#include<stdio.h>
int main(){
    int n;
    scanf("%d",&n);
    int arr[100];
    int small=1000000;
    
    for( int i=0;i<=n;i++){
        
        scanf("%d",&arr[i]);
    }
    for(int i=0;i<=n;i++){
        
        
        if(arr[i]>0){
            small=arr[i];
            if (arr[i]<small){
                small=arr[i];
                printf("%d",small);
            }
                
            
        }
        else{
            printf("Invalid I")
        }
        
    }
      
      return 0;
}