foo.cc: In function 'int main()':
foo.cc:122:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  122 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
foo.cc: In function 'int cc(int, char, int)':
foo.cc:21:9: warning: 'z' may be used uninitialized in this function [-Wmaybe-uninitialized]
   21 |     int z;
      |         ^
foo.cc: In function 'char findjibie(char, char)':
foo.cc:62:22: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
   62 |     return jibie[x][y];
      |                      ^
foo.cc:62:22: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]

[Hydro](https://hydro.ac)提供评测服务