#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; template struct ModInt { int x; ModInt() : x(0) {} ModInt(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} ModInt &operator+=(const ModInt &p) { if ((x += p.x) >= mod) x -= mod; return *this; } ModInt &operator-=(const ModInt &p) { if ((x += mod - p.x) >= mod) x -= mod; return *this; } ModInt &operator*=(const ModInt &p) { x = (int)(1LL * x * p.x % mod); return *this; } ModInt &operator/=(const ModInt &p) { *this *= p.inverse(); return *this; } ModInt &operator^=(long long p) { // quick_pow here:3 ModInt res = 1; for (; p; p >>= 1) { if (p & 1) res *= *this; *this *= *this; } return *this = res; } ModInt operator-() const { return ModInt(-x); } ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; } ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; } ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; } ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; } ModInt operator^(long long p) const { return ModInt(*this) ^= p; } bool operator==(const ModInt &p) const { return x == p.x; } bool operator!=(const ModInt &p) const { return x != p.x; } explicit operator int() const { return x; } // added by QCFium ModInt operator=(const int p) { x = p; return ModInt(*this); } // added by QCFium ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while (b > 0) { t = a / b; a -= t * b; std::swap(a, b); u -= t * v; std::swap(u, v); } return ModInt(u); } friend std::ostream &operator<<(std::ostream &os, const ModInt &p) { return os << p.x; } friend std::istream &operator>>(std::istream &is, ModInt &a) { long long x; is >> x; a = ModInt(x); return (is); } }; template struct SegmentTree { using Monoid = typename T::Monoid; explicit SegmentTree(int n) : SegmentTree(std::vector(n, T::id())) {} explicit SegmentTree(const std::vector &a) : n(a.size()), sz(1) { while (sz < n) sz <<= 1; data.assign(sz << 1, T::id()); std::copy(a.begin(), a.end(), data.begin() + sz); for (int i = sz - 1; i > 0; --i) { data[i] = T::merge(data[i << 1], data[(i << 1) + 1]); } } void set(int idx, const Monoid val) { idx += sz; data[idx] = val; while (idx >>= 1) data[idx] = T::merge(data[idx << 1], data[(idx << 1) + 1]); } Monoid get(int left, int right) const { Monoid res_l = T::id(), res_r = T::id(); for (left += sz, right += sz; left < right; left >>= 1, right >>= 1) { if (left & 1) res_l = T::merge(res_l, data[left++]); if (right & 1) res_r = T::merge(data[--right], res_r); } return T::merge(res_l, res_r); } Monoid operator[](const int idx) const { return data[idx + sz]; } private: const int n; int sz; // sz + 原数组坐标 = 线段树里的编号,1 based std::vector data; }; namespace monoid { template struct RangeMinimumQuery { using Monoid = T; static constexpr Monoid id() { return std::numeric_limits::max(); } static Monoid merge(const Monoid &a, const Monoid &b) { return std::min(a, b); } }; template struct RangeMaximumQuery { using Monoid = T; static constexpr Monoid id() { return std::numeric_limits::lowest(); } static Monoid merge(const Monoid &a, const Monoid &b) { return std::max(a, b); } }; template struct RangeSumQuery { using Monoid = T; static constexpr Monoid id() { return 0; } static Monoid merge(const Monoid &a, const Monoid &b) { return a + b; } }; } // namespace monoid template struct DSU { std::vector f, siz; DSU(int n) : f(n), siz(n, 1) { std::iota(f.begin(), f.end(), 0); } T leader(T x) { while (x != f[x]) x = f[x] = f[f[x]]; return x; } bool same(T x, T y) { return leader(x) == leader(y); } bool merge(T x, T y) { x = leader(x); y = leader(y); if (x == y) return false; siz[x] += siz[y]; f[y] = x; return true; } T size(int x) { return siz[leader(x)]; } }; void solve() { long long n; std::cin >> n; std::string ans; // 7, 20 , 10, 5, 14, 7 while (n != 1) { if (n % 2 == 0) { n = n / 2; ans += '/'; } else { if (n % 4 == 3) { n = n * 3 - 1; ans += '-'; } else { assert(n % 4 == 1); n = n * 3 + 1; ans += '+'; } } } std::cout << ans.size() << '\n' << ans << '\n'; } int main() { std::ios::sync_with_stdio(false); std::cin.tie(nullptr); int t = 1; while (t--) solve(); return 0; }