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

typedef struct node{
    int data;
    struct node *next;
    struct node *prev;
}Node;

Node *head=NULL, *tail;
void create(int num){
    Node *newNode = (Node*)malloc(1*sizeof(Node));
    newNode->data = num;
    newNode->next = NULL;
    newNode->prev = NULL;
    if(head==NULL){
        head = newNode;
        tail = newNode;
    }
    else{
        tail->next = newNode;
        newNode->prev = tail;
        tail = newNode;
    }
}

void largeVal(){
    Node *itr;
    for(itr=head->next;itr != NULL;itr=itr->next){
        if(itr->data > itr->prev->data){
            itr = itr->data;
        }
    }
        printf("%d",itr);
}

int main(){
    int size,num,i;
    scanf("%d",&size);
    if(size<=0){
        printf("Invalid input");
        return 0;
    }
    for(i=1;i<=size;i++){
        if(!scanf("%d",&num)){
            printf("Invalid input");
            return 0;
        }
        create(num);
    }
    largeVal();
    return 0;
}