#include <iostream>
#include <string>
#include <cstring>
#include <vector>
#include <cmath>
#define M_PI 3.14159265358979323846
using namespace std;

double cFloatToD(string cfloat){
    int pos = string::npos;
    while((pos = cfloat.find(",")) != string::npos){
        cfloat.replace(pos, 1, ".");
    }
    return atof(cfloat.c_str());
}

vector<string>* tokenize(vector<string>* intok, string str){
    intok->clear();
    char *pch = new char[str.length()];
    for (int i=0; i<str.length(); i++)
        pch[i] = str.c_str()[i];
    pch[str.length()-1] = 0;
    pch = strtok(pch,";");
    while (pch != NULL){
        intok->push_back(pch);
        pch = strtok(NULL, ";");
    }
    delete[] pch;
    return intok;
}

int main(){
    string line,MinName;    double selfx, selfy, posx, posy, distx, disty, dist, MinDist=10000;
    cin >> line;    selfx = cFloatToD(line);    selfx=(selfx/180)*M_PI;
    cin >> line;    selfy = cFloatToD(line);    selfy=(selfy/180)*M_PI;
    int n;  cin >> n;
    cin.ignore();
    for (int i=0; i<n; i++){
        getline(cin, line);
        vector<string>* tokens = new vector<string>;
        tokens = tokenize(tokens, line);
        posx = cFloatToD((*tokens)[tokens->size()-2].c_str());  posx=(posx/180)*M_PI;
        posy = cFloatToD((*tokens)[tokens->size()-1].c_str());  posy=(posy/180)*M_PI;
        distx = (posx - selfx) * cos((selfy+posy)/2);
        disty = (posy - selfy);
        dist = (pow(distx,2) + pow(disty,2)) * 6371;
        if (dist < MinDist){
            MinName = (*tokens)[1];
            MinDist = dist;
        }
    }
    cout << MinName;
    return 0;
}