Eroare de compilare: user.cpp: In function ‘bool lee(int, int, int, int, int)’: user.cpp:40:59: error: ‘abs’ was not declared in this scope pq.push(((long long)(sl * 2048 + sc) << 32) + abs(sl - el) + abs(sc - ec)); ^ user.cpp: In function ‘int main()’: user.cpp:70:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &t); ^ user.cpp:74:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d\n", &n, &m); ^ user.cpp:78:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s\n", &s[0]); ^