Compilare: user.cpp: In function ‘int main()’: user.cpp:13:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&p,&n); ^ user.cpp:15:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&a,&x); ^ user.cpp:19:16: warning: iteration 1000003 invokes undefined behavior [-Waggressive-loop-optimizations] if(ciur[i]==0){ ~~~~~~^ user.cpp:18:14: note: within this loop for(i=2;i<=N;i++){ ~^~~