#include<bits/stdc++.h> using namespace std; int main() { string s,a=""; cin>>s; int l=s.size(); for(int i=0;i<l;i++){ if(s[i]>='0'&&s[i]<='9'){ int cnt=s[i]-'0'; while(i+1<l&&s[i+1]>='0'&&s[i+1]<='9'){ cnt=cnt*10+(s[i+1]-'0'); i++; } char c=s[i+1]; for(int j=0;j<cnt;j++){ a+=c; i++; } }else{ a+=s[i]; } } cout<<a<<endl; return 0; }