#include <iostream>
#include <fstream>

using namespace std;

int main () {
  ifstream in("encoding.in");
  char s, o;
  int c;
  bool ncs = false;
  s = in.get();
  o = s;
  while(!in.eof()) {
    c = 1;
    if (o == '\n') {
      s = in.get();
      if(in.eof() && ncs) cout << 1;
      cout << o;
    } else {
      while((s = in.get()) == o) {
        c++;
      }
      if(c > 1) {
        if(ncs) {
          cout << 1;
          ncs = false;
        }
        while(c > 9) {
          cout << 9 << o;
	  c -= 9;
	}
        cout << c << o;
      }
      if(c == 1) {
        if (!ncs) {
	  cout << 1;
	  ncs = true;
        }
        if (o == '1') {
	  cout << 1;
        }
        cout << o;
      }
    }
    o = s;
  }

  return 0;
}