View Compilation Error

0_0_15108860_21695.cpp:16:18: error: expected initializer before ']' token
 int L[N+N],R[N+N]];
                  ^
0_0_15108860_21695.cpp: In function 'int main()':
0_0_15108860_21695.cpp:22:16: error: 'R' was not declared in this scope
         memset(R,0,sizeof(R));
                ^