結果
| 問題 | No.2517 Right Triangles on Circle |
| ユーザー |
 ZrjaK
|
| 提出日時 | 2023-11-08 17:17:02 |
| 言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
| 結果 |
AC
|
| 実行時間 | 420 ms / 2,000 ms |
| コード長 | 15,807 bytes |
| コンパイル時間 | 4,752 ms |
| コンパイル使用メモリ | 316,684 KB |
| 実行使用メモリ | 32,512 KB |
| 最終ジャッジ日時 | 2024-09-25 23:45:35 |
| 合計ジャッジ時間 | 8,803 ms |
|
ジャッジサーバーID （参考情報） |
judge3 / judge4 |
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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
5,248 KB |
| testcase_01 | AC | 1 ms
5,376 KB |
| testcase_02 | AC | 2 ms
5,376 KB |
| testcase_03 | AC | 1 ms
5,376 KB |
| testcase_04 | AC | 2 ms
5,376 KB |
| testcase_05 | AC | 1 ms
5,376 KB |
| testcase_06 | AC | 2 ms
5,376 KB |
| testcase_07 | AC | 2 ms
5,376 KB |
| testcase_08 | AC | 1 ms
5,376 KB |
| testcase_09 | AC | 1 ms
5,376 KB |
| testcase_10 | AC | 2 ms
5,376 KB |
| testcase_11 | AC | 2 ms
5,376 KB |
| testcase_12 | AC | 2 ms
5,376 KB |
| testcase_13 | AC | 248 ms
18,432 KB |
| testcase_14 | AC | 29 ms
5,376 KB |
| testcase_15 | AC | 276 ms
25,600 KB |
| testcase_16 | AC | 420 ms
32,512 KB |
| testcase_17 | AC | 209 ms
20,608 KB |
| testcase_18 | AC | 187 ms
19,584 KB |
| testcase_19 | AC | 173 ms
17,664 KB |
| testcase_20 | AC | 171 ms
18,048 KB |
| testcase_21 | AC | 285 ms
24,576 KB |
| testcase_22 | AC | 11 ms
5,376 KB |
| testcase_23 | AC | 183 ms
19,200 KB |
| testcase_24 | AC | 74 ms
10,752 KB |
| testcase_25 | AC | 10 ms
5,376 KB |
| testcase_26 | AC | 232 ms
22,016 KB |
| testcase_27 | AC | 11 ms
5,376 KB |
| testcase_28 | AC | 30 ms
6,656 KB |
| testcase_29 | AC | 69 ms
10,368 KB |
| testcase_30 | AC | 40 ms
7,552 KB |
| testcase_31 | AC | 185 ms
19,328 KB |
ソースコード
#ifdef ONLINE_JUDGE
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#endif
#include <bits/stdc++.h>
#include <ext/rope>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/hash_policy.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/trie_policy.hpp>
#include <ext/pb_ds/priority_queue.hpp>
using namespace std;
using namespace __gnu_cxx;
using namespace __gnu_pbds;
template <class T> using pbds_set = tree<T, null_type, less_equal<T>, rb_tree_tag,tree_order_statistics_node_update>;
using Trie = trie<string, null_type, trie_string_access_traits<>, pat_trie_tag, trie_prefix_search_node_update>;
// template <class T> using heapq = __gnu_pbds::priority_queue<T, greater<T>, pairing_heap_tag>;
template <class T> using heapq = std::priority_queue<T, vector<T>, greater<T>>;
using ll = long long;
using u32 = unsigned int;
using u64 = unsigned long long;
using i128 = __int128;
using u128 = __uint128_t;
using ld = long double;
using ui = unsigned int;
using ull = unsigned long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pdd = pair<ld, ld>;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using vll = vector<ll>;
using vvll = vector<vector<ll>>;
using vpii = vector<pii>;
using vpll = vector<pll>;
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>;
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 = std::priority_queue<T>;
template <class T>
using pqg = std::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__))))
#define lb lower_bound
#define ub upper_bound
#define pb push_back
#define pf push_front
#define eb emplace_back
#define fi first
#define se second
#define overload4(_1, _2, _3, _4, name, ...) name
#define overload3(_1, _2, _3, name, ...) name
#define rep1(n) for(ll _ = 0; _ < n; ++_)
#define rep2(i, n) for(ll i = 0; i < n; ++i)
#define rep3(i, a, b) for(ll i = a; i < b; ++i)
#define rep4(i, a, b, c) for(int i = a; i < b; i += c)
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1) (__VA_ARGS__)
#define rrep1(n) for(ll i = n; i--; )
#define rrep2(i, n) for(ll i = n; i--; )
#define rrep3(i, a, b) for(ll i = a; i > b; i--)
#define rrep4(i, a, b, c) for(ll i = a; i > b; i -= c)
#define rrep(...) overload4(__VA_ARGS__, rrep4, rrep3, rrep2, rrep1) (__VA_ARGS__)
#define each1(i, a) for(auto&& i : a)
#define each2(x, y, a) for(auto&& [x, y] : a)
#define each3(x, y, z, a) for(auto&& [x, y, z] : a)
#define each(...) overload4(__VA_ARGS__, each3, each2, each1) (__VA_ARGS__)
#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 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 len(x) (int)x.size()
#define elif else if
#define all1(i) begin(i), end(i)
#define all2(i, a) begin(i), begin(i) + a
#define all3(i, a, b) begin(i) + a, begin(i) + b
#define all(...) overload3(__VA_ARGS__, all3, all2, all1) (__VA_ARGS__)
#define rall1(i) rbegin(i), rend(i)
#define rall2(i, a) rbegin(i), rbegin(i) + a
#define rall3(i, a, b) rbegin(i) + a, rbegin(i) + b
#define rall(...) overload3(__VA_ARGS__, rall3, rall2, rall1) (__VA_ARGS__)
#define mst(x, a) memset(x, a, sizeof(x))
#define bitcnt(x) (__builtin_popcountll(x))
#define endl "\n"
#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()
#define SORT(a) sort(all(a))
#define REV(a) reverse(all(a))
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); }
// (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<class T> auto max(const T& a){ return *max_element(all(a)); }
template<class T> auto min(const T& a){ return *min_element(all(a)); }
template <typename T, typename U>
T ceil(T x, U y) {
return (x > 0 ? (x + y - 1) / y : x / y);
}
template <typename T, typename U>
T floor(T x, U y) {
return (x > 0 ? x / y : (x - y + 1) / y);
}
template <typename T, typename U>
pair<T, T> divmod(T x, U y) {
T q = floor(x, y);
return {q, x - q * y};
}
template <typename T, typename U>
T SUM(const vector<U> &A) {
T sum = 0;
for (auto &&a: A) sum += a;
return sum;
}
template <typename T, typename U>
vector<T> cumsum(vector<U> &A, int off = 1) {
int N = A.size();
vector<T> B(N + 1);
for (int i = 0; i < N; i++) B[i + 1] = B[i] + A[i];
if (off == 0) B.erase(B.begin());
return B;
}
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;
}
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;
}
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) {
assert(!que.empty());
T a = que.top();
que.pop();
return a;
}
template <typename T>
T POP(vc<T> &que) {
assert(!que.empty());
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) {
while (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);
}
mt19937 rng( chrono::steady_clock::now().time_since_epoch().count() );
#define Ran(a, b) rng() % ( (b) - (a) + 1 ) + (a)
struct custom_hash {
static uint64_t splitmix64(uint64_t x) {
// http://xorshift.di.unimi.it/splitmix64.c
x += 0x9e3779b97f4a7c15;
x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
return x ^ (x >> 31);
}
size_t operator()(uint64_t x) const {
static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
return splitmix64(x + FIXED_RANDOM);
}
size_t operator()(pair<uint64_t,uint64_t> x) const {
static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
return splitmix64(x.first + FIXED_RANDOM) ^ (splitmix64(x.second + FIXED_RANDOM) >> 1);
}
};
const i128 ONE = 1;
istream &operator>>(istream &in, i128 &x) {
string s;
in >> s;
bool minus = false;
if (s[0] == '-') {
minus = true;
s.erase(s.begin());
}
x = 0;
for (auto i : s) {
x *= 10;
x += i - '0';
}
if (minus) x = -x;
return in;
}
ostream &operator<<(ostream &out, i128 x) {
string s;
bool minus = false;
if (x < 0) {
minus = true;
x = -x;
}
while (x) {
s.push_back(x % 10 + '0');
x /= 10;
}
if (s.empty()) s = "0";
if (minus) out << '-';
reverse(s.begin(), s.end());
out << s;
return out;
}
template <class T> ostream &operator<<(ostream &os, const set<T> &v) {
for(auto it = begin(v); it != end(v); ++it) {
if(it == begin(v)) os << *it;
else os << " " << *it;
}
return os;
}
template <class T> ostream &operator<<(ostream &os, const multiset<T> &v) {
for(auto it = begin(v); it != end(v); ++it) {
if(it == begin(v)) os << *it;
else os << " " << *it;
}
return os;
}
template <class T> ostream &operator<<(ostream &os, const pbds_set<T> &v) {
for(auto it = begin(v); it != end(v); ++it) {
if(it == begin(v)) os << *it;
else os << " " << *it;
}
return os;
}
template <class T, class S> istream &operator>>(istream &in, pair<T, S> &p) {
in >> p.first >> p.second;
return in;
}
template <class T, class S> ostream &operator<<(ostream &os, const pair<T, S> &p) {
os << p.first << " " << p.second;
return os;
}
template <class T, size_t size> istream &operator>>(istream &in, array<T, size> &v) {
for(auto& x : v) in >> x;
return in;
}
template <class T, size_t size> ostream &operator<<(ostream &os, const array<T, size> &v) {
for(int i = 0; i < size; i++) {
if(i == 0) os << v[i];
else os << " " << v[i];
}
return os;
}
template <class T> istream &operator>>(istream &in, vector<T> &v) {
for(auto& x : v) in >> x;
return in;
}
template <class T> ostream &operator<<(ostream &os, const vector<T> &v) {
for(auto it = begin(v); it != end(v); ++it) {
if(it == begin(v)) os << *it;
else os << " " << *it;
}
return os;
}
inline void print() { std::cout << '\n'; }
template <typename Head, typename... Tail>
inline void print(const Head& head, const Tail &...tails) {
std::cout << head;
if (sizeof...(tails)) std::cout << ' ';
print(tails...);
}
template <typename Iterable>
auto print_all(const Iterable& v, std::string sep = " ", std::string end = "\n") -> decltype(std::cout << *v.begin(), void()) {
for (auto it = v.begin(); it != v.end();) {
std::cout << *it;
if (++it != v.end()) std::cout << sep;
}
std::cout << end;
}
void read() {}
template <class Head, class... Tail>
void read(Head &head, Tail &... tail) {
cin >> head;
read(tail...);
}
#define INT(...) \
int __VA_ARGS__; \
read(__VA_ARGS__)
#define LL(...) \
ll __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); }
ll gcd(ll x, ll y) {
if(!x) return y;
if(!y) return x;
int t = __builtin_ctzll(x | y);
x >>= __builtin_ctzll(x);
do {
y >>= __builtin_ctzll(y);
if (x > y) swap(x, y);
y -= x;
} while (y);
return x << t;
}
ll lcm(ll x, ll y) { return x * y / gcd(x, y); }
ll exgcd(ll a, ll b, ll &x, ll &y) {
if(!b) return x = 1, y = 0, a;
ll d = exgcd(b, a % b, x, y);
ll t = x;
x = y;
y = t - a / b * x;
return d;
}
ll max(ll x, ll y) { return x > y ? x : y; }
ll min(ll x, ll y) { return x < y ? x : y; }
ll Mod(ll x, int mod) { return (x % mod + mod) % mod; }
ll pow(ll x, ll y, ll mod){
ll res = 1, cur = x;
while (y) {
if (y & 1) res = res * cur % mod;
cur = ONE * cur * cur % mod;
y >>= 1;
}
return res % mod;
}
ll probabilityMod(ll x, ll y, ll mod) {
return x * pow(y, mod-2, mod) % mod;
}
vvi getGraph(int n, int m, bool directed = false) {
vvi res(n);
rep(_, 0, m) {
int u, v;
cin >> u >> v;
u--, v--;
res[u].emplace_back(v);
if(!directed) res[v].emplace_back(u);
}
return res;
}
vector<vpii> getWeightedGraph(int n, int m, bool directed = false) {
vector<vpii> res(n);
rep(_, 0, m) {
int u, v, w;
cin >> u >> v >> w;
u--, v--;
res[u].emplace_back(v, w);
if(!directed) res[v].emplace_back(u, w);
}
return res;
}
template <class... Args> auto ndvector(size_t n, Args &&...args) {
if constexpr (sizeof...(args) == 1) {
return vector(n, args...);
} else {
return vector(n, ndvector(args...));
}
}
const ll LINF = 0x1fffffffffffffff;
const ll MINF = 0x7fffffffffff;
const int INF = 0x3fffffff;
const int MOD = 1000000007;
const int MODD = 998244353;
const int N = 1e6 + 10;
void solve() {
INT(n, m);
VEC(int, a, n);
if (m % 2) return print(0);
m /= 2;
map<int, int> M;
each(i, a) M[i]++;
ll ans = 0;
each(i, _, M) if (i <= m) {
ans += 1ll * M[i] * M[i + m] * (n - M[i] - M[i + m]);
}
print(ans);
}
signed main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cout << fixed << setprecision(15);
int t = 1;
// cin >> t;
while (t--) {
solve();
}
return 0;
}