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