grader.cpp: In function 'int main()':
grader.cpp:28:26: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=]
28 | fprintf (fifo_out, "%d\n", ans.size ());
| ~^ ~~~~~~~~~~~
| | |
| int std::vector<int>::size_type {aka long unsigned int}
| %ld
grader.cpp:29:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
29 | for (int i=0; i<ans.size () && i < N; i++)
| ~^~~~~~~~~~~~
/usr/bin/ld: /tmp/ccBuC4sX.o: in function `isSubsequence(std::vector<int, std::allocator<int> >)':
grader.cpp:(.text+0x0): multiple definition of `isSubsequence(std::vector<int, std::allocator<int> >)'; /tmp/ccoLZJAY.o:hidden.cpp:(.text+0x0): first defined here
collect2: error: ld returned 1 exit status