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

int top = -1;
int blad = 0;

struct stos{
    int array[100];
    int next;

};

int STACK_EMPTY(){
    if(top==0)
        return -1;
    else
        return 1;

}

void PUSH(struct stos *S,int x){
    scanf("%d",&x);
    top = top +1;
    S->array[top] = x;
    S->next = top+1;
}


void POP(struct stos *S,int x){
    if(STACK_EMPTY() == -1){
        blad =1;
    }else{
        top--;
    }
}
void END(struct stos *S){
    int i;
    for(i=0;i<S.next;i++){
        printf("%d")
    }
}


int main()
{
    struct stos heap;
    PUSH(&heap,1);
    printf("%d\n",top);
    printf("%d\n",heap.next);







    printf("%d\n",heap.array[0]);
    return 0;
}