#include <iostream> #include <string> using namespace std; int main() { string s; cin >> s; string res = ""; 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++) res += c; i++; }else{ res+=s[i]; } } cout<<res<<endl; return 0; }