#include <stdio.h>
int main(void) {
double x[5],y[5];
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7Cglkb3VibGUgeFs1XSx5WzVdOwoJcHJpbnRmKCIlcFxuIiwmeFswXSk7CglwcmludGYoIiVwXG4iLCZ4WzZdKTsKCXByaW50ZigiJXBcbiIsJnlbMF0pOwoJcHJpbnRmKCIlcFxuIiwmeVsxXSk7CglyZXR1cm4gMDsKfQo=