int main()
{
int n;
cin >> n;
for (int i = 1; i <= n; i++)
{
int TM = 0, TS = 0;
int M;
cin >> M;
int calb = 0, tempc = 0;
for (int j = 0; j < M; j++)
{
int a, b;
cin >> a >> b;
tempc = a * 60 + b;
if (calb == 0)
{
calb = tempc;
}
else if (tempc < calb)
{
calb = tempc;
}
TS = TS + b + a * 60;
}
int average = TS / M;
TS = average % 60;
TM = average / 60;
int calbm = calb / 60, calbs = calb % 60;
cout << "Track " << i << ":" << endl;
cout << "Best Lap: " << calbm << " minute(s) " << calbs << " second(s)." << endl;
cout << " Average: " << TM << " minute(s) " << TS << " second(s)." << endl;
}
return 0;
}