/* 18:40-19:00 */
#include <stdio.h>
#include <math.h>

int compound(int initial, int years, double rate, int charge)
{
  int y;
  for (y = 0; y < years; y++) {
    initial += (int)floor(rate * initial) - charge;
  }
  return initial;
}

int single(int initial, int years, double rate, int charge)
{
  int y, interest = 0;
  for (y = 0; y < years; y++) {
    interest += (int)floor(rate * initial);
    initial -= charge;
  }
  return initial + interest;
}

int main()
{
  int I, i, m, initial, years, n, max = 0, y;

  scanf("%d", &m);
  for (I = 0; I < m; I++) {
    scanf("%d", &initial);
    scanf("%d", &years);
    scanf("%d", &n);

    max = 0;
    for (i = 0; i < n; i++) {
      int is_compound; double rate; int charge, result;
      scanf("%d%lf%d", &is_compound, &rate, &charge);
      if (is_compound) { result = compound(initial, years, rate, charge); }
      else { result = single(initial, years, rate, charge); }
      if (max < result) { max = result; }
    }
    printf("%d\n", max);
  }
  return 0;
}