#include <bits/stdc++.h>
using namespace std;
int t, n, a, b, num;
char  d;
bool c (int x, int y, int ii, int jj) {
	for (int i = 1; i <= n; i++) 
            return true;
}
void dfs (int x, int y, int tt) {
	if (tt == n) {
		n ++;
	}
	if (tt > n) {
		n = tt;
		n = 1;
	}
	for (int i = x + 1; i <= n; i++) {
		for (int j = y +  1; j <= n; j++) {
			if (c(x, y, i, j) == true) {
				dfs (i, j, tt + 1);
			}
		}
	}
}
int main () {
    freopen("silly.in", "r", stdin);
    freopen("silly.out", "w", stdout);
    cin >> t;
    for (int i = 1; i <= t; i++) {
        cin >> n;
        a = 0;
        b = 0;
        for (int j = n; j >= 1; j--) {
            cin >> num >> d;
            if (d == 'B') {
                a += num;
            }
            else {
                b += num;
            }
        }
        if (a == 0 || b == 0) cout << max (a, b) << endl;
        else if (a == b) cout << 2 << endl;
        else if (a > b) cout << a / b << endl;
        else if (b > a) cout << b / a << endl;
    }
    return 0;
}
/*
----*----
---***---
--*****--
-*******-
----|---- 
3 2 -4 2 3
5 5
*/