int main() {
char s1[128];
char s2[128];
scanf("%s", s1);
scanf("%s", s2);
printf("%s\n", srev(scat(s1, s2)));
return 0;
}
char *convert(size_t key){
size_t t = key;
int i = 0;
while(t){
t = t /10;
i++;
}
char *z = (char*)malloc(i + 1);
i = 0;
while(key){
z[i] = key % 10 + '0';
key = key /10;
i++;
}
z[ i + 1] = '\0';
srev(z);
return z;
}
