#include using namespace std; using ll = long long; #define rep(i, s, t) for (ll i = (ll)s; i < (ll)(t); i++) #define rrep(i, s, t) for (ll i = (ll)(t) - 1; i >= (ll)(s); i--) #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) #define TT template template bool chmin(T1& x, T2 y) { return x > y ? (x = y, true) : false; } template bool chmax(T1& x, T2 y) { return x < y ? (x = y, true) : false; } struct io_setup { io_setup() { ios::sync_with_stdio(false); std::cin.tie(nullptr); cout << fixed << setprecision(15); srand(time(NULL)); } } io_setup; void solve() { ll N; cin >> N; auto f = [&](ll x, ll y) -> ll { ll ret = 1; while (y > 0) { if (y & 1) ret *= x; x *= x; y >>= 1; } return ret; }; vector> ans; rep(E, 1, 41) { if (E == 1) { for (ll x = 1; x * x <= 2 * N; x++) { if ((2 * N) % x != 0) continue; ll a = x, b = 2 * N / x; if ((a + b) % 2 == 0) continue; ll r = (a + b - 1) / 2, l = b - r; assert(l <= r); if (0 < l) ans.push_back({E, l, r}); } } else { set se; ll sum = 0; map mp; for (ll i = 0;; i++) { ll s = f(i, E); if (s > N) break; sum += s; mp[sum] = i; se.insert(sum); } for (auto x : se) { if (se.count(x - N)) { ans.push_back({E, mp[x - N] + 1, mp[x]}); } } } sort(all(ans)); } cout << (int)ans.size() << endl; for (auto [e, l, r] : ans) cout << e << " " << l << " " << r << endl; } int main() { solve(); }