candies.cpp: In function 'std::vector<long long int> distribute_candies(std::vector<long long int>, std::vector<long long int>, std::vector<long long int>, std::vector<long long int>)':
candies.cpp:18:24: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
18 | for (ll qw = 0; qw < l.size(); qw++) {
| ~~~^~~~~~~~~~
/usr/bin/ld: /tmp/ccUEhluP.o: in function `main':
grader.cpp:(.text.startup+0x30e): undefined reference to `distribute_candies(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