Compilare: user.cpp: In function ‘int getWays(int, int)’: user.cpp:27:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < adjPrev[Node].size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:43:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d", &N, &M, &K); ^ user.cpp:45:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d", &a, &b, &c); ^