#include <stdio.h>
#include <math.h>
int main ()
{
float x,s;
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CiNpbmNsdWRlIDxtYXRoLmg+CmludCBtYWluICgpCnsKICBmbG9hdCB4LHM7CiAgcHJpbnRmKCJcbiDQktCy0LXQtNC40YLQtSDRh9C40YHQu9C+IHgiKTsKICBzY2FuZigiJWYiLCAmeCk7CiAgcz0oYWJzKHgpKzgpLyhwb3coeCwzKSsxOCk7CiAgcHJpbnRmKCJcbiDQntGC0LLQtdGCOiAlZiIsIHMpOwogIHByaW50ZigiXG4g0JLQstC10LTQuNGC0LUg0YfQuNGB0LvQviB4Iik7CiAgcmV0dXJuIDA7Cn0=