#include<stdio.h>
int main()
{
    int a;
    int b;l
    int c;
    int d;
    int e;
    int f;
    int g;
    int h;
    
    scanf("%d" ,&a);
    scanf("%d" ,&b);
    scanf("%d" ,&c);
    scanf("%d" ,&d);
    scanf("%d" ,&e);
    scanf("%d" ,&f);
    scanf("%d" ,&g);
    scanf("%d" ,&h);
    
    printf("%d", a);
    printf("%d", b);
    printf("%d", c);
    printf("%d", d);
    printf("%d", e);
    printf("%d", f);
    printf("%d", g);
    printf("%d", h);
    
    
    return 0;
}