Compilare: main.cpp: In function 'void dfs_aint(int, int, int)': main.cpp:69:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<aint[nod].size();i++){ ~^~~~~~~~~~~~~~~~~ main.cpp:78:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<la[st].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:82:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<lb[st].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:98:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&t); ^ main.cpp:102:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&n,&m); ^ main.cpp:105:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&a[i]); ^ main.cpp:109:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&b[i]); ^ main.cpp:113:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&x,&y); ^