#include<stdio.h>
main()
{
        char c[10];
        int i;
        printf("\n enter the characters");
        for(i=0;i<=10;i++)
        {
                scanf("%c",&c[i]);


        }
        for(i=0;i<c[10];i++)
        {
                if(c[i]=='$')
                {
                        printf("@ %c",c[i]);
                }
                else if(c[i]=='@')
                        {
                                printf("@ %c",c[i]);
                        }
                        else
                                printf("%c",c[i]);

        }
}