R=range
B=10
P=[B**j for j in R(6)]
A=[]
for i in R(6):
	a=int(input())
	A+=[[a//P[j]%B for j in R(6)]]
S=[0]*B**6
t=0
for a in R(B):
	for b in R(B):
		for c in R(B):
			for d in R(B):
				for e in R(B):
					for f in R(B):S[t],t=1,sum((t//P[j]+A[5][j])%B*P[j]for j in R(6))
					t=sum((t//P[j]+A[4][j])%B*P[j]for j in R(6))
				t=sum((t//P[j]+A[3][j])%B*P[j]for j in R(6))
			t=sum((t//P[j]+A[2][j])%B*P[j]for j in R(6))
		t=sum((t//P[j]+A[1][j])%B*P[j]for j in R(6))
	t=sum((t//P[j]+A[0][j])%B*P[j]for j in R(6))
print(sum(S))