結果
問題 | No.1232 2^x = x |
ユーザー |
|
提出日時 | 2020-09-18 22:09:55 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 3,142 bytes |
コンパイル時間 | 1,927 ms |
コンパイル使用メモリ | 200,264 KB |
最終ジャッジ日時 | 2025-01-14 17:15:58 |
ジャッジサーバーID (参考情報) |
judge3 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 3 |
ソースコード
#include <bits/stdc++.h>#ifdef DEBUG#include <Mylib/Debug/debug.cpp>#else#define dump(...) ((void)0)#endiftemplate <typename T, typename U>bool chmin(T &a, const U &b){return (a > b ? a = b, true : false);}template <typename T, typename U>bool chmax(T &a, const U &b){return (a < b ? a = b, true : false);}template <typename T, size_t N, typename U>void fill_array(T (&a)[N], const U &v){std::fill((U*)a, (U*)(a + N), v);}template <typename T, size_t N, size_t I = N>auto make_vector(const std::array<int, N> &a, T value = T()){static_assert(I >= 1);static_assert(N >= 1);if constexpr (I == 1){return std::vector<T>(a[N - I], value);}else{return std::vector(a[N - I], make_vector<T, N, I - 1>(a, value));}}template <typename T>std::ostream& operator<<(std::ostream &s, const std::vector<T> &a){for(auto it = a.begin(); it != a.end(); ++it){if(it != a.begin()) s << " ";s << *it;}return s;}template <typename T>std::istream& operator>>(std::istream &s, std::vector<T> &a){for(auto &x : a) s >> x;return s;}namespace haar_lib {std::tuple<int64_t, int64_t, int64_t> ext_gcd(int64_t a, int64_t b){if(b == 0) return std::make_tuple(a, 1, 0);int64_t d, p, q;std::tie(d, q, p) = ext_gcd(b, (a + b) % b);return std::make_tuple(d, p, q - a / b * p);}}namespace haar_lib {bool chinese_remainder_algorithm(int64_t b1, int64_t m1, int64_t b2, int64_t m2, int64_t &r, int64_t &m){int64_t p, q, d;std::tie(d, p, q) = ext_gcd(m1, m2);if((b2 - b1) % d != 0) return false;m = m1 * m2 / d;int64_t t = ((b2 - b1) * p / d) % (m2 / d);r = (b1 + m1 * t + m) % m;return true;}bool chinese_remainder_algorithm(const std::vector<int64_t> &bs, const std::vector<int64_t> &ms, int64_t &r, int64_t &m){int64_t R = 0, M = 1;for(int i = 0; i < (int)bs.size(); ++i){if(not chinese_remainder_algorithm(R, M, bs[i], ms[i], r, m)) return false;R = r;M = m;}return true;}}namespace haar_lib {int64_t mod_pow(int64_t n, int64_t p, int64_t m){int64_t ret = 1;while(p > 0){if(p & 1) (ret *= n) %= m;(n *= n) %= m;p >>= 1;}return ret;}}namespace haar_lib {}namespace solver {using namespace haar_lib;constexpr int m1000000007 = 1000000007;constexpr int m998244353 = 998244353;void init(){std::cin.tie(0);std::ios::sync_with_stdio(false);std::cout << std::fixed << std::setprecision(12);std::cerr << std::fixed << std::setprecision(12);std::cin.exceptions(std::ios_base::failbit);}void solve(){int N; std::cin >> N;while(N--){int64_t p; std::cin >> p;if(p == 2) std::cout << 2 << "\n";else{int64_t ans, m;chinese_remainder_algorithm(0, p - 1, 1, p, ans, m);dump(mod_pow(2, ans, p) == ans % p);std::cout << ans << "\n";}}}}int main(){solver::init();while(true){try{solver::solve();}catch(const std::istream::failure &e){break;}}return 0;}