Main.cc:2:1: error: ‘uaing’ does not name a type; did you mean ‘uint’? uaing namespace std; ^~~~~ uint Main.cc: In function ‘int main()’: Main.cc:6:7: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ~~~~~^~~~~~~~~ Main.cc:9:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ~~~~~^~~~~~~~~