#include <stdio.h>
+#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
double c = y0;
double xmax = (ym1 - y1) / (2.0 * (y1 + ym1 - 2.0 * y0));
- double ymax = 20.0 * (a * xmax * xmax + b * xmax + c) - 80.0;
+ double ymax = 20.0 * (a * xmax * xmax + b * xmax + c) - 70.0;
return std::make_pair(xmax, ymax);
}