#include <bits/stdc++.h>

using namespace std;

int length(char s[]){

if(s[0]=='\0'){

return 0;

}

int smalloutput = length(s+1);

return 1+smalloutput;

}

void removeX(char s[]){

if(s[0]=='\0'){

return;

}

if(s[0]!='x'){

removeX(s+1);

}

else{

int i=1;

for(;s[i]=='\0';i++){

s[i-1]=s[i];

}

s[i-1]=s[i];

removeX(s);

}

}

void removeDuplicates(char s[]){

if(s[0]=='\0'){

return;

}

if(s[0]==s[1]){

int i = 0;

while (s[i] != '\0') {

s[i] = s[i + 1];

i++;

}

removeDuplicates(s);

}

removeDuplicates(s+1);

}

int main() {

// Write C++ code here

cout<<"---------program started---------"<<endl;

char str[100];

cin>>str;

int l =length(str);

cout<<"length of string is: "<<l<<endl;

removeX(str);

cout<<str<<endl;

removeDuplicates(str);

cout<<str<<endl;

return 0;

}