cyberland.cpp: In function 'int sequence(int, std::vector<int>)':
cyberland.cpp:30:17: warning: unused variable 'occ1' [-Wunused-variable]
30 | int occ1 = m[m1], occ2=m[m2];
| ^~~~
cyberland.cpp:30:31: warning: unused variable 'occ2' [-Wunused-variable]
30 | int occ1 = m[m1], occ2=m[m2];
| ^~~~
/usr/bin/ld: /tmp/ccihmtrm.o: in function `main':
grader.cpp:(.text.startup+0x696): undefined reference to `solve(int, int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status