123456789101112131415161718192021222324252627#include<vector>#include<iostream>using namespace std;int main() { vector<int> myvector(3, 100); vector<int>::iterator it; it = myvector.end(); it = myvector.insert(it, 200); myvector.insert(it, 2, 300); it = myvector.end(); std::vector<int> anothervector(2, 400); myvector.insert(it - 2, anoth