/in/foo.cc: In function 'int main()':
/in/foo.cc:15:32: error: lvalue required as left operand of assignment
   15 |                 for(int t=0;j+k+t=10;t++)
      |                             ~~~^~
/in/foo.cc:20:42: error: 'l' was not declared in this scope
   20 |                     else if (ch[i]=='C'&&l>=1)
      |                                          ^
/in/foo.cc:30:24: error: invalid types 'int[int]' for array subscript
   30 |     cout<<f[n][0][0][0][0]<<endl;
      |                        ^