#include<iostream>//很多人想复杂了,这个题格式都是固定的,直接一个个输入就行了
#include<string>
using namespace std;
int strToNum(string str) {
if (str == "zero") return 0;
else if (str == "one") return 1;
else if (str == "two") return 2;
else if (str == "three") return 3;
else if (str == "four") return 4;
else if (str == "five") return 5;
else if (str == "six") return 6;
else if (str == "seven") return 7;
else if (str == "eight") return 8;
else return 9;
}
int main()
{
string str;
while (cin >> str) {
int a = strToNum(str);
cin >> str;
while (str != "+") {
a *= 10;
a += strToNum(str);
cin >> str;
}
int b = 0;
cin >> str;
while (str != "=") {
b *= 10;
b += strToNum(str);
cin >> str;
}
cout << a + b << endl;
}
}