View Compilation Error

0_0_30687138_30518\Main.java:1: 错误: 非法字符: '#'
#include <iostream>
^
0_0_30687138_30518\Main.java:1: 错误: 需要class, interface或enum
#include <iostream>
         ^
0_0_30687138_30518\Main.java:5: 错误: 需要class, interface或enum
long n;
^
0_0_30687138_30518\Main.java:7: 错误: 需要class, interface或enum
int main()
^
0_0_30687138_30518\Main.java:12: 错误: 需要class, interface或enum
	}
	^
0_0_30687138_30518\Main.java:15: 错误: 需要class, interface或enum
}
^
6 个错误