#include <cstdio> using namespace std; //======================================================= // WriteInBinary //======================================================= // WriteInBinary(n) writes out the binary representation // of n. //======================================================= void WriteInBinary(long n) { if(n ≥ 2) { WriteInBinary(n/2); } printf("%ld", n%2); } int main() { long n; scanf("%ld", &n); WriteInBinary(n); return 0; }