/in/foo.cc: In function 'int main()':
/in/foo.cc:15:5: error: 't' was not declared in this scope
   g[t-1]++;
     ^
/in/foo.cc:23:9: error: 't' was not declared in this scope
         t=a[1+i+(j<<1)+k*3+(l<<2)];
         ^