in1=open("in20_3.txt","r+")
output=open("out23_20_3.txt","w+")
def involution(list):
    length=len(list)
    inv=[0]*length
    for i in range(length):
        inv[list[i]-1]=i+1
    return inv==list
        
count=0
list1=[]
list2=[]
for row in input:
    if count==0:
        list=row.split(",")
        for i in list:
            list1.append(int(i))
    else:
        list=row.split(",")
        for i in list:
            list2.append(int(i))
    count+=1
boolean=involution(list2)
if boolean==True:
    output.write("This permutation is Involution")
else:
    output.write("This permutation is Not Involution")
in1.close()
output.close()