Borderou de evaluare (job #163563)

Compilare: user.cpp: In function ‘void solve()’: user.cpp:30:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘void write()’: user.cpp:55:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:61:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘void read()’: user.cpp:25:22: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]