#include<iostream> using namespace std; int main(){ char a[1000000]; cin>>a; int i=0; while(a[i]!='\0'){ if(a[i]=='0'||a[i]=='1'||a[i]=='2'||a[i]=='3'||a[i]=='4'||a[i]=='5'||a[i]=='6'||a[i]=='7'||a[i]=='8'||a[i]=='9'){ i++; continue; } else{ cout<<a[i]; i++; } } return 0; }