Compilare: user.cpp: In function ‘void Solve(std::vector<Point, std::allocator<Point> >&, int)’: user.cpp:55: warning: comparison between signed and unsigned integer expressions user.cpp:66: warning: comparison between signed and unsigned integer expressions user.cpp:72: warning: comparison between signed and unsigned integer expressions user.cpp:79: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:116: warning: comparison between signed and unsigned integer expressions user.cpp:131: warning: comparison between signed and unsigned integer expressions