#include<stdio.h>
#define MAXSIZE 200
void Insert(char, char *);
void main()
{
char ch;
char str[MAXSIZE];
scanf("%c",&ch);
scanf("%s",str);
Insert(ch,str);
printf(str);
while(1);
}
void Insert(char c, char *str)
{
int i = -1;
while(str[++i]!='\0')
if(i%2) str[i] = c;
}