Compile Error
foo.cc: In function 'int main()': foo.cc:35:9: error: 'cn' was not declared in this scope; did you mean 'n'? 35 | cn>>a[i]; | ^~ | n
Found 10 testcases. [Hydro](https://hydro.ac)提供评测服务
foo.cc: In function 'int main()': foo.cc:35:9: error: 'cn' was not declared in this scope; did you mean 'n'? 35 | cn>>a[i]; | ^~ | n
Found 10 testcases. [Hydro](https://hydro.ac)提供评测服务