← 返回 netflix 的题目列表Check If a List Contains Duplicates
类型：online_judge
Problem: Check if a List Contains Duplicates
Given a list of show names shows (array of strings), determine whether there exists at least one duplicate show name.
Input Format
Line 1: integer N
Line 2: N space-separated show names
Output Format
Print true or false
Constraints
0 <= N <= 2e5
Sample Tests
Test 1 Input:
5
A B C D A
Output:
true
Test 2 Input:
4
A B C D
Output:
false
Test 3 Input:
0
Output:
false
Test 4 Input:
1
X
Output:
false
Test 5 Input:
6
A A A A A A
Output:
true
Example
Input
5
A B C D A
Output
true