password.cpp: In function 'void test_case()':
password.cpp:49:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
49 | if (len == 1 + c.s.size() + b.s.size()) {
| ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccB1UQSz.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc0ew05z.o:password.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccB1UQSz.o: in function `main':
grader.cpp:(.text.startup+0x66): undefined reference to `guess[abi:cxx11](int, int)'
collect2: error: ld returned 1 exit status