Compilare: user.cpp: In function ‘int brut()’: user.cpp:51:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,ans = 0; ^ user.cpp: In function ‘int main()’: user.cpp:80:27: 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:84:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&x); ^