how to initialize 3d vector in c++ code example

Example 1: initialize 3d vector c++

vector<vector<vector<double>>> f(3, vector<vector<double>>(4, vector<double>(5)));

Example 2: howt o initialize 3d vector in c++

vector<vector<vector<int>>> dp(n+1,vector<vector<int>>(n+1,vector<int>(n+1,-1)));