/usr/bin/ld: /tmp/ccd77dRo.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccDXQCvV.o:september.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccDXQCvV.o: in function `taskcase()':
september.cpp:(.text+0x519): undefined reference to `solve(int, int, std::vector<int, std::allocator<int> >, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >)'
/usr/bin/ld: /tmp/ccd77dRo.o: in function `mtbpdhr2zxjo1o4i9oreohsbuzzl4s6u::taskcase()':
grader.cpp:(.text+0x50d): undefined reference to `solve(int, int, std::vector<int, std::allocator<int> >, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >)'
collect2: error: ld returned 1 exit status