#include <stdio.h>
#include <string.h>

int stPos;
int memoPos;
char memo[1000][15];
char stack[15];

int saiki(char *str, int s, int g){
	int i;
	int ret = 0;
	
	if( s == g ){
		int noHit = 1;
		
		stack[stPos] = str[s];
		stack[stPos+1] = '\0';
		
		for(i=0;i<memoPos;i++){
			if(strcmp(memo[i], stack) == 0 ){
				noHit = 0;
				break;
			}
		}
		
		if(noHit){
//			printf("%d %d %s\n", s, g, stack);
			strcpy(memo[memoPos], stack);
			memoPos += 1;
			return 1;
		}
		return 0;
	}
	
	stack[stPos] = str[s];
	stPos++;
	stack[stPos] = '\0';
	ret = ret + saiki(str,s+1,g);
	stPos--;
	
	
	stack[stPos] = str[g];
	stPos++;
	stack[stPos] = '\0';
	ret = ret + saiki(str,s,g-1);
	stPos--;
	
	return ret;
}

int main(void){
	int cnt;
	char s[15];
	
	scanf("%s", s);
	
	
	cnt = saiki(s, 0, strlen(s)-1);
	
	printf("%d\n", cnt);
	return 0;
}