#include<stdio.h>
int main() {
    int n, a[100], x,f=0;
    scanf("%d", &n);
    if(n <= 0) {printf("Invalid input");return 0;
    for(int i = 0; i < n; i++)
        scanf("%d", &a[i]);
        if(a[i] <= 0) {
            printf("Invalid input");
            return 0;
        }
    }
    scanf("%d", &x);
        if(x<=0){
            printf("Invalid input");
            return 0;
        }
        for(int i=0;i<n;i++){
            if(a[i]==x){
            f=1;
            continue;
        }
        if(f)printf("%d", a[i]);
        else printf("%d", a[i]);
    }
     if(!f)printf("Route not found");
     return 0;
}