obs = [5,258,19,254,29,206,85,170]
exp = [(263*138)/1026, (888*263)/1026, (138*273)/1026, (888*273)/1026, (138*235)/1026, (888*235)/1026, (138*255)/1026, (888*255)/1026]

ans = 0

for i in range(0,8):
    ans = ans + ((obs[i]-exp[i])**2)/(exp[i])

print(ans)
