/in/Main.java:1: error: illegal character: '#'
#include<iostream>
^
/in/Main.java:1: error: class, interface, or enum expected
#include<iostream>
        ^
/in/Main.java:2: error: illegal character: '#'
#include <cstdio>
^
/in/Main.java:4: error: '{' expected
class Matrix3;
             ^
/in/Main.java:5: error: ';' expected
Matrix3 operator +(Matrix3 &M1, Matrix3 &M2);
                ^
/in/Main.java:5: error: <identifier> expected
Matrix3 operator +(Matrix3 &M1, Matrix3 &M2);
                          ^
/in/Main.java:5: error: <identifier> expected
Matrix3 operator +(Matrix3 &M1, Matrix3 &M2);
                              ^
/in/Main.java:5: error: ';' expected
Matrix3 operator +(Matrix3 &M1, Matrix3 &M2);
                                       ^
/in/Main.java:5: error: <identifier> expected
Matrix3 operator +(Matrix3 &M1, Matrix3 &M2);
                                           ^
/in/Main.java:6: error: ';' expected
Matrix3 operator -(Matrix3 &M1, Matrix3 &M2);
                ^
/in/Main.java:6: error: <identifier> expected
Matrix3 operator -(Matrix3 &M1, Matrix3 &M2);
                          ^
/in/Main.java:6: error: <identifier> expected
Matrix3 operator -(Matrix3 &M1, Matrix3 &M2);
                              ^
/in/Main.java:6: error: ';' expected
Matrix3 operator -(Matrix3 &M1, Matrix3 &M2);
                                       ^
/in/Main.java:6: error: <identifier> expected
Matrix3 operator -(Matrix3 &M1, Matrix3 &M2);
                                           ^
/in/Main.java:7: error: '{' expected
class Vector3;
             ^
/in/Main.java:8: error: ';' expected
Vector3 operator +(Vector3 &v1, Vector3 &v2);
                ^
/in/Main.java:8: error: <identifier> expected
Vector3 operator +(Vector3 &v1, Vector3 &v2);
                          ^
/in/Main.java:8: error: <identifier> expected
Vector3 operator +(Vector3 &v1, Vector3 &v2);
                              ^
/in/Main.java:8: error: ';' expected
Vector3 operator +(Vector3 &v1, Vector3 &v2);
                                       ^
/in/Main.java:8: error: <identifier> expected
Vector3 operator +(Vector3 &v1, Vector3 &v2);
                                           ^
/in/Main.java:9: error: ';' expected
Vector3 operator -(Vector3 &v1, Vector3 &v2);
                ^
/in/Main.java:9: error: <identifier> expected
Vector3 operator -(Vector3 &v1, Vector3 &v2);
                          ^
/in/Main.java:9: error: <identifier> expected
Vector3 operator -(Vector3 &v1, Vector3 &v2);
                              ^
/in/Main.java:9: error: ';' expected
Vector3 operator -(Vector3 &v1, Vector3 &v2);
                                       ^
/in/Main.java:9: error: <identifier> expected
Vector3 operator -(Vector3 &v1, Vector3 &v2);
                                           ^
/in/Main.java:12: error: illegal start of type
public:
      ^
/in/Main.java:12: error: ';' expected
public:
       ^
/in/Main.java:13: error: ']' expected
	int a[3];
	      ^
/in/Main.java:13: error: ';' expected
	int a[3];
	       ^
/in/Main.java:14: error: illegal start of type
public:
      ^
/in/Main.java:14: error: ';' expected
public:
       ^
/in/Main.java:15: error: '{' expected
	friend class Matrix3;
	                    ^
/in/Main.java:16: error: invalid method declaration; return type required
	Vector3() 
	^
/in/Main.java:22: error: illegal start of type
	~Vector3() {}
	^
/in/Main.java:22: error: ';' expected
	~Vector3() {}
	 ^
/in/Main.java:22: error: illegal start of type
	~Vector3() {}
	        ^
/in/Main.java:22: error: <identifier> expected
	~Vector3() {}
	         ^
/in/Main.java:22: error: ';' expected
	~Vector3() {}
	          ^
/in/Main.java:23: error: <identifier> expected
	Vector3(Vector3 &v)
	               ^
/in/Main.java:23: error: ';' expected
	Vector3(Vector3 &v)
	                 ^
/in/Main.java:23: error: illegal start of type
	Vector3(Vector3 &v)
	                  ^
/in/Main.java:23: error: <identifier> expected
	Vector3(Vector3 &v)
	                   ^
/in/Main.java:24: error: ';' expected
	{
	 ^
/in/Main.java:25: error: <identifier> expected
		int i;
		     ^
/in/Main.java:26: error: illegal start of type
		for(i=0; i<3; i++)
		^
/in/Main.java:26: error: <identifier> expected
		for(i=0; i<3; i++)
		     ^
/in/Main.java:26: error: ';' expected
		for(i=0; i<3; i++)
		      ^
/in/Main.java:26: error: illegal start of type
		for(i=0; i<3; i++)
		           ^
/in/Main.java:26: error: <identifier> expected
		for(i=0; i<3; i++)
		            ^
/in/Main.java:26: error: ';' expected
		for(i=0; i<3; i++)
		             ^
/in/Main.java:26: error: illegal start of type
		for(i=0; i<3; i++)
		               ^
/in/Main.java:26: error: <identifier> expected
		for(i=0; i<3; i++)
		                 ^
/in/Main.java:26: error: ';' expected
		for(i=0; i<3; i++)
		                  ^
/in/Main.java:27: error: illegal start of type
			a[i] = v.a[i];
			 ^
/in/Main.java:27: error: ';' expected
			a[i] = v.a[i];
			   ^
/in/Main.java:27: error: ']' expected
			a[i] = v.a[i];
			           ^
/in/Main.java:27: error: ';' expected
			a[i] = v.a[i];
			            ^
/in/Main.java:29: error: ';' expected
	friend ostream& operator <<(ostream &o, Vector3 &v)
	              ^
/in/Main.java:29: error: <identifier> expected
	friend ostream& operator <<(ostream &o, Vector3 &v)
	                        ^
/in/Main.java:29: error: illegal start of type
	friend ostream& operator <<(ostream &o, Vector3 &v)
	                           ^
/in/Main.java:29: error: ';' expected
	friend ostream& operator <<(ostream &o, Vector3 &v)
	                                   ^
/in/Main.java:29: error: <identifier> expected
	friend ostream& operator <<(ostream &o, Vector3 &v)
	                                      ^
/in/Main.java:29: error: ';' expected
	friend ostream& operator <<(ostream &o, Vector3 &v)
	                                               ^
/in/Main.java:29: error: <identifier> expected
	friend ostream& operator <<(ostream &o, Vector3 &v)
	                                                  ^
/in/Main.java:33: error: ';' expected
	friend istream& operator >>(istream &i, Vector3 &v)
	              ^
/in/Main.java:33: error: <identifier> expected
	friend istream& operator >>(istream &i, Vector3 &v)
	                        ^
/in/Main.java:33: error: illegal start of type
	friend istream& operator >>(istream &i, Vector3 &v)
	                           ^
/in/Main.java:33: error: ';' expected
	friend istream& operator >>(istream &i, Vector3 &v)
	                                   ^
/in/Main.java:33: error: <identifier> expected
	friend istream& operator >>(istream &i, Vector3 &v)
	                                      ^
/in/Main.java:33: error: ';' expected
	friend istream& operator >>(istream &i, Vector3 &v)
	                                               ^
/in/Main.java:33: error: <identifier> expected
	friend istream& operator >>(istream &i, Vector3 &v)
	                                                  ^
/in/Main.java:37: error: ';' expected
	friend Vector3 operator +(Vector3 &v1, Vector3 &v2)
	              ^
/in/Main.java:37: error: <identifier> expected
	friend Vector3 operator +(Vector3 &v1, Vector3 &v2)
	                       ^
/in/Main.java:37: error: illegal start of type
	friend Vector3 operator +(Vector3 &v1, Vector3 &v2)
	                         ^
/in/Main.java:37: error: ';' expected
	friend Vector3 operator +(Vector3 &v1, Vector3 &v2)
	                                 ^
/in/Main.java:37: error: <identifier> expected
	friend Vector3 operator +(Vector3 &v1, Vector3 &v2)
	                                     ^
/in/Main.java:37: error: ';' expected
	friend Vector3 operator +(Vector3 &v1, Vector3 &v2)
	                                              ^
/in/Main.java:37: error: <identifier> expected
	friend Vector3 operator +(Vector3 &v1, Vector3 &v2)
	                                                  ^
/in/Main.java:45: error: ';' expected
	friend Vector3 operator -(Vector3 &v1, Vector3 &v2)
	              ^
/in/Main.java:45: error: <identifier> expected
	friend Vector3 operator -(Vector3 &v1, Vector3 &v2)
	                       ^
/in/Main.java:45: error: illegal start of type
	friend Vector3 operator -(Vector3 &v