str2int = {"zero":0,"one": 1, "two": 2, "three": 3, "four": 4, "five": 5, "six": 6, "seven": 7, "eight": 8, "nine": 9}
while True:
try:
intput_str = input()
str_list = intput_str.split(" ")
trans_list = []
for item in str_list:
if item in str2int:
trans_list.append(str2int[item])
else:
trans_list.append(item)
temp_str = ""
result_list = []
for item in trans_list:
if item != "+" and item != "=":
temp_str = temp_str + str(item)
else:
result_list.append(int(temp_str))
temp_str = ""
value=result_list[0] + result_list[1]
if value==0:
break
print("{:d}".format(value), end="\n")
except EOFError:
break