View Compilation Error

0_0_2975081_15793\Main.java:9: 非法字符： \8211
for(int i = 3; i <= 1000; i++) a[i] = a[i - 2].add(BigInteger.valueOf(2).pow(i – 3)); Scanner in = new Scanner (System.in); while(in.hasNext()) System.out.println(a[in.nextInt()]); } }