#include<stdio.h>
int main(){
    int score1, score2, score3;
    scanf("%d %d %d", &score1, &score2, &score3);
    if(score1 == score2 == &&  score2 == score3){
        printf("Invalid input\n");
    }else {
        if(score1 >= score2 && score1 >= score3){
            printf("%d", score1);
        } else if(score2 >= score1 && score2 >= score3){
            printf("%d", score2);
        } else {
            printf("%d", score3);
        }
        return 0;
    }
}