//#define NDEBUG #pragma warning(disable : 4146) #include #include #include #include #include #include #include #include #include namespace n91 { using i32 = std::int32_t; using i64 = std::int64_t; using u32 = std::uint32_t; using u64 = std::uint64_t; using isize = std::ptrdiff_t; using usize = std::size_t; using f64 = double; struct rep { struct itr { usize i; constexpr itr(const usize i) noexcept : i(i) {} void operator++() noexcept { ++i; } constexpr usize operator*() const noexcept { return i; } constexpr bool operator!=(const itr x) const noexcept { return i != x.i; } }; const itr f, l; constexpr rep(const usize f, const usize l) noexcept : f(std::min(f, l)), l(l) {} constexpr auto begin() const noexcept { return f; } constexpr auto end() const noexcept { return l; } }; struct revrep { struct itr { usize i; constexpr itr(const usize i) noexcept : i(i) {} void operator++() noexcept { --i; } constexpr usize operator*() const noexcept { return i; } constexpr bool operator!=(const itr x) const noexcept { return i != x.i; } }; const itr f, l; constexpr revrep(const usize f, const usize l) noexcept : f(l - 1), l(std::min(f, l) - 1) {} constexpr auto begin() const noexcept { return f; } constexpr auto end() const noexcept { return l; } }; template auto md_vec(const usize n, const T &value) { return std::vector(n, value); } template auto md_vec(const usize n, Args... args) { return std::vector(n, md_vec(args...)); } template constexpr T difference(const T &a, const T &b) noexcept { return a < b ? b - a : a - b; } template void chmin(T &a, const T &b) noexcept { if (b < a) a = b; } template void chmax(T &a, const T &b) noexcept { if (a < b) a = b; } template class rec_lambda { F f; public: rec_lambda(F &&f_) : f(std::forward(f_)) {} template auto operator()(Args &&... args) const { return f(*this, std::forward(args)...); } }; template T scan() { T ret; std::cin >> ret; return ret; } constexpr char eoln = '\n'; i64 floor_div(const i64 n, const i64 d) { assert(d != 0); return n / d - static_cast((n ^ d) < 0 && n % d != 0); } i64 ceil_div(const i64 n, const i64 d) { assert(d != 0); return n / d + static_cast((n ^ d) >= 0 && n % d != 0); } #ifdef N91_LOCAL #define OJ_LOCAL(a, b) b #else #define OJ_LOCAL(a, b) a #endif } // namespace n91 #include namespace n91 { void main_() { using mint = atcoder::modint; const usize h = scan(); const usize w = scan(); const u32 m = scan(); mint::set_mod(m); if (w == 1) { std::cout << 1 << eoln; return; } if (h % 2 == 1) { std::cout << 0 << eoln; return; } std::vector dp(w, 1); for (const usize loop : rep(0, h / 2)) { if (loop != 0) { std::vector tp(w, 0); for (const usize i : rep(0, w)) { if (i != 0) { tp[i - 1] += dp[i]; } tp[i] += dp[i]; if (i + 1 != w) { tp[i + 1] += dp[i]; } } dp = tp; } std::vector next(w, 0); for (const usize t : rep(0, w)) { for (const usize u : rep(0, w)) { if (t == u) { if (w % 2 == 1 && (t == 0 || t + 1 == w)) { next[u] += dp[t]; } } else if (t < u) { if (t % 2 == 0 && (w - 1 - u) % 2 == 0) { next[u] += dp[t]; } } else { if (u % 2 == 0 && (w - 1 - t) % 2 == 0) { next[u] += dp[t]; } } } } dp = next; } std::cout << std::accumulate(dp.begin(), dp.end(), mint(0)).val() << eoln; } } // namespace n91 int main() { //* std::ios::sync_with_stdio(false); std::cin.tie(nullptr); //*/ std::cout << std::fixed << std::setprecision(20); n91::main_(); return 0; }