#include <pthread.h>
#include <stdio.h>

int sum0 = 0, sum1 = 0, sum2 = 0;

pthread_t thread[2];
pthread_barrier_t barr;

int randNum(int from, int to)
{
	return from + (rand() % (to - from + 1));
}

void *func(void* p)
{
	int arr[5];
	int num = (int)(p);
	if (num == 0) {
		for (int i = 0; i < 5; i++) 
			arr[i] = randNum(0, 10); //i + 1; //{1, 2, 3, 4, 5};
	}
	if (num == 1) {
		for (int i = 0; i < 5; i++)
			arr[i] = randNum(0, 10); //i + 3; //{3, 4, 5, 6, 7};
	}
	if (num == 2) {
		for (int i = 0; i < 5; i++)
			arr[i] = randNum(0, 10); //i + 5; //{5, 6, 7, 8, 9};
	}

	for (int i = 0; i < 5; i++)
	{
		if (num == 0) {
			sum0 += arr[i];
		}

		if (num == 1) {
			sum1 += arr[i];
		}

		if (num == 2) {
			sum2 += arr[i];
		}
	}

	if (num == 0)
		printf("Имеем №1 %d \n", sum0);
	if (num == 1)
		printf("Имеем №2 %d \n", sum1);
	if (num == 2)
		printf("Имеем №3 %d \n", sum2);

	while (sum0 != sum1 || sum1 != sum2) {
		pthread_barrier_wait(&barr);
		if (num == 0) {
			if (sum0 > sum1) {
				sum0--;
				arr[0]--;
			}
			if (sum0 < sum1) {
				sum0++;
				arr[0]++;
			}
		}

		if (num == 2) {
			if (sum2 > sum1) {
				sum2--;
				arr[2]--;
			}
			if (sum2 < sum1) {
				sum2++;
				arr[2]++;
			}	
		}

		if (num == 1) {
			if (sum1 > sum0 || sum1 < sum0 || sum1 > sum2 || sum1 < sum2) {
				int r = randNum(0, 1);
				if (r == 0) {
					sum1++;
					arr[1]++;
				}
				else {
					sum1--;
					arr[1]--;
				}
			}
		}

		pthread_barrier_wait(&barr);
		if (num == 0)
			printf("Поменяли №1 %d \n", sum0);
		if (num == 1)
			printf("Поменяли №2 %d \n", sum1);
		if (num == 2)
			printf("Поменяли №3 %d \n", sum2);
		pthread_barrier_wait(&barr);
	}
	pthread_barrier_wait(&barr);
	if (num == 0)
		printf("Результат №1 %d \n", sum0);
	if (num == 1)
		printf("Результат №2 %d \n", sum1);
	if (num == 2)
		printf("Результат №3 %d \n", sum2);
	pthread_barrier_wait(&barr);
	return NULL;
}

int main()
{
	pthread_barrier_init(&barr, NULL, 3);
	pthread_create(&thread[0], NULL, func, (void *)0);
	pthread_create(&thread[1], NULL, func, (void *)1);

	func((void*)2);

	return 0;
}