#include <bits/stdc++.h>
int main(void) {
  int a = 1, n, f = 0;
  char c;
  for (n = 0; n < 10; ++n) scanf("%*d %*c %*c %*c");
  while (scanf("%d%c %*c %*c %*c", &n, &c), n != 0) {
    if (c == ' ') {
      clock_t c1 = a * CLOCKS_PER_SEC / 50 + clock();
      while (clock() < c1)
        ;
      if (f++) return 0;
      c1 = CLOCKS_PER_SEC / 2 + clock();
      while (clock() < c1)
        ;
    }
    ++a;
  }
  return 0;
}
