#include<stdio.h>
int main()
{
    int n,u,v,s,d;
    scanf("%d\n",&n);
    scanf("%d\n",&u);
    scanf("%d\n",&v);
    scanf("%d\n",&s);
    scanf("%d\n",&d);
    if(n<0){
        printf("Invalid input");
        
    }
    else{
        
    printf("%d",u);
}