View Compilation Error

0_0_5007724_7544.cpp: In function `int main()':
0_0_5007724_7544.cpp:49: error: `py' undeclared (first use this function)
0_0_5007724_7544.cpp:49: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5007724_7544.cpp: In function `void preprocess()':
0_0_5007724_7544.cpp:66: error: `py' undeclared (first use this function)
0_0_5007724_7544.cpp: In function `double solveCPP(int, int, Point*, int)':
0_0_5007724_7544.cpp:84: error: declaration does not declare anything
0_0_5007724_7544.cpp:90: error: `sl' undeclared (first use this function)
0_0_5007724_7544.cpp:92: error: `sr' undeclared (first use this function)
0_0_5007724_7544.cpp:98: error: `yp' undeclared (first use this function)