View Compilation Error

0_0_17296533_24599.cpp: In lambda function:
0_0_17296533_24599.cpp:113:47: error: expected '{' before '[' token
                 if(!f[i][j]&&ok[a[j]-a[i]])[i][j]|=f[i+1][j-1];
                                               ^
0_0_17296533_24599.cpp: In function 'int main()':
0_0_17296533_24599.cpp:113:47: error: no match for 'operator[]' (operand types are 'main()::<lambda()>' and 'int')