#include <bits/stdc++.h>
#include <iostream>
using namespace std;

int convert(string a) {
    int out = 0;
    int counter = 1;
    
    //cout<<a<<endl;
    for (int i = a.size() - 1; i > 0; i--) {
        if(a[i] == '1' ) {
            out += counter;
            //cout<<"found one at "<< a[i] ;
        }  
        //cout<< " current index "<< i <<" at character "<<a[i]<< " counter " << counter<<" current output " << out<<endl;
        counter *= 2;
    }
    return out;

}
string convertToBase(int n, int base) {
    string out;
    return out;
}

int returnVecMax(vector<int> a) {
    int out = a[0];
    for (int i =1; i < a.size(); i++) {
        if (a[i] > out) {
            out = a[i];
        }
    }
    return out;
}

int main() {

    vector<int> test;
    test.push_back(2);
    test.push_back(6);
    test.push_back(-7);
    test.push_back(1);
    test.push_back(0);
    test.push_back(1);
    test.push_back(4);
    cout<<returnVecMax(test)<<endl<<convert("0101101");
}