#include<iostream>#include<string>#include<vector>#include<algorithm>using namespace std;struct ZD...{ string yc,ys;};vector <ZD> v;bool cmp(ZD s, ZD t)...{ return s.ys<t.ys;}string binSearch(string s) ...{ int low=0,high=v.size()-1,mid; while(low<=high) ...{ mid=(low+high)/2; if(v[mid].ys==s) return v[mid].yc; if(v[mid].ys >s) high=mid-1; else low=mid+1; } return "eh";}void init()...{ ZD t; string s; while(true) ...{ getline(cin,s); if (s=="") break; int i=s.find(" "); t.yc=s.substr(0,i); t.ys=s.substr(i+1); v.push_back(t); } sort(v.begin(),v.end(),cmp);}bool run()...{ string ts; if (!(cin>>ts)) return false; cout << binSearch(ts)<<endl; return true;}int main()...{ init(); while(run()); return 0;}