View Code of Problem 77

#include<bits/stdc++.h>
using namespace std;

int main(void)
{
  string s;
  cin>>s;
  int i;
  for(i=0;i<4;++i)
  {
    if(i==0)
      cout<<s[i];
    else
      cout<<" "<<s[i];
  }
}