View Compilation Error

0_0_25062521_16599.cpp: In function 'int main()':
0_0_25062521_16599.cpp:61:18: error: expression cannot be used as a function
      if(q.A[q.sz()-i]<q.A[q.sz()-i-1])
                  ^
0_0_25062521_16599.cpp:61:32: error: expression cannot be used as a function
      if(q.A[q.sz()-i]<q.A[q.sz()-i-1])
                                ^
0_0_25062521_16599.cpp:62:21: error: expression cannot be used as a function
       swap(q.A[q.sz()-i],q.A[q.sz()-i-1]);
                     ^
0_0_25062521_16599.cpp:62:35: error: expression cannot be used as a function
       swap(q.A[q.sz()-i],q.A[q.sz()-i-1]);
                                   ^