#include <iostream>

using namespace std;

string s;

long long magic(int l, int r) {

long long ans = 0;

for (int i = l; i <= r; ++i) {

ans = ans * 4 + s[i] - 'a' + 1;

}

return ans;

}

int main() {

cin >> s;

int len = s.length();

int ans = 0;

for (int l1 = 0; l1 < len; ++l1) {

for (int r1 = l1; r1 < len; ++r1) {

bool bo = true;

for (int l2 = 0; l2 < len; ++l2) {

for (int r2 = l2; r2 < len; ++r2) {

if (magic(l1, r1) == magic(l2, r2) && (l1 != 

l2 || r1 != r2)) {

bo = false;

}

}

}

if (bo) {

ans += 1;

}

}

}

cout << ans << endl;

return 0;

}

输入：abacaba

输出：_________