Algorithms and Data Structures

  • Profound Academy

    • Status
      • 1
        Implementation
      • 2
        Bitwise operations
      • 3
        Prefix Sums
      • 4
        Sliding window / Two pointers
      • 5
        Modular Arithmetic
      • 6
        Number Theory
      • 7
        Binary Search
      • 8
        Basic Sorting
      • 9
        Greedy Algorithms
      • 10
        Basic Dynamic Programming
      • 11
        Recursion
      • 12
        Linked LIst
      • 13
        Queue & Stack
      • 14
        Binary tree + BST
      • 15
        Divide & Conquer + Advanced Sorting
      • 16
        Heap
      • 17
        Hashing
      • 18
        Graph Representation
      • 19
        BFS

    • Distinct elements

    Given an array of n integers, you are asked to calculate the number of distinct elements.

    Input

    The first line of the input contains a single integer n (1 ≤ n ≤ ).
    The next line contains n space-separated integers ( ≤ ≤ ).

    Output

    The program should print the number of distinct elements in the given array.

    Examples

    Input
    Output
    5 5 5 3 2 3
    3

    Explanation

    Distinct elements are 2, 3, and 5
     

    Constraints

    Time limit: 1 seconds

    Memory limit: 512 MB

    Output limit: 1 MB

    To check your solution you need to sign in
    Sign in to continue