#include <iostream>
using namespace std;
int main() {
int c,p,br;
long n,d,X;
cin >> n;
p=n%10; br=1; X=0; d=1;
while (n>0)
{ n=n/10;
c=n%10;
if (p==c)
br=br+1;
else {
X=X+(br*10+p)*d;
d=d*100;
br=1;
}
p=c;
}
cout << X << endl;
#include <iostream>
using namespace std;
int main() {
int c,p,br;
long n,d,X;
cin >> n;
p=n%10; br=1; X=0; d=1;
while (n>0)
{ n=n/10;
c=n%10;
if (p==c)
br=br+1;
else {
X=X+(br*10+p)*d;
d=d*100;
br=1;
}
p=c;
}
cout << X << endl;