####
# Python2.7
####
fact = [1]
i = 1
while i < 301 :
n = fact[i-1] * i
fact.append( n )
i += 1
n , w , t , r = ( int(x) for x in raw_input().split() )
ans = fact[n] / ( fact[w] * fact[t] * fact[r] )
ans = ans % 1000000007
print ans
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