#include<stdio.h>
#include<stdlib.h>
typedef struct node{
    int data;
    struct Node *next;
}nd;
nd *head=NULL, *tail;
void create (int num){
    nd*newnode=(nd*)malloc(1*sizeof(nd));
    newnode->data=num;
    newnode->next=NULL;
    if(head==NULL){
        newnode=head;
        newnode=tail;
    }
    else{
        tail ->next=newnode;
        tail=newnode;
    }
}
int main(){
    int n,num,itr;
    int count=0;
    scanf("%d",&n);
    if(n<0){
        printf("Invalid input");
        return 0;
    }
    for(itr=0;itr<n;itr++){
        scanf("%d",&num);
        create(num);
        count++;
    }
    printf("%d",count);
    return 0;
}