#include <cstdio>
#include <cstring>
#define mod 10007
#define MN 100005
int plus(int x, int y) {
	if (x+y < mod) return x+y;
	return (x+y)-mod;
}
int d[MN], pos[26], n;
char S[MN];
int main() {
	scanf("%s",S+1);
	n = strlen(S+1);
	for (int i = 1; i <= n; i++) {
		int k = (int)(S[i]-'a');
		if (pos[k] == 0) d[i]++;
		else d[i] = plus(d[i], d[pos[k]]);
		for (int j = pos[k]+1; j < i; j++) d[i] = plus(d[i], d[j]);
		pos[k] = i;
	}
	int res = 0;
	for (int i = 1; i <= n; i++) res = plus(res, d[i]);
	printf("%d",res);
}

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