static int findMinCost ( int arr [ ] , int n , int choc_cost ) {
  int choc_buy = arr [ 0 ] ;
  int curr_choc = 0 ;
  for ( int i = 0 ;
  i < n - 1 ;
  i ++ ) {
    int choc = arr [ i ] - arr [ i + 1 ] ;
    curr_choc += choc ;
    if ( curr_choc < 0 ) {
      choc_buy += Math . abs ( curr_choc ) ;
      curr_choc = 0 ;
    }
  }
  return choc_buy * choc_cost ;
}

static int findMinCost ( int arr [ ] , int n , int choc_cost ) { int choc_buy = arr [ 0 ] ; int curr_choc = 0 ; for ( int i = 0 ; i < n - 1 ; i ++ ) { int choc = arr [ i ] - arr [ i + 1 ] ; curr_choc += choc ; if ( curr_choc < 0 ) { choc_buy += Math . abs ( curr_choc ) ; curr_choc = 0 ; } } return choc_buy * choc_cost ; }
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