#include <stdio.h>
#include <ctype.h>

#define TRUE 1
#define FALSE 0

int apply_password_policy(char password[], int len){

        int i,j,k=0;

        /* Policy1:
         * Space not allowed in the password
         */
        for (i=0; i<len; i++){
                if (password[i] == ' '){
                        return FALSE;
                }
        }

        /* Policy2:
         * Password should be between 1 to 10 Uppercase letters
         */
        for (i=0; i<len; i++){
                if (!isupper(password[i])){
                        return FALSE;
                }
        }

        /* Policy3:
         * Same character should not appear together.
         */
        for (i=0; i<len; i++) {
                if  ( i+1 < len) {
                        if (password[i] == password[i+1])
                                return FALSE;
                }
        }

        /* Policy4:
         * Same string shold not appear together.
         */
        for (i=0; i<len; i++){
                for (j=i+1; j<len; j++) {
                        if(password[i] == password[j]) {
                                if ( k == 0) {
                                        /* store the J value when first character match happens
                                         */
                                        k=j;
                                        break;
                                }

                                /* Next subscript of 'i' is equal to the first charater match happens at 'J'
                                 * Meaning, substring is together.
                                 */
                                if ( i+1 == k)
                                        return FALSE;
                        }
                }
        }

        return TRUE;
}

int main(){

        char password[10];
        int len=0;

        printf("Enter the password: ");

        while (1) {
                password[len]=getc(stdin);
                if (password[len]=='\n'){
                        password[len]='\0';
                        break;
                }
                len++;
        }

        if (apply_password_policy(password, len))
                printf ("Password Accepted. \n");
        else
                printf("Password Rejected. \n");

        return 0;
}