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#include<stdio.h>
#include<string.h>
char num[10][6]= {"zero","one","two","three","four","five","six","seven","eight","nine"};
int ex(char s[]) {
	for(int i=0; i<10; i++) {
		if(strcmp(s,num[i])==0)
			return i;
	}
}

int main() {
	char s[10];
	while(true) {
		int ta=0,tb=0;
		while(scanf("%s",s),strcmp(s,"+")!=0) {
			ta=ta*10+ex(s);
		}
		while(scanf("%s",s),strcmp(s,"=")!=0) {
			tb=tb*10+ex(s);
		}
		if(ta==0&&tb==0)
			break;
		else
			printf("%d\n",ta+tb);
	}
	return 0;
}