Compilare: user.cpp: In function ‘int main()’: user.cpp:47:27: warning: unknown conversion type character 0xa in format [-Wformat=] fprintf(out, "%ll\n", ans); ^ user.cpp:47:27: warning: too many arguments for format [-Wformat-extra-args] user.cpp:17:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &n, &m); ^ user.cpp:24:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", nr+i); ^