Compilare: user.cpp: In function ‘void solve_write()’: user.cpp:34:21: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d\n", x); ^ user.cpp: In function ‘void read()’: user.cpp:27:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &a, &n); ^