static int getValueOfF ( int n ) {
  if ( n == 1 ) return 0 ;
  if ( n == 2 ) return 1 ;
  int cnt = 0 ;
  while ( n % 2 == 0 ) {
    cnt += 1 ;
    n /= 2 ;
  }
  return 2 * cnt ;
}

static int getValueOfF ( int n ) { if ( n == 1 ) return 0 ; if ( n == 2 ) return 1 ; int cnt = 0 ; while ( n % 2 == 0 ) { cnt += 1 ; n /= 2 ; } return 2 * cnt ; }
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