#include<stdio.h>
int main(){
    int a, ,b, c;
    scanf("%d %d %d", &a, &b, &c)
        return 0;
    if(a == b && b == c){
        printf("Invalid Input\n");
        return 0;
        }
        if(a >= b && b >= c){
            printf("%d\n",a);
        }
        else if(b >= a && b >= c){
            printf("%d\n",b);
        } 
        else{
          printf("%d\n",c);     
        }
        return 0;
}