from itertools import combinations n = int(input()); m = int(i | OFF CAMPUS UPDATES

from itertools import combinations
n = int(input());
m = int(input());
p = int(input());
e = int(input());
comb1 = combinations(range(0,n), p);
comb2 = combinations(range(0,m), e);
temp = len(list(comb1)) * len(list(comb2));
print(temp);


Sationary code