Compilare: user.cpp: In function ‘int main()’: user.cpp:13:44: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘int’ [-Wformat=] fprintf(g,"%lld",(n*(n+1)*(n-1)/3)%p); ^ user.cpp:16:53: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘int’ [-Wformat=] fprintf(g,"%lld",(n*(n-1)*(n-2)/3+n*(n-1))%p); ^ user.cpp:10:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&p); ^