Compilare: user.cpp: In function ‘bool isColorUnlocker(int, int, std::pair<int, int>)’: user.cpp:117:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int p = 0; p < vDirections.size(); p++) ^ user.cpp: In function ‘int main()’: user.cpp:168:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &T); ^ user.cpp:178:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &N, &M, &K); ^ user.cpp:192:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &color); ^