// #pragma GCC target("avx2") // #pragma GCC optimize("O3") // #pragma GCC optimize("unroll-loops") // #define INTERACTIVE #include using namespace std; namespace templates { // type using ll = long long; using ull = unsigned long long; using Pii = pair; using Pil = pair; using Pli = pair; using Pll = pair; template using pq = priority_queue; template using qp = priority_queue, greater>; // clang-format off #define vec(T, A, ...) vector A(__VA_ARGS__); #define vvec(T, A, h, ...) vector> A(h, vector(__VA_ARGS__)); #define vvvec(T, A, h1, h2, ...) vector>> A(h1, vector>(h2, vector(__VA_ARGS__))); // clang-format on // for loop #define fori1(a) for (ll _ = 0; _ < (a); _++) #define fori2(i, a) for (ll i = 0; i < (a); i++) #define fori3(i, a, b) for (ll i = (a); i < (b); i++) #define fori4(i, a, b, c) for (ll i = (a); ((c) > 0 || i > (b)) && ((c) < 0 || i < (b)); i += (c)) #define overload4(a, b, c, d, e, ...) e #define fori(...) overload4(__VA_ARGS__, fori4, fori3, fori2, fori1)(__VA_ARGS__) // declare and input // clang-format off #define INT(...) int __VA_ARGS__; inp(__VA_ARGS__); #define LL(...) ll __VA_ARGS__; inp(__VA_ARGS__); #define STRING(...) string __VA_ARGS__; inp(__VA_ARGS__); #define CHAR(...) char __VA_ARGS__; inp(__VA_ARGS__); #define DOUBLE(...) double __VA_ARGS__; STRING(str___); __VA_ARGS__ = stod(str___); #define VEC(T, A, n) vector A(n); inp(A); #define VVEC(T, A, n, m) vector> A(n, vector(m)); inp(A); // clang-format on // const value const ll MOD1 = 1000000007; const ll MOD9 = 998244353; const double PI = acos(-1); // other macro #if !defined(RIN__LOCAL) && !defined(INTERACTIVE) #define endl "\n" #endif #define spa ' ' #define len(A) ll(A.size()) #define all(A) begin(A), end(A) // function vector stoc(string &S) { int n = S.size(); vector ret(n); for (int i = 0; i < n; i++) ret[i] = S[i]; return ret; } string ctos(vector &S) { int n = S.size(); string ret = ""; for (int i = 0; i < n; i++) ret += S[i]; return ret; } template auto min(const T &a) { return *min_element(all(a)); } template auto max(const T &a) { return *max_element(all(a)); } template auto clamp(T &a, const S &l, const S &r) { return (a > r ? r : a < l ? l : a); } template inline bool chmax(T &a, const S &b) { return (a < b ? a = b, 1 : 0); } template inline bool chmin(T &a, const S &b) { return (a > b ? a = b, 1 : 0); } template inline bool chclamp(T &a, const S &l, const S &r) { auto b = clamp(a, l, r); return (a != b ? a = b, 1 : 0); } template T sum(vector &A) { T tot = 0; for (auto a : A) tot += a; return tot; } template vector compression(vector X) { sort(all(X)); X.erase(unique(all(X)), X.end()); return X; } // input and output namespace io { // __int128_t std::istream &operator>>(std::istream &is, __int128_t &value) { std::string str; is >> str; value = 0; int sign = 1; for (size_t i = 0; i < str.size(); i++) { if (i == 0 && str[i] == '-') { sign = -1; continue; } value = value * 10 + str[i] - '0'; } value *= sign; return is; } std::ostream &operator<<(std::ostream &dest, __int128_t value) { std::ostream::sentry s(dest); if (s) { __uint128_t tmp = value < 0 ? -value : value; char buffer[128]; char *d = std::end(buffer); do { --d; *d = "0123456789"[tmp % 10]; tmp /= 10; } while (tmp != 0); if (value < 0) { --d; *d = '-'; } int len = std::end(buffer) - d; if (dest.rdbuf()->sputn(d, len) != len) { dest.setstate(std::ios_base::badbit); } } return dest; } // vector template istream &operator>>(istream &is, vector &A) { for (auto &a : A) is >> a; return is; } template ostream &operator<<(ostream &os, vector &A) { for (size_t i = 0; i < A.size(); i++) { os << A[i]; if (i != A.size() - 1) os << ' '; } return os; } // vector> template istream &operator>>(istream &is, vector> &A) { for (auto &a : A) is >> a; return is; } template ostream &operator<<(ostream &os, vector> &A) { for (size_t i = 0; i < A.size(); i++) { os << A[i]; if (i != A.size() - 1) os << endl; } return os; } // pair template istream &operator>>(istream &is, pair &A) { is >> A.first >> A.second; return is; } template ostream &operator<<(ostream &os, pair &A) { os << A.first << ' ' << A.second; return os; } // vector> template istream &operator>>(istream &is, vector> &A) { for (size_t i = 0; i < A.size(); i++) { is >> A[i]; } return is; } template ostream &operator<<(ostream &os, vector> &A) { for (size_t i = 0; i < A.size(); i++) { os << A[i]; if (i != A.size() - 1) os << endl; } return os; } // tuple template struct TuplePrint { static ostream &print(ostream &os, const T &t) { TuplePrint::print(os, t); os << ' ' << get(t); return os; } }; template struct TuplePrint { static ostream &print(ostream &os, const T &t) { os << get<0>(t); return os; } }; template ostream &operator<<(ostream &os, const tuple &t) { TuplePrint::print(os, t); return os; } // io functions void FLUSH() { cout << flush; } void print() { cout << endl; } template void print(Head &&head, Tail &&...tail) { cout << head; if (sizeof...(Tail)) cout << spa; print(std::forward(tail)...); } template void prisep(vector &A, S sep) { int n = A.size(); for (int i = 0; i < n; i++) { cout << A[i]; if (i != n - 1) cout << sep; } cout << endl; } template void priend(T A, S end) { cout << A << end; } template void prispa(T A) { priend(A, spa); } template bool printif(bool f, T A, S B) { if (f) print(A); else print(B); return f; } template void inp(T &...a) { (cin >> ... >> a); } } // namespace io using namespace io; // read graph vector> read_edges(int n, int m, bool direct = false, int indexed = 1) { vector> edges(n, vector()); for (int i = 0; i < m; i++) { INT(u, v); u -= indexed; v -= indexed; edges[u].push_back(v); if (!direct) edges[v].push_back(u); } return edges; } vector> read_tree(int n, int indexed = 1) { return read_edges(n, n - 1, false, indexed); } template vector>> read_wedges(int n, int m, bool direct = false, int indexed = 1) { vector>> edges(n, vector>()); for (int i = 0; i < m; i++) { INT(u, v); T w; inp(w); u -= indexed; v -= indexed; edges[u].push_back({v, w}); if (!direct) edges[v].push_back({u, w}); } return edges; } template vector>> read_wtree(int n, int indexed = 1) { return read_wedges(n, n - 1, false, indexed); } // yes / no namespace yesno { // yes inline bool yes(bool f = true) { cout << (f ? "yes" : "no") << endl; return f; } inline bool Yes(bool f = true) { cout << (f ? "Yes" : "No") << endl; return f; } inline bool YES(bool f = true) { cout << (f ? "YES" : "NO") << endl; return f; } // no inline bool no(bool f = true) { cout << (!f ? "yes" : "no") << endl; return f; } inline bool No(bool f = true) { cout << (!f ? "Yes" : "No") << endl; return f; } inline bool NO(bool f = true) { cout << (!f ? "YES" : "NO") << endl; return f; } // possible inline bool possible(bool f = true) { cout << (f ? "possible" : "impossible") << endl; return f; } inline bool Possible(bool f = true) { cout << (f ? "Possible" : "Impossible") << endl; return f; } inline bool POSSIBLE(bool f = true) { cout << (f ? "POSSIBLE" : "IMPOSSIBLE") << endl; return f; } // impossible inline bool impossible(bool f = true) { cout << (!f ? "possible" : "impossible") << endl; return f; } inline bool Impossible(bool f = true) { cout << (!f ? "Possible" : "Impossible") << endl; return f; } inline bool IMPOSSIBLE(bool f = true) { cout << (!f ? "POSSIBLE" : "IMPOSSIBLE") << endl; return f; } // Alice Bob inline bool Alice(bool f = true) { cout << (f ? "Alice" : "Bob") << endl; return f; } inline bool Bob(bool f = true) { cout << (f ? "Bob" : "Alice") << endl; return f; } // Takahashi Aoki inline bool Takahashi(bool f = true) { cout << (f ? "Takahashi" : "Aoki") << endl; return f; } inline bool Aoki(bool f = true) { cout << (f ? "Aoki" : "Takahashi") << endl; return f; } } // namespace yesno using namespace yesno; } // namespace templates using namespace templates; void solve() { LL(n); auto S = to_string(n); reverse(all(S)); map mp; __int128_t ten = 1; fori(14) ten *= 10; string z14 = string(14, '0'); __int128_t prod = 1; int cnt = 0; while (1) { fori(t, 1, 10) { auto S_ = to_string(n * t); reverse(all(S_)); auto m_ = stoll(S_); __int128_t x = (prod * m_) % n; if (mp.count((n - x) % n)) { auto [c2, t2] = mp[(n - x) % n]; using P = pair; vector

ans; { string T_ = to_string(n * t); reverse(all(T_)); // while (len(T_) < 14) T_ += '0'; ans.push_back({T_, 1}); } if (cnt - c2 - 1 > 0) ans.push_back({z14, cnt - c2 - 1}); { string T_ = to_string(n * t2); reverse(all(T_)); T_ = string(14 - len(T_), '0') + T_; ans.push_back({T_, 1}); } if (c2 > 0) ans.push_back({z14, c2}); int le = len(ans); fori(i, le - 1, -1, -1) { ans.push_back(ans[i]); reverse(all(ans.back().first)); } print(len(ans)); print(ans); #ifdef RIN__LOCAL print(n); #endif return; } } fori(t, 1, 10) { auto S_ = to_string(n * t); reverse(all(S_)); auto m_ = stoll(S_); __int128_t x = (prod * m_) % n; mp[x] = {cnt, t}; } cnt++; prod = (prod * ten) % n; } } int main() { #ifndef INTERACTIVE std::cin.tie(0)->sync_with_stdio(0); #endif // std::cout << std::fixed << std::setprecision(12); int t; t = 1; // std::cin >> t; while (t--) solve(); return 0; } // // #pragma GCC target("avx2") // // #pragma GCC optimize("O3") // // #pragma GCC optimize("unroll-loops") // // #define INTERACTIVE // // #include "kyopro-cpp/template.hpp" // // void solve() { // LL(n); // auto S = to_string(n); // reverse(all(S)); // map mp; // __int128_t ten = 1; // fori(14) ten *= 10; // string z14 = string(14, '0'); // __int128_t prod = 1; // // int cnt = 0; // while (1) { // fori(t, 1, 10) { // auto S_ = to_string(n * t); // reverse(all(S_)); // auto m_ = stoll(S_); // __int128_t x = (prod * m_) % n; // if (mp.count((n - x) % n)) { // auto [c2, t2] = mp[(n - x) % n]; // // using P = pair; // vector

ans; // { // string T_ = to_string(n * t); // reverse(all(T_)); // // while (len(T_) < 14) T_ += '0'; // ans.push_back({T_, 1}); // } // if (cnt - c2 - 1 > 0) ans.push_back({z14, cnt - c2 - 1}); // { // string T_ = to_string(n * t2); // reverse(all(T_)); // T_ = string(14 - len(T_), '0') + T_; // ans.push_back({T_, 1}); // } // if (c2 > 0) ans.push_back({z14, c2}); // // int le = len(ans); // fori(i, le - 1, -1, -1) { // ans.push_back(ans[i]); // reverse(all(ans.back().first)); // } // print(len(ans)); // print(ans); // // #ifdef RIN__LOCAL // print(n); // #endif // // return; // } // } // fori(t, 1, 10) { // auto S_ = to_string(n * t); // reverse(all(S_)); // auto m_ = stoll(S_); // __int128_t x = (prod * m_) % n; // mp[x] = {cnt, t}; // } // cnt++; // prod = (prod * ten) % n; // } // } // // int main() { // #ifndef INTERACTIVE // std::cin.tie(0)->sync_with_stdio(0); // #endif // // std::cout << std::fixed << std::setprecision(12); // int t; // t = 1; // // std::cin >> t; // while (t--) solve(); // return 0; // }