View Compilation Error

0_0_5937720_16811.cpp: In function `int search(int, long long int)':
0_0_5937720_16811.cpp:52: error: expected `]' at end of input
0_0_5937720_16811.cpp:52: error: no match for 'operator[]' in 'used[((+(((unsigned int)beg) * 12u)) + ((std::vector<node, std::allocator<node> >*)(&v)))->std::vector<_Tp, _Alloc>::operator[] [with _Tp = node, _Alloc = std::allocator<node>](((unsigned int)t))]'
0_0_5937720_16811.cpp:52: error: expected `)' at end of input
0_0_5937720_16811.cpp:52: error: expected primary-expression at end of input
0_0_5937720_16811.cpp:52: error: expected `;' at end of input
0_0_5937720_16811.cpp:52: error: expected `}' at end of input
0_0_5937720_16811.cpp:52: error: expected `}' at end of input