#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;
	}
}