#include <iostream>
#include <cstring>
#include <pthread.h>
#define SUCCESS 0
using namespace std;
 
int main() {
	int res;
	pthread_mutex_t t;
	pthread_mutex_init(&t, NULL);
 
	res = pthread_mutex_lock(&t);
 
	res = pthread_mutex_destroy(&t);
	if (res != SUCCESS)
	{
		cout << "Failed to delete: " << strerror(res) << " # " << t.__data.__lock << " " << t.__data.__nusers << endl;
	}
	else
	{
		cout << "Deleted!" << endl;
	}
 
	res = pthread_mutex_unlock(&t);
	cout << res << endl;
	pthread_exit(NULL);
 
	return 0;
 
}

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