static int maxPeople ( int p ) {
  int tmp = 0 , count = 0 ;
  for ( int i = 1 ;
  i * i <= p ;
  i ++ ) {
    tmp = tmp + ( i * i ) ;
    if ( tmp <= p ) count ++ ;
    else break ;
  }
  return count ;
}

static int maxPeople ( int p ) { int tmp = 0 , count = 0 ; for ( int i = 1 ; i * i <= p ; i ++ ) { tmp = tmp + ( i * i ) ; if ( tmp <= p ) count ++ ; else break ; } return count ; }
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