public static int atMostSum ( int arr [ ] , int n , int k ) {
  int sum = 0 ;
  int cnt = 0 , maxcnt = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    if ( ( sum + arr [ i ] ) <= k ) {
      sum += arr [ i ] ;
      cnt ++ ;
    }
    else if ( sum != 0 ) {
      sum = sum - arr [ i - cnt ] + arr [ i ] ;
    }
    maxcnt = Math . max ( cnt , maxcnt ) ;
  }
  return maxcnt ;
}

public static int atMostSum ( int arr [ ] , int n , int k ) { int sum = 0 ; int cnt = 0 , maxcnt = 0 ; for ( int i = 0 ; i < n ; i ++ ) { if ( ( sum + arr [ i ] ) <= k ) { sum += arr [ i ] ; cnt ++ ; } else if ( sum != 0 ) { sum = sum - arr [ i - cnt ] + arr [ i ] ; } maxcnt = Math . max ( cnt , maxcnt ) ; } return maxcnt ; }
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