quality.cpp: In function 'int read()':
quality.cpp:32:27: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
32 | x = (x << 1) + (x << 3) + ch ^ 48;
| ~~~~~~~~~~~~~~~~~~~~^~~~
quality.cpp:28:13: warning: unused variable 'f' [-Wunused-variable]
28 | int x = 0, f = 1;
| ^
/usr/bin/ld: /tmp/cceSe8Me.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cclTFJXd.o:quality.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cceSe8Me.o: in function `main':
grader.cpp:(.text.startup+0xe9): undefined reference to `rectangle(int, int, int, int, int (*) [3001])'
collect2: error: ld returned 1 exit status