#include <iostream>
#include <mutex>
#include <thread>
#include<condition_variable>
#include<deque>
using namespace std;
std::mutex m1;
std::condition_variable cv;
deque<int>buffer;
const unsigned int maxbuffersize=100;


void consumer()
{
    int x;
    while(true)
    {
        std::unique_lock<mutex> ul(m1);
        cv.wait(ul,[](){return buffer.size()>0;});
        if (buffer.size()!=0)
        {
          x = buffer.back();
          buffer.pop_back();
          cout<<"Consumer number : "<<x;
        }
        ul.unlock();
        cv.notify_one();
            
    }
    
}


void producer(int x)
{
    while(x)
        {
           std::unique_lock<mutex> ul(m1);
           cv.wait(ul,[](){return buffer.size()<=maxbuffersize;});
           buffer.push_back(x);
            x--;
            cout<<"Producer number : "<<x;
            ul.unlock();
            cv.notify_one();
        }
    
}

int main() {
    
    thread t1(producer,50);
    thread t2(consumer);
    t1.join();
    t2.join();
    return 0;
}