Compilare: user.cpp: In function ‘int main()’: user.cpp:67:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<adjMat[node].size(); j++) ^ user.cpp:28:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFin, "%d %d", &n, &s); ^ user.cpp:40:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFin, "%d %d", &a, &b); ^