bubblesort2.cpp: In function 'std::vector<long long int> countScans(std::vector<long long int>, std::vector<long long int>, std::vector<long long int>)':
bubblesort2.cpp:12:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
12 | for(int i=0;i<x.size();i++){
| ~^~~~~~~~~
/usr/bin/ld: /tmp/ccXBYdpE.o: in function `main':
grader.cpp:(.text.startup+0x19f): undefined reference to `countScans(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