Compilare: user.cpp: In function ‘int main()’: user.cpp:12:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d",&n,&d,&k); ^ user.cpp:25:29: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(g,"%lld",a[s][p]); ^ user.cpp:25:29: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized]