catdog.cpp: In function 'int main()':
catdog.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
30 | scanf("%d", &n);
| ~~~~~^~~~~~~~~~
catdog.cpp:33:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
33 | scanf("%d %d", &x, &y);
| ~~~~~^~~~~~~~~~~~~~~~~
catdog.cpp:39:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
39 | scanf("%d", &q);
| ~~~~~^~~~~~~~~~
catdog.cpp:42:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
42 | scanf("%d %d", &op, &x);
| ~~~~~^~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccIOqeQE.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc88feLD.o:catdog.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccIOqeQE.o: in function `main':
grader.cpp:(.text.startup+0x1f1): undefined reference to `initialize(int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
/usr/bin/ld: grader.cpp:(.text.startup+0x229): undefined reference to `neighbor(int)'
/usr/bin/ld: grader.cpp:(.text.startup+0x26d): undefined reference to `dog(int)'
/usr/bin/ld: grader.cpp:(.text.startup+0x311): undefined reference to `cat(int)'
collect2: error: ld returned 1 exit status