#include
using namespace std;
#include
int main()
{
vector<int>v1;
int N, D;
int may_empty, real_empty;
float e;
cin >> N;
cin >> e;
cin >> D;
may_empty = real_empty = 0;
for (int i = 1; i <= N; i++) {
int j = 1;
int data = 0;//记录当前用户用电量不足e的天数
int num_days;//当前用户天数
cin >> num_days;
while (j <= num_days) {
float elec;
cin >> elec;
if (elec < e)
data++;
j++;
}
if (data > num_days / 2) {
if (num_days > D) {
real_empty++; //确定空置加一
}
else {
may_empty++; //仅可能空置加一
}
}
}
printf("%.1f", (float)(may_empty * 100) / N);
cout << "% ";
printf("%.1f", (float)(real_empty * 100) / N);
cout << "%";
return 0;
}