T=[i for i in range(8)]
for i in range(8):
             print("T[",i,"]= ",end="")
             T[i]=int(input())
print("Tableau avant permutation")
print(T)
k=7
for i in range(4):
             X=T[i]
             T[i]=T[k]
             T[k]=X
             k=k-1
print("Tableau après permutation")
print(T)