consul.cpp: In function 'void IO(std::string)':
consul.cpp:11:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
11 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
consul.cpp:11:70: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
11 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccxv6OJ3.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccehvji2.o:consul.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccehvji2.o: in function `solve(long long)':
consul.cpp:(.text+0x26d): undefined reference to `kth(long long)'
/usr/bin/ld: consul.cpp:(.text+0x27e): undefined reference to `say_answer(long long)'
/usr/bin/ld: consul.cpp:(.text+0x298): undefined reference to `say_answer(long long)'
/usr/bin/ld: /tmp/ccxv6OJ3.o: in function `main':
grader.cpp:(.text.startup+0xa8): undefined reference to `solve(int)'
collect2: error: ld returned 1 exit status