Compilare: main.cpp: In function 'int dfs(int)': main.cpp:21:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:30:22: warning: spurious trailing '%' in format [-Wformat=] fscanf(fin,"%d%",&n); ^ main.cpp:29:19: warning: unused variable 'j' [-Wunused-variable] int n,a,b,i,MAX,j; ^ main.cpp:30:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%",&n); ^ main.cpp:32:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i]); ^ main.cpp:35:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&a,&b); ^