Compilare: main.cpp: In function 'void rezolva(int, int, int)': main.cpp:74:31: warning: self-comparison always evaluates to true [-Wtautological-compare] if (aa[qr[i].index].u == aa[qr[i].index].u) { ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:199:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("termite.out", "w", stdout); ^ main.cpp: In member function 'char InParser::read_ch()': main.cpp:144:34: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 262144, fin); ^