Borderou de evaluare (job #24272)

Eroare de compilare: user.cpp: In function ‘void solve()’: user.cpp:59:35: error: ‘memcpy’ was not declared in this scope user.cpp:74:27: error: ‘strchr’ was not declared in this scope user.cpp:197:25: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp: In function ‘int main()’: user.cpp:218:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:219:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:220:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:221:22: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]