Compilare: user.cpp: In function ‘unsigned int dfs(unsigned int, unsigned int, unsigned int)’: user.cpp:11:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p[x][i]!=0 && viz[i]==0 && p[x][i]<=dm) ^ user.cpp: In function ‘int main()’: user.cpp:24:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%u%u%u",&t,&n,&m); ^ user.cpp:26:33: 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:29:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%u%u%u",&a,&b,&d); ^