foo.cc: In function ‘int main()’:
foo.cc:27:9: error: ‘Sa’ was not declared in this scope; did you mean ‘a’?
   27 |         Sa=0;
      |         ^~
      |         a
foo.cc:33:9: error: ‘Sb’ was not declared in this scope; did you mean ‘b’?
   33 |         Sb=0;
      |         ^~
      |         b

正在同步测试数据，请稍后