online python compiler
Use this site
https://repl.it/languages/python3
                                
                            online python compiler
Use this site
https://repl.it/languages/python3
                                
                            online python compiler
Use repl.it! 
https://repl.it/languages/python3
                                
                            online python compiler
Use Repl.it "Believe me It's Best"
linK: https://repl.it/languages/python3
                                
                            online python compiler
This is the best online compler for python which I've used.
Probably you will find it on the top of your search resluts too.
https://www.programiz.com/python-programming/online-compiler/
                                
                            online python compiler
w3schools has another compiler option
https://www.w3schools.com/python/trypython.asp?filename=demo_compiler
                                
                            python compiler online
from sys import stdin
from collections import deque
def beauty(n,m,s,x,y):
    degree=[0 for i in range(n)]
    graph={i:[] for i in range(n)}
    for i in range(m):
        x[i]-=1
        y[i]-=1
        graph[x[i]].append(y[i])
        degree[y[i]]+=1
    q=deque()
    for i in range(n):
        if degree[i]==0:
            q.append(i)
    count=0
    ans=0
    dp=[[0 for i in range(26)]for i in range(n)]
    while count<n and q:
        a=q.popleft()
        count+=1
        dp[a][ord(s[a])-97]+=1
        for i in graph[a]:
            for j in range(26):
                dp[i][j]=max(dp[i][j],dp[a][j])
            degree[i]-=1
            if degree[i]==0:
                q.append(i)
    if count!=n:
        return -1
    else:
        ans=0
        for i in range(n):
            ans=max(ans,max(dp[i]))
        return ans
                                
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