#include #include #include #include using namespace std; using ll = long long; #define TYPE_OF( VAR ) remove_const::type >::type #define CIN( LL , A ) LL A; cin >> A #define ASSERT( A , MIN , MAX ) assert( MIN <= A && A <= MAX ) #define CIN_ASSERT( A , MIN , MAX ) CIN( TYPE_OF( MAX ) , A ); ASSERT( A , MIN , MAX ) #define QUIT return 0 #define RETURN( ANSWER ) cout << ( ANSWER ) << "\n"; QUIT #include #define MAIN main int MAIN() { constexpr const ll bound_N = 1000; CIN_ASSERT( N , - bound_N , bound_N ); constexpr const int bound_c = 50; int c = 0; int line = 2; while( c++ < bound_c ){ if( line == 2 ){ line = ( N == 1 ? 4 : line + 1 ); } else if( line == 4 ){ break; } else if( line == 3 ){ N = ( N % 2 == 0 ? N / 2 : 3 * N + 1 ); line = 2; } } if( c <= bound_c ){ cout << "Yes\n"; RETURN( c ); } RETURN( "No" ); }