ricehub.cpp: In function 'bool Can(long long int)':
ricehub.cpp:22:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
22 | ll o = i + j >> 1;
| ~~^~~
ricehub.cpp: In function 'long long int besthub(int, int, int, int*)':
ricehub.cpp:39:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
39 | ll mid = l + r >> 1;
| ~~^~~
/usr/bin/ld: /tmp/ccxOZBNx.o: in function `main':
grader.cpp:(.text.startup+0xae): undefined reference to `besthub(int, int, int*, long long)'
collect2: error: ld returned 1 exit status