#include<iostream> #include<cstdio> #include<string> using namespace std; int main(){ string number; while(getline(cin,number)){ int resultant=0; int index; for(int i=2;i<number.size();++i){ resultant=number[i]<='9'?(resultant*16+number[i]-'0'):(resultant*16+number[i]-'A'+10); } printf("%d\n",resultant); } return 0; }