nile.cpp: In function 'std::vector<long long int> calculate_costs(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
nile.cpp:40:55: error: no match for call to '(__gnu_cxx::__alloc_traits<std::allocator<Artifact>, Artifact>::value_type {aka Artifact}) ()'
40 | if (abs(artifacts[l].weight - artifacts[r]()
| ~~~~~~~~~~~~^~
nile.cpp:40:57: error: expected ')' at end of input
40 | if (abs(artifacts[l].weight - artifacts[r]()
| ~ ^
| )
nile.cpp:40:57: error: expected statement at end of input
nile.cpp:40:57: error: expected '}' at end of input
nile.cpp:34:23: note: to match this '{'
34 | while (l < r) {
| ^
nile.cpp:40:57: error: expected '}' at end of input
40 | if (abs(artifacts[l].weight - artifacts[r]()
| ^
nile.cpp:27:36: note: to match this '{'
27 | for (int qi = 0; qi < Q; ++qi) {
| ^
nile.cpp:40:57: error: expected '}' at end of input
40 | if (abs(artifacts[l].weight - artifacts[r]()
| ^
nile.cpp:12:95: note: to match this '{'
12 | vector<long long> calculate_costs(vector<int> W, vector<int> A, vector<int> B, vector<int> E) {
| ^
nile.cpp:40:57: warning: no return statement in function returning non-void [-Wreturn-type]
40 | if (abs(artifacts[l].weight - artifacts[r]()
| ^