paint.cpp: In function 'long long int minimumInstructions(long long int, long long int, long long int, long long int*, long long int*, std::vector<long long int>*)':
paint.cpp:28:11: warning: unused variable 'j' [-Wunused-variable]
28 | ll i, j;
| ^
/usr/bin/ld: /tmp/ccEJ4YTi.o: in function `main':
grader.cpp:(.text.startup+0x392): undefined reference to `minimumInstructions(int, int, int, std::vector<int, std::allocator<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