#include <iostream>
#include <unistd.h>
#include <cstdlib>
#include <pthread.h>
#include <sys/types.h>
#include <csignal>

using namespace std;
int n;
int c=0;
pthread_mutex_t monitor;
pthread_cond_t red;

void prekid(int sig){
    pthread_mutex_destroy(&monitor);
    pthread_cond_destroy(&red);
    kill(getpid(),SIGKILL);
}

void *dretva(void *x){
    int tid = (*(int*)x);
    int a;
    pthread_mutex_lock(&monitor);
    c++;
    cout << "Dretva: " << tid << ", unesite broj: ";
    cin >> a;
    if (c<n){
        pthread_cond_wait(&red, &monitor);
    }
    else{
        pthread_cond_broadcast(&red);
    }
    pthread_mutex_unlock(&monitor);

    pthread_mutex_lock(&monitor);
    cout << "Dretva: " << tid << ", unesen je broj: " << a << endl;
    pthread_mutex_unlock(&monitor);
}

int main(int argc, char** argv){
    int j[n];
    if (argc==2){
        n=atoi(argv[1]);
    }
    else return (0);
    pthread_t d[n];
    pthread_mutex_init(&monitor, NULL);
    pthread_cond_init(&red, NULL);
    sigset(SIGINT,prekid);

    for (int i=0;i<n;i++){
        j[i]=i+1;
        pthread_create(&d[i], NULL, dretva, &j[i]);
    }
    for (int i=0;i<n;i++){
        pthread_join(d[i],NULL);
    }
    pthread_mutex_destroy(&monitor);
    pthread_cond_destroy(&red);

}