#include <iostream>
using namespace std;
void swap(char a[],int n,int count){
a[n-count]=a[n];
for (int i = 0; i < count; ++i)
{
a[n-i]='x';
}
return;
}
void xatlast(char a[],int n,int count){
if(a[n]=='\0'){
return;
}
if(a[n]=='x'){
count++;
}
else{
swap(a,n,count);
}
xatlast(a,n+1,count);
}
int main(){
char a[100];
cin>>a;
xatlast(a,0,0);
cout<<a;
return 0;
}
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