#include <iostream>
#include <vector>
#include <string>

using namespace std;

int main() {
    int T;
    cin >> T;
    for (int t = 1; t <= T; ++t) {
        int N;
        cin >> N;
        vector<pair<char, int>> buttons(N);
        for (int i = 0; i < N; ++i) {
            cin >> buttons[i].first >> buttons[i].second;
        }

        int time = 0;
        int time_O = 0, time_B = 0;
        int pos_O = 1, pos_B = 1;
        for (int i = 0; i < N; ++i) {
            char robot = buttons[i].first;
            int target = buttons[i].second;
            int time_target = abs(target - (robot == 'O' ? pos_O : pos_B)) + 1;
            int time_other = (robot == 'O') ? time_B - time_O : time_O - time_B;

            if (robot == 'O') {
                time_O += max(time_target, max(0, time_other + 1));
                pos_O = target;
            } else {
                time_B += max(time_target, max(0, time_other + 1));
                pos_B = target;
            }
            time = max(time_O, time_B);
        }

        cout << "Case #" << t << ": " << time << endl;
    }
    return 0;
}