// editor5
#include<stdio.h>
#include<stdlib.h>
typedef struct node{
    int data;
    struct node *left;
    struct node *right;
}Node;
Node *create(int num){
    Node *newnode=(Node*)malloc(sizeof(Node));
    newnode->data=num;
    newnode->left=newnode->right=NULL;
    return newnode;
}
Node *insert(Node *root,int num){
    if(root==NULL){
        return create(num);
    }
    if(num<root->data){
        root->left=insert(root->left,num);
    }
    else{
        root->right=insert(root->right,num);
    }
    return root;
}
int min_value(Node *root){
    if(root==NULL){
        return 0;
    }
    if(root!=NULL)
        return min_value(root->left);
    }
    return 0;
}
int main(){
    int n,num,min;
    Node *root=NULL;
    scanf("%d",&n);
    for(int i=0;i<n;i++){
        scanf("%d",&num);
        root=insert(root,num);
    }
    min=min_value(root);
    printf("%d",min);
    return 0;
}