Compilare: user.cpp: In function ‘void calcd(int)’: user.cpp:26:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();++i) ^ user.cpp:38:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<level[nivv].size();++i) ^ user.cpp:42:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<level[i].size();++j) ^ user.cpp:46:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int p=0;p<g[it].size();++p) ^ user.cpp: In function ‘int main()’: user.cpp:60:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i",&n,&k); ^ user.cpp:66:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i",&a[i].first); ^ user.cpp:80:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i",&t[i].first); ^