#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main()
{
    char name[11];
    int i,l;
    fgets(name,sizeof(name),stdin);
    name[strcspn(name,"\n")]==0;
    l = strlen(name);
    if (l<1 || l>10){
        printf("Invalid input");
        return 1;
    }
    for (i=0;i<l;i++){
        if (isdigit(name[i])){
            printf("Invalid input");
            return 1;
        }
    }
    for (i=1;i<=l;i++){
        for ()
    }
    return 0;
}