#include <iostream>
#include <bits/stdc++.h>
 using namespace std;


void findStudentsUnableToEatLunch(queue<int> food, queue<int>students){
    int foodNotMatched =0;
    while(!food.empty()){

    if(students.front() == food.front()){
        food.pop();
        students.pop();
    }else{
        foodNotMatched++;
        if(foodNotMatched == students.size()){
            break;
        }else{
            students.push(students.front());
            students.pop();
        }
    }
      
    
    
}
cout<<"The element remaning is: " << students.size()<<endl;
}
 

 int main() {
 //Write your C++ code here
 queue<int> food;
 food.push(1);
 food.push(0);
 food.push(0);
 food.push(0);
 food.push(1);
 food.push(1);
 queue<int> students;
 students.push(1);
 students.push(1);
 students.push(1);
 students.push(0);
 students.push(0);
 students.push(1);
 findStudentsUnableToEatLunch(food,students);
 return 0;
 }