Compilare: main.cpp: In function 'void dfs(int, int, int, bool&)': main.cpp:124:11: warning: variable 'it' set but not used [-Wunused-but-set-variable] for(auto it:aint[nod]){ ^~ main.cpp: In function 'int main()': main.cpp:136:19: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&t); ^ main.cpp:143:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ main.cpp:146:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[i]); ^ main.cpp:150:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&b[i]); ^ main.cpp:159:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&x,&y); ^