import std.conv, std.functional, std.range, std.stdio, std.string; import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons; import core.bitop; class EOFException : Throwable { this() { super("EOF"); } } string[] tokens; string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; } int readInt() { return readToken.to!int; } long readLong() { return readToken.to!long; } real readReal() { return readToken.to!real; } bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } } bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } } int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; } int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); } int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); } uint xrand() { static uint x = 314159265, y = 358979323, z = 846264338, w = 327950288; uint t = x ^ x << 11; x = y; y = z; z = w; return w = w ^ w >> 19 ^ t ^ t >> 8; } BigInt power(BigInt a, BigInt e, BigInt m) { BigInt x = a % m, y = 1 % m; for (; e > 0; e >>= 1) { if (e & 1) y = (y * x) % m; x = (x * x) % m; } return y; } BigInt N; BigInt Ask(BigInt a) { debug { assert(0 < a); assert(a < N); assert(gcd(a, N) == 1); BigInt aa = 1; for (long r = 1; ; ++r) { aa = (aa * a) % N; if (aa == 1) { writefln("Ask %s = %s", a, r); stdout.flush; return BigInt(r); } } } else { writefln("? %s", a); stdout.flush; const res = BigInt(readToken()); return res; } } void Answer(BigInt p, BigInt q) { writefln("! %s %s", p, q); stdout.flush; debug { assert(p > 1); assert(q > 1); assert(p * q == N); } import core.stdc.stdlib; exit(0); } void main() { N = BigInt(readToken()); for (; ; ) { BigInt a; for (; a < N; ) { a = a << 32 | xrand(); } a %= N; if (a == 0) { continue; } { const d = gcd(a, N); if (d != 1) { Answer(d, N / d); } } const r = Ask(a); if (r % 2 == 0) { const b = power(a, r / 2, N); if (b != 1) { foreach (c; [b + 1, b - 1]) { const d = gcd(c, N); if (d != 1) { Answer(d, N / d); } } } } } }