(), sorted_values.end(), values[i]) - sorted_values.begin(); } return compressed; } // セグメント木に使用するモノイド // 区間の合計を管理するため、モノイドの操作は加算、単位元は0とします int op(int a, int b) { return a + b; } int e() { return 0; } CountResult calculate_P_Q(const vector<Point> &points) { vector<long long> y_vals; for(const auto &p : points) { y_vals.push_back(p.y); } // Yの座標圧縮 vector<int> compressed_y = compress_coordinates(y_vals); int max_y = *max_element(compressed_y.begin(), compressed_y.end()); // AtCoder Libraryのセグメント木 segtree<int, op, e> seg_tree(max_y + 1); // 座標圧縮後のY値に対応するセグメント木 long long P = 0, Q = 0; long long prev_x = points[0].x; vector<int> y_values; // 圧縮されたY値のリスト for(size_t i = 0; i < points.size(); ++i) { const auto &p = points[i]; int comp_y = compressed_y[i]; // 圧縮されたY値を取得 if(p.x != prev_x) { // Xが変わったら、セグメント木にY値を追加 for(const auto &y : y_values) { seg_tree.set(y, seg_tree.get(y) + 1); // 値を更新 } y_values.clear(); } // 現在のp.yより小さい値のカウント (0からcomp_yまでの区間) P += seg_tree.prod(0, comp_y); // 現在のp.yより大きい値のカウント (comp_y+1からmax_yまでの区間) Q += seg_tree.prod(comp_y + 1, max_y + 1); // Y値を保存して、次の段階でセグメント木に追加 y_values.push_back(comp_y); prev_x = p.x; } return {P, Q}; } int main() { int N; cin >> N; vector<Point> points(N); for(int i = 0; i < N; i++) { cin >> points[i].x >> points[i].y; } // Xの値で昇順にソート(Xが同じ場合はYでソート) sort(points.begin(), points.end(), [](const Point &a, const Point &b) { return a.x < b.x || (a.x == b.x && a.y < b.y); }); // P と Q の計算 CountResult result = calculate_P_Q(points); long long P = result.P; long long Q = result.Q; // 全ペア数 // long long total_pairs = (long long)N * (N - 1) / 2; long long R = 0; long long S = 0; map<long long, long long> cnt_x; map<long long, long long> cnt_y; for(int i = 0; i < N; i++) { cnt_x[points[i].x]++; cnt_y[points[i].y]++; } // points for for(int i = 0; i < N; i++) { R += N - (cnt_x[points[i].x]); S += N - (cnt_y[points[i].y]); } R /= 2; S /= 2; // cout << P << " " << Q << " " << R << " " << S << endl; // ケンドールの順位相関係数 τ の計算 long double tau = (long double)(P - Q) / sqrt(double(R * S)); // 結果の出力(精度に注意) cout << fixed << setprecision(16) << tau << endl; return 0; }