hello friends

Is there any way or stl trick to convert vector to vector but there should'nt be any equal elements eg)

[[1,1,6],[1,2,5],[1,2,5],[1,7],[1,7],[2,6]]

to

[[1,1,6],[1,2,5],[1,7],[2,6]]

for vector there exist a std::unique but for this case what to do :)