#include<bits/stdc++.h> using namespace std; int main(){ char ch[100000]; cin>>ch; int n=0; while(ch[n]!='\0'){ n++; if(ch[n]>=48 and ch[n]<=57){ ch[n]='0'; } } for(int i=0;i<=n;i++){ if(ch[i]!='0'){ cout<<ch[i]; } } }