#include<stdio.h>
#include<string.h>
#include<ctype.h>
int main(){
    char name[50];
    scanf("%s",&name[50]);
    if((isdigit)){
        printf("Invalid input");
    }
    if((isalpha)){
        printf("Invalid input");
    }
    
    if(strcmp("Today is Monday")==0);
    
    printf("%d",s);
    return 0;
    
}