tournament.cpp: In function 'int main()':
tournament.cpp:53:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
53 | freopen(task ".inp", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
tournament.cpp:54:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
54 | freopen(task ".out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccxAz099.o: in function `main':
tournament.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc2YWGqa.o:grader.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cc2YWGqa.o: in function `main':
grader.cpp:(.text.startup+0x118): undefined reference to `GetBestPosition(int, int, int, int*, int*, int*)'
collect2: error: ld returned 1 exit status