import java.io.*;
class ShortName
{
String help="fast";
protected static void main()throws IOException
{
BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
System.out.print("Enter your name: ");
String s=in.readLine();
char ch; short c=0,d=0,e=0;
do
{
ch=s.charAt(d);
if(ch==' ')
c++;
d++;
}while(d<s.length());
String w[]=new String[c+1];
for(d=0;d<=c;d++)
w[d]="";
for(d=0;d<s.length();d++)
{
ch=s.charAt(d);
if(ch==' ')
{
e++;
continue;
}
w[e]+=ch;
}
for(d=0;d<=c;d++)
{
if(d==c)
System.out.print(w[d]);
else
System.out.print(w[d].charAt(0)+". ");
}
}
}
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