#include <iostream>
#include <vector>
using namespace std;
int main(void){
    vector<int> vt;
    vt.push_back(0);
    vt.push_back(1);
    vt.push_back(2);
    unsigned int i=0;
    while(i<vt.size()){
        cout <<vt.at(i);
        i++;
    }
    return 0;
}