#include<stdio.h>
int main() {
    int alex,jordan,taylor;
    scanf("%d %d %d",&alex,&jordan,&taylor);
    if(alex == jordan&&jordan ==taylor){
        printf("Invalid Input";
        return 0;
    }
    if(alex>jordan&&alex>taylor)
      printf("%d",alex);
    else if(jordan > alex&&jordan > taylor)
      printf("%d",jordan);
    else
      printf("%d",taylor);
    return 0;
}