Eroare de compilare: In file included from /usr/include/c++/4.8/cmath:44:0, from /usr/include/c++/4.8/random:38, from /usr/include/c++/4.8/bits/stl_algo.h:65, from /usr/include/c++/4.8/algorithm:62, from user.cpp:1: user.cpp:36:19: error: expected unqualified-id before numeric constant const long double M_PI = acos(-(long double)1.0); ^ user.cpp:37:19: error: expected unqualified-id before numeric constant const long double M_E = exp((long double)1.0); ^ user.cpp: In function ‘int main()’: user.cpp:56:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(inputFile.c_str(), "r", stdin); ^ user.cpp:57:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(outputFile.c_str(), "w", stdout); ^ user.cpp:60:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld", &N, &K, &P); ^