closing.cpp: In function 'int dfs(int, int, int, std::vector<int>&)':
closing.cpp:17:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
17 | for (int i = 0; i < graph[node].size(); i++) {
| ~~^~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cc3Mmsov.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccF2S4Pu.o:closing.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cc3Mmsov.o: in function `main':
grader.cpp:(.text.startup+0x6a1): undefined reference to `max_score(int, int, int, long long, 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