static int done_minPrint = 10;

static long done(long startTime, S desc) {
  long time = now()-startTime;
  if (time >= done_minPrint)
    print(desc + " [" + time + " ms]");
  ret time;
}

static long done(S desc, long startTime) {
  ret done(startTime, desc);
}

static long done(long startTime) {
  ret done(startTime, "");
}