public static void main ( String [ ] args ) throws IOException {
  BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  StringTokenizer st = new StringTokenizer ( br . readLine ( ) ) ;
  int n = Integer . parseInt ( st . nextToken ( ) ) ;
  int t = Integer . parseInt ( st . nextToken ( ) ) ;
  st = new StringTokenizer ( br . readLine ( ) ) ;
  int [ ] books = new int [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    books [ i ] = Integer . parseInt ( st . nextToken ( ) ) ;
  }
  br . close ( ) ;
  int [ ] booksPrefixSum = new int [ n + 1 ] ;
  for ( int i = 1 ;
  i <= n ;
  i ++ ) {
    booksPrefixSum [ i ] = booksPrefixSum [ i - 1 ] + books [ i - 1 ] ;
  }
  TreeSet < TimeIndexPair > booksPrefixSet = new TreeSet < TimeIndexPair > ( ) ;
  for ( int i = 1 ;
  i <= n ;
  i ++ ) {
    booksPrefixSet . add ( new TimeIndexPair ( booksPrefixSum [ i ] , i ) ) ;
  }
  int [ ] candidates = new int [ n ] ;
  for ( int i = 0 ;
  i <= n - 1 ;
  i ++ ) {
    int currTime = booksPrefixSum [ i ] ;
    TimeIndexPair optimal = new TimeIndexPair ( currTime + t , 0 ) ;
    TimeIndexPair best = booksPrefixSet . floor ( optimal ) ;
    if ( best != null ) {
      candidates [ i ] = best . index - i ;
    }
  }
  int max = Integer . MIN_VALUE ;
  for ( int i = 0 ;
  i < candidates . length ;
  i ++ ) {
    max = Math . max ( candidates [ i ] , max ) ;
  }
  System . out . println ( max ) ;
}

public static void main ( String [ ] args ) throws IOException { BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ; StringTokenizer st = new StringTokenizer ( br . readLine ( ) ) ; int n = Integer . parseInt ( st . nextToken ( ) ) ; int t = Integer . parseInt ( st . nextToken ( ) ) ; st = new StringTokenizer ( br . readLine ( ) ) ; int [ ] books = new int [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { books [ i ] = Integer . parseInt ( st . nextToken ( ) ) ; } br . close ( ) ; int [ ] booksPrefixSum = new int [ n + 1 ] ; for ( int i = 1 ; i <= n ; i ++ ) { booksPrefixSum [ i ] = booksPrefixSum [ i - 1 ] + books [ i - 1 ] ; } TreeSet < TimeIndexPair > booksPrefixSet = new TreeSet < TimeIndexPair > ( ) ; for ( int i = 1 ; i <= n ; i ++ ) { booksPrefixSet . add ( new TimeIndexPair ( booksPrefixSum [ i ] , i ) ) ; } int [ ] candidates = new int [ n ] ; for ( int i = 0 ; i <= n - 1 ; i ++ ) { int currTime = booksPrefixSum [ i ] ; TimeIndexPair optimal = new TimeIndexPair ( currTime + t , 0 ) ; TimeIndexPair best = booksPrefixSet . floor ( optimal ) ; if ( best != null ) { candidates [ i ] = best . index - i ; } } int max = Integer . MIN_VALUE ; for ( int i = 0 ; i < candidates . length ; i ++ ) { max = Math . max ( candidates [ i ] , max ) ; } System . out . println ( max ) ; }
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