#line 1 "main.cpp"
#include <iostream>
#include <vector>
#include <string>
#include <set>

using namespace std;

const vector<pair<int, int>>
    dxys{{0, -1}, {1, 0}, {-1, 0}, {0, 1}, {1, 0}, {-1, 0}};

void solve() {
    string s;
    cin >> s;

    set<pair<int, int>> ss;
    int x = 0, y = 0;
    ss.emplace(x, y);

    for (char c : s) {
        int i = (c - 'a') * 2 + x;
        if (y % 2 != 0) i += 3;

        auto [dx, dy] = dxys[i % 6];
        x += dx, y += dy;
        ss.emplace(x, y);
    }

    cout << ss.size() << "\n";
}

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    solve();

    return 0;
}