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View Compilation Error

0_0_30068736_5008\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_30068736_5008\Main.java:4: 错误: 需要class, interface或enum
		BigInteger x,y;
		^
0_0_30068736_5008\Main.java:5: 错误: 需要class, interface或enum
		x=scan.nextBigInteger();
		^
0_0_30068736_5008\Main.java:6: 错误: 需要class, interface或enum
		y=scan.nextBigInteger();
		^
0_0_30068736_5008\Main.java:7: 错误: 需要class, interface或enum
		x=x.add(y);
		^
0_0_30068736_5008\Main.java:8: 错误: 需要class, interface或enum
		System.out.println(x);
		^
0_0_30068736_5008\Main.java:9: 错误: 需要class, interface或enum
	}
	^
7 个错误


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