Anna.cpp: In function 'long long int Bruno(std::vector<int>)':
Anna.cpp:10:9: warning: unused variable 'n' [-Wunused-variable]
10 | int n = (int) u.size();
| ^
/usr/bin/ld: /tmp/ccSkT4D7.o: in function `main':
grader_anna.cpp:(.text.startup+0xd2): undefined reference to `Declare()'
/usr/bin/ld: grader_anna.cpp:(.text.startup+0x1d5): undefined reference to `Anna(long long)'
collect2: error: ld returned 1 exit status
/usr/bin/ld: /tmp/ccstAUzS.o: in function `main':
grader_bruno.cpp:(.text.startup+0x3ab): undefined reference to `Bruno(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status