View Compilation Error

0_0_33553207_21119.cpp: In function 'int main()':
0_0_33553207_21119.cpp:41:47: error: invalid types 'int[int]' for array subscript
                     if(nt[d[i-1][j-1][t[i]-'a']!=n+1&&nt[d[i-1][j-1]][t[i]-'a']<=r){//从d[i-1][j-1]转移
                                               ^
0_0_33553207_21119.cpp:41:83: error: expected ']' before ')' token
                     if(nt[d[i-1][j-1][t[i]-'a']!=n+1&&nt[d[i-1][j-1]][t[i]-'a']<=r){//从d[i-1][j-1]转移
                                                                                   ^