/usr/bin/ld: /tmp/ccWVT8Se.o: in function `kth(int)':
grader.cpp:(.text+0x0): multiple definition of `kth(int)'; /tmp/cczl2umf.o:consul.cpp:(.text+0x0): first defined here
/usr/bin/ld: /tmp/ccWVT8Se.o: in function `cnt(int)':
grader.cpp:(.text+0xb0): multiple definition of `cnt(int)'; /tmp/cczl2umf.o:consul.cpp:(.text+0xb0): first defined here
/usr/bin/ld: /tmp/ccWVT8Se.o: in function `say_answer(int)':
grader.cpp:(.text+0x160): multiple definition of `say_answer(int)'; /tmp/cczl2umf.o:consul.cpp:(.text+0x160): first defined here
/usr/bin/ld: /tmp/ccWVT8Se.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cczl2umf.o:consul.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status