#include <stdio.h>
#include <stdlib.h>

#define L long long

typedef struct{
    L *array;
    L head;
    L tail;
    L size;
}Queue;


void createQueue(Queue *queue, L size){
    queue->array = malloc(sizeof(L) * size);
    queue->head = 0;
    queue->tail = 0;
    queue->size = size;
}

void pushQ(Queue *queue, L value){
    printf("%lld\n", 10);
    queue->array[(queue->tail) % queue->size] = value;
    queue->tail++;
}

L popQ(Queue *queue){
    L ans = queue->head;
    queue->head = (queue->head + 1) % queue->size;
    return (queue->head);
}

int main(){
    FILE *in = fopen("input.txt", "r");
    FILE *out = fopen("output.txt", "w");

    L n_people, n_level;
    fscanf(in, "%lld %lld", &n_people, &n_level);

    Queue *people;

    createQueue(people, n_people);
    pushQ(people, 10);
    pushQ(people, 20);
    printf("%lld\n", popQ(people));
    printf("%lld\n", popQ(people));

    fclose(in);
    fclose(out);
    return 0;
}