結果
| 問題 |
No.3226 2×2行列累乗
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2025-08-08 22:03:37 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 2,502 bytes |
| コンパイル時間 | 2,494 ms |
| コンパイル使用メモリ | 278,388 KB |
| 実行使用メモリ | 7,720 KB |
| 最終ジャッジ日時 | 2025-08-08 22:03:41 |
| 合計ジャッジ時間 | 3,524 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 27 |
ソースコード
#include <bits/stdc++.h>
static inline constexpr void mul(std::array<std::array<uint_fast32_t, 2>, 2>& result, const std::array<std::array<uint_fast32_t, 2>, 2>& a, const std::array<std::array<uint_fast32_t, 2>, 2>& b, const uint_fast32_t K) noexcept
{
for (uint_fast32_t i = 0; i != 2; ++i)
for (uint_fast32_t j = 0; j != 2; ++j)
result[i][j] = (static_cast<uint_fast64_t>(a[i][0]) * b[0][j] + static_cast<uint_fast64_t>(a[i][1]) * b[1][j]) % K;
}
static inline constexpr std::array<std::array<uint_fast32_t, 2>, 2> prepare(const std::array<std::array<int_fast32_t, 2>, 2>& M, const uint_fast32_t K) noexcept
{
std::array<std::array<uint_fast32_t, 2>, 2> new_M = { { 0, }, };
for (uint_fast32_t i = 0; i != 2; ++i)
for (uint_fast32_t j = 0; j != 2; ++j)
new_M[i][j] = (M[i][j] + K * UINT64_C(50'000'000)) % K;
return new_M;
}
static inline constexpr std::pair<uint_fast32_t, uint_fast32_t> solve(const std::array<std::array<uint_fast32_t, 2>, 2>& M, const uint_fast32_t S, const uint_fast32_t T, const uint_fast64_t N, const uint_fast32_t K) noexcept
{
std::array<std::array<std::array<uint_fast32_t, 2>, 2>, 2> ans_dp = { std::array<std::array<uint_fast32_t, 2>, 2>{ std::array<uint_fast32_t, 2>{ 1, 0 }, std::array<uint_fast32_t, 2>{ 0, 1 } }, std::array<std::array<uint_fast32_t, 2>, 2>{ std::array<uint_fast32_t, 2>{ 1, 0 }, std::array<uint_fast32_t, 2>{ 0, 1 } } };
std::array<std::array<std::array<uint_fast32_t, 2>, 2>, 2> base_dp = { M, { { 0, }, } };
for (uint_fast32_t i = 0; i != 60; ++i)
{
if ((N >> i) & 1) mul(ans_dp[(i & 1) ^ 1], ans_dp[i & 1], base_dp[i & 1], K);
else ans_dp[(i & 1) ^ 1] = ans_dp[i & 1];
mul(base_dp[(i & 1) ^ 1], base_dp[i & 1], base_dp[i & 1], K);
}
return { (static_cast<uint_fast64_t>(ans_dp[0][0][0]) * S + static_cast<uint_fast64_t>(ans_dp[0][0][1]) * T) % K, (static_cast<uint_fast64_t>(ans_dp[0][1][0]) * S + static_cast<uint_fast64_t>(ans_dp[0][1][1]) * T) % K };
}
static inline void output(const std::pair<uint_fast32_t, uint_fast32_t>& ans) noexcept
{
std::cout << ans.first << ' ' << ans.second << '\n';
}
int main()
{
std::cin.tie(nullptr);
std::ios::sync_with_stdio(false);
std::array<std::array<int_fast32_t, 2>, 2> M;
int_fast32_t S, T;
uint_fast64_t N;
uint_fast32_t K, i, j;
for (i = 0; i != 2; ++i)
for (j = 0; j != 2; ++j)
std::cin >> M[i][j];
std::cin >> S >> T >> N >> K;
output(solve(prepare(M, K), (S + K * UINT64_C(50'000'000)) % K, (T + K * UINT64_C(50'000'000)) % K, N, K));
return 0;
}