#include #include using namespace std; using vi = vector; bool almost_perfect(const vi &big, const vi &small) { int diff = 0; for (int c = 0; c < 26; c++) { if (big[c] < small[c]) { return false; } diff += big[c] - small[c]; } return diff == 1; } int solve() { string S; cin >> S; vector pre(S.size() + 1, vi(26)); for (int i = 1; i <= (int)S.size(); i++) { pre[i] = pre[i - 1]; pre[i][S[i - 1] - 'a']++; } int Q; cin >> Q; int ans = 0; for (int i = 0, l, r; i < Q; i++) { cin >> l >> r; --l, --r; if ((r - l + 1) % 2 == 0) { continue; } auto get_freqs = [&](int l, int r) { vi res; for (int c = 0; c < 26; c++) { res.push_back(pre[r + 1][c] - pre[l][c]); } return res; }; int m = (l + r) / 2; if (almost_perfect(get_freqs(l, m), get_freqs(m + 1, r)) || almost_perfect(get_freqs(m, r), get_freqs(l, m - 1))) { ans++; } } return ans; } int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); int T; cin >> T; for (int t = 1; t <= T; t++) { cout << "Case #" << t << ": " << solve() << endl; } return 0; }