#include <iostream>
#include <string>
#include <sstream>
using namespace std;
int main()
{
string str;
string str1;
int result = 0;
getline(cin,str);
int a;
stringstream ss;
ss<<hex<<str; //以16进制读入流中
ss>>a; //10进制int型输出
cout<<a<<endl;
return 0;
}
#include <string>
#include <sstream>
using namespace std;
int main()
{
string str;
string str1;
int result = 0;
getline(cin,str);
int a;
stringstream ss;
ss<<hex<<str; //以16进制读入流中
ss>>a; //10进制int型输出
cout<<a<<endl;
return 0;
}