encoder.cpp: In function 'int encode(int, int, int)':
encoder.cpp:23:22: warning: control reaches end of non-void function [-Wreturn-type]
23 | vector<int> v(n+1);
| ^
decoder.cpp: In function 'int encode(int, int, int)':
decoder.cpp:23:22: warning: control reaches end of non-void function [-Wreturn-type]
23 | vector<int> v(n+1);
| ^
/usr/bin/ld: /tmp/ccXMKgvr.o: in function `main':
grader_decode.c:(.text.startup+0x22f): undefined reference to `decode(int, int, int)'
collect2: error: ld returned 1 exit status