#
# @lc app=leetcode id=20 lang=python3
#
# [20] Valid Parentheses
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# https://leetcode.com/problems/valid-parentheses/description/
#
# algorithms
# Easy (40.54%)
# Likes:    10457
# Dislikes: 417
# Total Accepted:    1.9M
# Total Submissions: 4.6M
# Testcase Example:  '"()"'
#
# Given a string s containing just the characters '(', ')', '{', '}', '[' and
# ']', determine if the input string is valid.
# 
# An input string is valid if:
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# 
# Open brackets must be closed by the same type of brackets.
# Open brackets must be closed in the correct order.
# 
# 
# 
# Example 1:
# 
# 
# Input: s = "()"
# Output: true
# 
# 
# Example 2:
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# 
# Input: s = "()[]{}"
# Output: true
# 
# 
# Example 3:
# 
# 
# Input: s = "(]"
# Output: false
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# 
# 
# Constraints:
# 
# 
# 1 <= s.length <= 10^4
# s consists of parentheses only '()[]{}'.
# 
# 
#

# @lc code=start
class Solution:
    def isValid(self, s: str) -> bool:
        
# @lc code=end

