#include <iostream>
#include <fstream>
#include <cassert>
using namespace std;

ifstream fin("maxim5.in");
ofstream fout("maxim5.out");


int main(){
    int MaxG = 0, Max, C, cc , n , nrl = 0;
    int gata = 0;
    while(!gata){
        nrl ++;
        if(fin>>n){
            cc = 1, Max = n;
            fin >> n;
            while(n!=0){
                if(n>Max)
                    Max = n;
                cc ++;
                fin >> n;
            }
            if(nrl == 1){
                C = cc; MaxG = Max;
            }
            else
                if(cc < C){
                    C = cc; MaxG = Max;
                }
                else
                    if(cc == C)
                        if(Max > MaxG)
                            MaxG = Max;
        }
        else
            gata = 1;
    }
    fout << MaxG;
    return 0;
}