Compilare: main.cpp: In function 'int solve(int, int, int, vpii&, vvi&, vvi&)': main.cpp:50:12: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (nx != curr.x) ^ main.cpp: In function 'char nextChar()': main.cpp:15:52: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] if (pos >= 4096) fread(buff, 4096, 1, f), pos = 0; ^