#include<stdio.h>
#include<string.h>
int main()
{
    char a[21];
    char b[21];
    char c[21];
    char l[100];
    int count=0;
    if(fgets(line,sizeof(line),stdin))
    count+=sscanf(line,"%20s %20s",a,b);
    if(fgets(line,sizeof(line),stdin))
    count+=sscanf(line,"%20s",c);
    if(count<3)
    {
        printf("Invalid input\n");
    }
    else
    {
        printf("%s\n%s",a,c);
    }
    return 0;
    
}