运行 ID: 91437

Main.cc: In function ‘int main()’:
Main.cc:18:17: error: ‘max_element’ was not declared in this scope
     int maxn = *max_element(sum);
                 ^~~~~~~~~~~
Main.cc:18:17: note: suggested alternative: ‘max_align_t’
     int maxn = *max_element(sum);
                 ^~~~~~~~~~~
                 max_align_t