#include <bits/stdc++.h>
int main(void) {
  int n;
  char c;
  for (; scanf("%d%c %*c %*c %*c", &n, &c), n;) {
    if (c == ' ') {
      clock_t c1 = clock() + CLOCKS_PER_SEC / 10;
      while (clock() < c1)
        ;
    }
  }
  return 0;
}
