memory.cpp: In function 'void init()':
memory.cpp:6:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
6 | freopen("input.in", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
memory.cpp:7:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
7 | freopen("output.txt", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccTjMDES.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc9fODeW.o:memory.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccTjMDES.o: in function `main':
grader.cpp:(.text.startup+0x2f): undefined reference to `play()'
collect2: error: ld returned 1 exit status