foo.cpp:2:1: error: 'cin' does not name a type
 cin>>DP[L1,L2,R1,R2]:=SUM[L2,R1]+A[L1]+A[R2]-MIN{DP[L1,L2+1,R1,R2],DP[L1,L2,R1-1,R2],DP[L2,L2+1,R1,R2],DP[L1,L2,R1-1,R1]}>>endl
 ^
foo.cpp:2:122: error: expected unqualified-id before '>>' token
 cin>>DP[L1,L2,R1,R2]:=SUM[L2,R1]+A[L1]+A[R2]-MIN{DP[L1,L2+1,R1,R2],DP[L1,L2,R1-1,R2],DP[L2,L2+1,R1,R2],DP[L1,L2,R1-1,R1]}>>endl
                                                                                                                          ^