@x
    if (mate[t] && mate[t]!=t) break;
  }
  if (t>ll) printf("1"); /* we win: this cycle is all by itself */
@y
    if (mate[t]) break;
  }
  if (t>n) printf("1"); /* we win: this cycle is all by itself */
@z
@x
    if (mate[t] && mate[t]!=t) break;
@y
    if (mate[t]) break;
@z