#include<iostream>
#include<string>
using namespace std;
int main(){
  string a;
  getline(cin,a);
  char n[a.size()+1];
  while(a[n]=='\n'){
  while(a[n]==' '){
  	a[n]++;
  }
  n++
  }
  n=0;
  for(int m=0;a.size()-1;m++){
  	cout<<a[n];
  	n++;
  }
  return 0;
}