100644 blob 1160b51e4e7fde48b39416cdfecdd0b35b3a39b3	1.cc
040000 tree 354bb3827dd6f3802fab5260f81ea6afb44907cc	deque_iterators
040000 tree 6732fede12559893ddf4c47a2929c2984d48c870	requirements