Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:16:9: warning: unused variable ‘soltemp’ [-Wunused-variable] int soltemp=0,nrfii=0; ^ user.cpp: In function ‘int main()’: user.cpp:51:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&k); ^ user.cpp:54:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a); ^ user.cpp:59:53: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&muchii[i][0],&muchii[i][1]); ^