#include<stdio.h>
#include<string.h>
#include<ctype.h>
int main()
{
    char s[100];
    int i,length=0;
    fgets(s,sizeof(s),stdin);
    s[strcspn(s,"\n")]='\0';
    i=strlen(s)-1;
    while(i>=0&&sentence[i]==' ');
    i--;
}
while(i>=0&&sentence[i]==' ')
{
length++;
i--;
}
printf("6");
return 0;
}