Compilare: user.cpp: In function ‘long int maxl(unsigned int, long int, unsigned int)’: user.cpp:18:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dmax[x]>max) ^ user.cpp:21:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[x].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:35:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%u%u%u",&p,&n,&m); ^ user.cpp:37:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%u",&dmax[i]); ^ user.cpp:40:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%u%u%u",&x,&y,&l); ^