# your code goes here
def extract_args(expr):
    paren = 0
    start = 0
    ret = []
    for i, c in enumerate(expr):
        if c=='(':
            paren+=1
            if paren==1:
                start=i+1
        elif c==')':
            if paren==1 and start:
                ret.append(expr[start:i]) 
            paren-=1
        elif c==',' and paren==1:
            ret.append(expr[start:i])
            start=i+1
    return ret
 
a="""Fxfu(x1,Y,n<X+Y)
Fxfu(x1,Y(n,A,B),Z(n,A,B)+M(n,A,B)<n)
Fxfu(x1,Y(n),Z(n)^M(n)<X+Y)
Fxfu(x1,(n,A,B),Z(n)^M(n)<T(n,A,B))"""
for l in a.split('\n'):
    print repr(extract_args(l)) 

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