#include<stdio.h>
int main(){
    int n;
    scanf("%d", &n);
    
    if(n<=0){
        printf("Invalid Input");
        return 0;
    }
    int arr[n];
    for(int i = 0; i < n; i++){
        scanf("%d", &arr[i]);
        if(arr[i] < 0) {
            printf("Invaid Input");
            return 0;
        }
    }
    int smallest = [0];
    for (int i = 1; i< n; i++) {
        if (arr[i] < smallest)
        smallest = arr[i];
}

printf("%d", min);
return 0;
}