View Compilation Error

0_0_30268347_30093.cpp: In function 'int main()':
0_0_30268347_30093.cpp:57:32: error: invalid types 'int[int]' for array subscript
             int invR = qpow(R[i], mod-2)%mod;
                                ^
0_0_30268347_30093.cpp:58:28: error: invalid types 'int[int]' for array subscript
             LL x = invR*S[i]%mod*A[i]%mod;
                            ^
0_0_30268347_30093.cpp:58:37: error: invalid types 'int[int]' for array subscript
             LL x = invR*S[i]%mod*A[i]%mod;
                                     ^
0_0_30268347_30093.cpp:60:30: error: invalid types 'int[int]' for array subscript
             x = (x + MOD((S[i] - R[i])*invR%mod*(sum[i-1] - sum[X[i]-1])))%mod;
                              ^
0_0_30268347_30093.cpp:60:37: error: invalid types 'int[int]' for array subscript
             x = (x + MOD((S[i] - R[i])*invR%mod*(sum[i-1] - sum[X[i]-1])))%mod;
                                     ^
0_0_30268347_30093.cpp:60:68: error: invalid types 'int[int]' for array subscript
             x = (x + MOD((S[i] - R[i])*invR%mod*(sum[i-1] - sum[X[i]-1])))%mod;
                                                                    ^