#include <iostream>
#include <cstring>
#include <sstream>

using namespace std;

int atoi(const char* value,int base){
stringstream strValue;
strValue << value;

unsigned int intValue;
strValue >> intValue;

int m1;
int m2;
int m3;

m1 = intValue % base;
intValue/=base;
m2 = intValue % base;
intValue/=base;
/*m3 = intValue % base;
intValue/=base; */
int szam = m1+m2*10+m3*100;

return szam;
}

int main()
{
   int x = atoi("128",2);
    cout << x << endl;

    return 0;
}