Compilare: main.cpp:7:0: warning: ignoring #pragma warning [-Wunknown-pragmas] #pragma warning(disable:4996) main.cpp: In function 'bool ok(int)': main.cpp:74:25: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses] int new_mask = mask ^ (1 << i) | (1 << ant); ~~~~~^~~~~~~~~~ main.cpp: In member function 'char InParser::read()': main.cpp:18:29: 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); ^