foo.cc: In function 'int isCan(int)':
foo.cc:14:12: warning: array subscript is above array bounds [-Warray-bounds]
   if(x==s[5])
         ~~~^
foo.cc: In function 'int main()':
foo.cc:14:12: warning: array subscript is above array bounds [-Warray-bounds]
   if(x==s[5])
         ~~~^

[Hydro](https://hydro.ac)提供评测服务