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

void* waste_time(void *unused){
	size_t sum = 0;
	for(unsigned int i = 0; i < pow(2, 31); i++)
		for(unsigned int j = 0; j < pow(2, 31); j++)
			sum += i * j;
	return 0;
}

int main(){
	pthread_t thread;
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	pthread_create(&thread, 0, waste_time, 0);
	waste_time(0);
	return 0;
}