#include #define rep(i,a,b) for(int i=a;i=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() //#pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; templatebool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; } templatebool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; } //--------------------------------------------------------------------------------------------------- /*---------------------------------------------------------------------------------------------------             ∧_∧       ∧_∧  (´<_` )  Welcome to My Coding Space!      ( ´_ゝ`) /  ⌒i @hamayanhamayan0     /   \    | |     /   / ̄ ̄ ̄ ̄/  |   __(__ニつ/  _/ .| .|____      \/____/ (u ⊃ ---------------------------------------------------------------------------------------------------*/ int X; int rest[2010101]; map ep[2010101]; int d[2010101]; //--------------------------------------------------------------------------------------------------- void _main() { cin >> X; rep(i, 1, X + 1) rest[i] = i; rep(i, 1, X + 1) d[i] = 1; rep(p, 2, X + 1) for (int x = p; x <= X; x += p) if(rest[x] % p == 0) { int cnt = 0; while (rest[x] % p == 0) rest[x] /= p, cnt++; d[x] *= cnt + 1; } int mi = inf; rep(a, 1, X) { int fa = a - d[a]; int fb = X - a - d[X - a]; chmin(mi, abs(fa - fb)); } rep(a, 1, X) { int fa = a - d[a]; int fb = X - a - d[X - a]; if (mi == abs(fa - fb)) { printf("%d %d\n", a, X - a); } } }