// #define _GLIBCXX_DEBUG #include using namespace std; #define int long long #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() #define rep(i, n) for (int i = 0; i < n; ++i) #define REP(i, n) for (int i = 0; i < n; ++i) #define range(i,a,b) ((a)<=(i) && (i)<(b)) #define debug(x) cout << #x << ' ' << '=' << ' ' << (x) << endl; #define fs first #define sc second #define pb push_back #define eb emplace_back typedef long long ll; typedef pair P; typedef tuple T; typedef vector vec; typedef vector

pvec; typedef vector> vvec; typedef vector> pvvec; typedef priority_queue PQI; typedef priority_queue

PQP; typedef priority_queue,greater> PQIG; typedef priority_queue,greater

> PQPG; const vector dx = {0, -1, 0, 1, 1, 1, -1, -1}; const vector dy = {1, 0, -1, 0, 1, -1, 1, -1}; const int MOD = (1000000007); // const int MOD = (998244353); // const int INF = (1 << 30); const int INF = (1LL << 60); const double EPS = (1 >> 30); template inline bool chmin(T& a, T b) {if (a > b) {a = b; return 1;} return 0;} template inline bool chmax(T& a, T b) {if (a < b) {a = b; return 1;} return 0;} int divi(const int n){ vector ret; for(int i=1;i*i<=n;i++){ if(n % i == 0){ ret.push_back(i); if(i*i!= n) ret.push_back(n/i); } } sort(ret.begin(),ret.end()); return ret.size(); } signed main() { ios::sync_with_stdio(false); cin.tie(0); cout << fixed << setprecision(15); //--------------------------------------------- int x; cin>>x; vector c; for(int i=max(x/2-10000,0LL);i<=x/2+10000;i++){ int a=divi(i); int b=divi(x-i); if(range(i,0,x)&&range(x-i,0,x)){ c.pb(T(abs(i-(x-i)-a+b),i,x-i)); } } sort(all(c)); rep(i,10000){ int f,g,h; tie(f,g,h)=c[i]; cout<(c[i])!=get<0>(c[i+1])) break; } }