# mode: compile
__doc__ = u"""
>>> main()
3.14159265358979323846
3.14159265358979323846
3.14159265358979323846
"""
cdef extern from "math.h":
double M_PI
#cdef unsigned long int n1
#n1 = 4293858116
cdef double pi
pi = 3.14159265358979323846
def main():
#print n1
print "%.18f" % M_PI
print "%.18f" % (<float> M_PI)
print "%.18f" % pi