結果
問題 | No.1509 Swap!! |
ユーザー | keijak |
提出日時 | 2021-05-14 23:28:17 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,209 bytes |
コンパイル時間 | 2,081 ms |
コンパイル使用メモリ | 203,116 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-02 05:20:50 |
合計ジャッジ時間 | 5,870 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | WA | - |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | AC | 31 ms
5,248 KB |
testcase_28 | AC | 31 ms
5,248 KB |
testcase_29 | AC | 31 ms
5,248 KB |
testcase_30 | WA | - |
ソースコード
#include <bits/stdc++.h> #include <optional> #define REP_(i, a_, b_, a, b, ...) \ for (int i = (a), END_##i = (b); i < END_##i; ++i) #define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__) #define ALL(x) std::begin(x), std::end(x) using i64 = long long; template <typename T, typename U> inline bool chmax(T &a, U b) { return a < b and ((a = std::move(b)), true); } template <typename T, typename U> inline bool chmin(T &a, U b) { return a > b and ((a = std::move(b)), true); } template <typename T> inline int ssize(const T &a) { return (int)std::size(a); } template <typename T> std::istream &operator>>(std::istream &is, std::vector<T> &a) { for (auto &x : a) is >> x; return is; } template <typename T, typename U> std::ostream &operator<<(std::ostream &os, const std::pair<T, U> &a) { return os << "(" << a.first << ", " << a.second << ")"; } template <typename Container> std::ostream &print_seq(const Container &a, std::string_view sep = " ", std::string_view ends = "\n", std::ostream &os = std::cout) { auto b = std::begin(a), e = std::end(a); for (auto it = std::begin(a); it != e; ++it) { if (it != b) os << sep; os << *it; } return os << ends; } template <typename T, typename = void> struct is_iterable : std::false_type {}; template <typename T> struct is_iterable<T, std::void_t<decltype(std::begin(std::declval<T>())), decltype(std::end(std::declval<T>()))>> : std::true_type {}; template <typename T, typename = std::enable_if_t< is_iterable<T>::value && !std::is_same<T, std::string_view>::value && !std::is_same<T, std::string>::value>> std::ostream &operator<<(std::ostream &os, const T &a) { return print_seq(a, ", ", "", (os << "{")) << "}"; } #ifdef ENABLE_DEBUG #include "debug_dump.hpp" #else #define DUMP(...) #endif using namespace std; template <class T> T floor_div(T x, T y) { assert(y != 0); if (y < 0) x = -x, y = -y; return (x >= 0) ? (x / y) : ((x - y + 1) / y); } // Etended Euclidean algorithm. // Returns [g, x, y] where g = a*x + b*y = GCD(a, b). // Note that g, x, y can be negative. std::array<i64, 3> ext_gcd(i64 a, i64 b) { if (b == 0) return {a, 1LL, 0LL}; auto res = ext_gcd(b, a % b); // = (g, x, y) res[1] -= (a / b) * res[2]; std::swap(res[1], res[2]); return res; // = (g, y, x - (a/b)*y) } std::optional<std::array<i64, 2>> linear_diophantine(i64 a, i64 b, i64 c) { auto [g, x, y] = ext_gcd(a, b); if (g < 0) { g *= -1, x *= -1, y *= -1; } if (c % g != 0) return std::nullopt; a /= g, b /= g, c /= g; x *= c, y *= c; auto m = floor_div(x, b); x -= m * b; y += m * a; assert(0 <= x and x < b); return std::array{x, y}; } auto solve() { i64 n, a, b; cin >> n >> a >> b; if (gcd(a, b) != 1) return false; if (a < b) swap(a, b); auto res = linear_diophantine(a, b, 1); if (!res) return false; auto [p, q] = *res; return n >= 1 + p * a; } int main() { ios_base::sync_with_stdio(false), cin.tie(nullptr); int t; cin >> t; REP(i, t) cout << (solve() ? "YES" : "NO") << "\n"; }