IN the unordered set ,we used generally key--value in mapping but to find the subaarry equal to zero ,,we just used unordered_map<int> sumset it is true to written like that ,,,there is not necessary to have a key --value in mapping

#1

IN the unordered set ,we used generally value --pair in mapping but to find the subaarry equal to zero ,we just used unordered_map sumset it is true to written like that ,there is not necessary to have a key --value in mapping …