public static int SecId(Interval[] secInt, int sec) {
for (int i = 0; i < secInt.Length; i++) if (sec >= secInt[i].From) return i;
return 0;
}
public static int ScoreId(Interval[] ints, int? score) {
if (score == null) return ints.Length - 1;
int s = (int)score;
for (int i = 0; i < ints.Length; i++) if (s > ints[i].From) return i;
return 0;
}