Language: Java

//.h file code:

public:
#include <bits/stdc++.h> @using @namespace std;

#define NDEBUG #ifdef DEBUG #include "cout11.h" #undef NDEBUG #endif #include <cassert^> @typedef TangibleTemplonglong TangibleTemplonglong ll;
typedef_Renamed *unsigned_Renamed;
typedef_Renamed *pair;
typedef_Renamed *pair;
typedef_Renamed *pair;

typedef_Renamed *vector;
typedef_Renamed *vector;
typedef_Renamed *vector;
typedef_Renamed *vector;
typedef_Renamed *vector;

virtual # define *sz(a);

virtual int main();

//.cpp file code:

# define ^<missing_class_definition>::sz(a)
{
	if (X > Y)
	{
		swap(A,B);
		swap(X,Y);
	}
	// X <= Y
	ll *w1 = A*X + B*Y;
	ll *tw = C*2;
	ll *w2 = tw*X + B*(Y - X);
	ll *w3 = tw*Y;

	return min(min(w1,w2),w3);
}

int <missing_class_definition>::main()
{
	int A, B, C, X, Y;
	cin >> A >> B >> C >> X >> Y;
	cout << solve(A,B,C,X,Y) << endl;
	return 0;
}

Compiler output:
Main.java:3: error: class, interface, enum, or record expected
public:
      ^
Main.java:4: error: illegal character: '#'
#include <bits/stdc++.h> @using @namespace std;
^
Main.java:4: error: class, interface, enum, or record expected
#include <bits/stdc++.h> @using @namespace std;
                                           ^
Main.java:6: error: illegal character: '#'
#define NDEBUG #ifdef DEBUG #include "cout11.h" #undef NDEBUG #endif #include <cassert^> @typedef TangibleTemplonglong TangibleTemplonglong ll;
^
Main.java:6: error: illegal character: '#'
#define NDEBUG #ifdef DEBUG #include "cout11.h" #undef NDEBUG #endif #include <cassert^> @typedef TangibleTemplonglong TangibleTemplonglong ll;
               ^
Main.java:6: error: illegal character: '#'
#define NDEBUG #ifdef DEBUG #include "cout11.h" #undef NDEBUG #endif #include <cassert^> @typedef TangibleTemplonglong TangibleTemplonglong ll;
                            ^
Main.java:6: error: illegal character: '#'
#define NDEBUG #ifdef DEBUG #include "cout11.h" #undef NDEBUG #endif #include <cassert^> @typedef TangibleTemplonglong TangibleTemplonglong ll;
                                                ^
Main.java:6: error: illegal character: '#'
#define NDEBUG #ifdef DEBUG #include "cout11.h" #undef NDEBUG #endif #include <cassert^> @typedef TangibleTemplonglong TangibleTemplonglong ll;
                                                              ^
Main.java:6: error: illegal character: '#'
#define NDEBUG #ifdef DEBUG #include "cout11.h" #undef NDEBUG #endif #include <cassert^> @typedef TangibleTemplonglong TangibleTemplonglong ll;
                                                                     ^
Main.java:6: error: class, interface, enum, or record expected
#define NDEBUG #ifdef DEBUG #include "cout11.h" #undef NDEBUG #endif #include <cassert^> @typedef TangibleTemplonglong TangibleTemplonglong ll;
                                                                                                  ^
Main.java:7: error: class, interface, enum, or record expected
typedef_Renamed *unsigned_Renamed;
^
Main.java:8: error: class, interface, enum, or record expected
typedef_Renamed *pair;
^
Main.java:9: error: class, interface, enum, or record expected
typedef_Renamed *pair;
^
Main.java:10: error: class, interface, enum, or record expected
typedef_Renamed *pair;
^
Main.java:12: error: class, interface, enum, or record expected
typedef_Renamed *vector;
^
Main.java:13: error: class, interface, enum, or record expected
typedef_Renamed *vector;
^
Main.java:14: error: class, interface, enum, or record expected
typedef_Renamed *vector;
^
Main.java:15: error: class, interface, enum, or record expected
typedef_Renamed *vector;
^
Main.java:16: error: class, interface, enum, or record expected
typedef_Renamed *vector;
^
Main.java:18: error: illegal character: '#'
virtual # define *sz(a);
        ^
Main.java:20: error: class, interface, enum, or record expected
virtual int main();
^
Main.java:24: error: illegal character: '#'
# define ^<missing_class_definition>::sz(a)
^
Main.java:24: error: class, interface, enum, or record expected
# define ^<missing_class_definition>::sz(a)
         ^
Main.java:29: error: class, interface, enum, or record expected
		swap(X,Y);
		^
Main.java:30: error: class, interface, enum, or record expected
	}
	^
Main.java:33: error: class, interface, enum, or record expected
	ll *tw = C*2;
	^
Main.java:34: error: class, interface, enum, or record expected
	ll *w2 = tw*X + B*(Y - X);
	^
Main.java:35: error: class, interface, enum, or record expected
	ll *w3 = tw*Y;
	^
Main.java:37: error: class, interface, enum, or record expected
	return min(min(w1,w2),w3);
	^
Main.java:38: error: class, interface, enum, or record expected
}
^
Main.java:43: error: class, interface, enum, or record expected
	cin >> A >> B >> C >> X >> Y;
	^
Main.java:44: error: class, interface, enum, or record expected
	cout << solve(A,B,C,X,Y) << endl;
	^
Main.java:45: error: class, interface, enum, or record expected
	return 0;
	^
Main.java:46: error: class, interface, enum, or record expected
}
^
34 errors