boxes.cpp: In function 'long long int delivery(int, int, int, std::vector<int>)':
boxes.cpp:4:24: warning: unused parameter 'N' [-Wunused-parameter]
4 | long long delivery(int N, int K, int L, vector<int>p)
| ~~~~^
boxes.cpp:4:31: warning: unused parameter 'K' [-Wunused-parameter]
4 | long long delivery(int N, int K, int L, vector<int>p)
| ~~~~^
boxes.cpp:4:38: warning: unused parameter 'L' [-Wunused-parameter]
4 | long long delivery(int N, int K, int L, vector<int>p)
| ~~~~^
boxes.cpp:4:52: warning: unused parameter 'p' [-Wunused-parameter]
4 | long long delivery(int N, int K, int L, vector<int>p)
| ~~~~~~~~~~~^
/tmp/ccpyDvib.o: In function `main':
grader.c:(.text.startup+0x1cb): undefined reference to `delivery(int, int, int, int*)'
collect2: error: ld returned 1 exit status