include <bits/stdc++.h>

using namespace std;

define N 10010

struct node {

int v;
double c;

}; node a[N];

int main(void) {

int n, top = 1;
char ch;
cin >> a[top].v >> a[top].c >> n;
while (n--) {
	cin >> ch;
	if (ch == 'Z' && top > 1) {
		top--;
	}
	if (ch == 'P') {
		top++;
		cin >> a[top].v >> a[top].c;
		a[top].v = a[top - 1].v + a[top].v;
		a[top].c = (a[top - 1].c * a[top - 1].v + (a[top].v - a[top - 1].v) * a[top].c) / a[top].v;
	}
	printf("%d %.5lf\n", a[top].v, a[top].c);
}

return 0;

}