View Compilation Error

0_0_28985226_12623.cpp: In function 'int main()':
0_0_28985226_12623.cpp:81:45: error: cannot convert 'std::queue<_Tp, _Sequence>::size<int, std::deque<int, std::allocator<int> > >' from type 'std::queue<int>::size_type (std::queue<int>::)() const {aka long long unsigned int (std::queue<int>::)() const}' to type 'bool'
         for(int i=1;i<=mx;i++) while(stl[i].size)stl[i].pop();
                                             ^
0_0_28985226_12623.cpp:82:45: error: cannot convert 'std::queue<_Tp, _Sequence>::size<int, std::deque<int, std::allocator<int> > >' from type 'std::queue<int>::size_type (std::queue<int>::)() const {aka long long unsigned int (std::queue<int>::)() const}' to type 'bool'
         for(int i=1;i<=mx;i++) while(str[i].size)str[i].pop(); 
                                             ^