Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:24:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p + 1 == g[nod].size()) { ~~~~~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:84:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&n,&m); ^ main.cpp:87:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&k); ^ main.cpp:90:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&x); ^ main.cpp:111:41: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d %d " ,&x,&y,&t); ^