[CSES] Repetitions

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

    ll ans = 0;
    rep(i, sz(s)) {
        char c = s[i];
        ll cnt = 0;
        while (i < sz(s) && s[i] == c) cnt++, i++;
        i--;
        ans = max(ans, cnt);
    }

    cout << ans << "\n";
}