#include <stdio.h>

int main() {
    int size,val;
    scanf("%d",&size);
    int arr[]={10,20,30,40,50};
    for(int i=0;i<size,i++){
        arr[i]=arr[i+1];
        return 0;
       
    }
    printf("%d",arr[i]);
    return 0;
    
}