#include<stdio.h>
int main(){
    int n,d;
    int routes[100];
    int i, found =0;
    
    scanf("%d",&n);
    
    if(n<1 || n>100){
        printf("Invalid input");
        return 0;
    }
    for(i=0;i<n;i++){
        scanf("%d", &routes[i]);
        if(routs[i] < 1){
            printf("Invalid input");
            return 0;
        }
    }

scanf("%d", &d);

if(d<1){
    printf("Invalid input");
    return 0;
}
if(!found){
    printf("Route not found");
}
return 0;
}