import java.util.Scanner;
class abc
{
public static void main
(String args
[]) {
Scanner ob
=new Scanner
(System.
in); int i,l,sp,k,j,n,b;
System.
out.
println("Enter any word"); nm=ob.next();
l=nm.length();
n=(l/2)+1;
b=l;
sp=0;
for(i=1;i<=n;i++)
{
for(k=1;k<=sp;k++)
{
}
for(j=i-1;j<b;j++)
{
System.
out.
print(nm.
charAt(j
)); }
sp++;
b--;
}
}
}
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