#include "bits/stdc++.h" //#include //#include //#include //#include //#include using namespace std; using ll = long long; using ld = long double; using P = pair; #define rep(i, n) for (int i = 0; i < (n); i++) #define rep2(i, x, n) for (int i = x; i < (n); i++) #define all(n) begin(n), end(n) struct cww { cww() { ios::sync_with_stdio(false); cin.tie(0); } } star; const long long INF = numeric_limits::max(); void Main() { int n; cin >> n; cout << n - 1 << endl; } int main() { std::cin.tie(nullptr); std::ios_base::sync_with_stdio(false); std::cout << std::fixed << std::setprecision(15); Main(); return 0; }