Compilare: main.cpp: In function 'int binarySearch_aint(std::vector<std::pair<int, int> >, std::pair<int, int>, std::pair<int, int>)': main.cpp:23:34: warning: variable 'sol' set but not used [-Wunused-but-set-variable] int st = 0, dr = v.size()-2, sol = -1; ^~~ main.cpp: In function 'int binarySearch(std::pair<int, int>*, std::pair<int, int>)': main.cpp:36:25: warning: variable 'sol' set but not used [-Wunused-but-set-variable] int st = 1, dr = n, sol = 0; ^~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:88:29: 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, 4096, fin); ^