ricehub.cpp: In function 'bool solve(long long int, long long int)':
ricehub.cpp:11:9: warning: unused variable 'rig' [-Wunused-variable]
11 | int rig=flag+res;
| ^~~
/tmp/ccnmvAfO.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccWwuONw.o:ricehub.cpp:(.text.startup+0x0): first defined here
/tmp/ccnmvAfO.o: In function `main':
grader.cpp:(.text.startup+0x9a): undefined reference to `besthub(int, int, int*, long long)'
collect2: error: ld returned 1 exit status