View Compilation Error

0_0_21401360_16982.cpp: In function 'int main()':
0_0_21401360_16982.cpp:96:22: error: 'u' was not declared in this scope
       rs=(rs+i*LL(as-u.x))%4294967296LL;
                      ^
0_0_21401360_16982.cpp:100:13: error: 'sy' was not declared in this scope
         if (sy<a[ty][0]) t[++m]=ty,s[m]=sy+1,Q.push(node(u.x-a[ty][sy]+a[ty][sy+1],m));
             ^