Compilare: user.cpp: In function 'void iofile()': user.cpp:38: warning: format '%d' expects type 'int*', but argument 2 has type 'long long int*' user.cpp: In function 'int main()': user.cpp:88: warning: format '%d' expects type 'int', but argument 2 has type 'long long int' user.cpp: In function 'long long int solve()': user.cpp:78: warning: control reaches end of non-void function