#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ char n[1000001],a; scanf("%s",n); for(int a=0;n[a]!='\0';a++){ if(n[a]>='0'&&n[a]<='9') continue; else cout<<n[a]; } cout<<endl; return 0; }