//#include <bits/stdc++.h>

#include <iostream>
#include <algorithm>

#include <bitset>
#include <vector>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <stack>
#include <queue>
#include <deque>
#include <cstring>
#include <string>
#include <utility>
#include <array>
#include <complex>
#include <valarray>

#include <cassert>
#include <cmath>
#include <functional>
#include <iomanip>
#include <chrono>
#include <random>
#include <numeric>

#include<memory>


using namespace std;
  #define int long long

typedef long long ll;
typedef unsigned long long ull;
//typedef unsigned __int128 HASH;
typedef pair<int,int> pii;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pullull;
typedef pair<ll,int> plli;
typedef pair<double,int> pdi;
typedef pair<long double, int> pdbi;
typedef pair<int,pii> pipii;
typedef pair<ll,pll> plpll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<vi> vvi;
typedef vector<vvi> vvvi;
typedef vector<pii> vpii;
typedef vector<vector<int>> mat;

#define rep(i,n) for (int i=0;i<(n);i++)
#define rep2(i,a,b) for (int i=(a);i<(b);i++)
#define rrep(i,n) for (int i=(n);i>0;i--)
#define rrep2(i,a,b) for (int i=(a);i>b;i--)
#define pb push_back
#define fi first
#define se second
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()

const ll hmod1 = 999999937;
const ll hmod2 = 1000000000 + 9;
const int INF = 1<<30;
const ll INFLL = 1LL<<62;
const long double EPS = 1e-12;
const ll mod = 1000000000 + 7;
//const ll mod = 998244353;
const int dx4[4] = {1, 0, -1, 0};
const int dy4[4] = {0, 1, 0, -1};
const int dx8[8] = {1, 1, 1, 0, 0, -1, -1, -1};
const int dy8[8] = {0, 1, -1, 1, -1, 0, 1, -1};
const long double pi = 3.141592653589793;

#define addm(X, Y) (X) = ((X) + ((Y) % mod) + mod) % mod
#define inside(y, x, h, w) (0 <= (y) && (y) < (h) && 0 <= (x) && (x) < (w)) ? true : false

//debug
#define DEBUG

#define DUMPOUT cerr

#ifdef DEBUG
#define dump(...) DUMPOUT<<#__VA_ARGS__<<" :["<<__FUNCTION__<<":"<<__LINE__<<"]"<<endl; DUMPOUT<<"    "; dump_func(__VA_ARGS__)
#else
#define dump(...)
#endif

void dump_func() {DUMPOUT << endl;};

template <class Head, class... Tail> void dump_func(Head&& head, Tail&&... tail) {
    DUMPOUT << head;
    if (sizeof...(Tail) == 0) DUMPOUT << " ";
    else DUMPOUT << ", ";
    dump_func(std::move(tail)...);
}

//ostream
template<typename T> ostream& operator << (ostream& os, vector<T>& vec) {
    os << "["; for (int i = 0; i<vec.size(); i++) os << vec[i] << (i + 1 == vec.size() ? "" : ", "); os << "]";
    return os;
}

template<typename T, typename U> ostream& operator << (ostream& os, pair<T, U>& pair_var) {
    os << "(" << pair_var.first << ", " << pair_var.second << ")";
    return os;
}

template<typename T, typename U> ostream& operator << (ostream& os, map<T, U>& map_var) {
    os << "[";
    for (auto itr = map_var.begin(); itr != map_var.end(); itr++) {
        os << "(" << itr->first << ", " << itr->second << ")"; itr++;  if(itr != map_var.end()) os << ", "; itr--;
    }
    os << "]";
    return os;
}

template<typename T> ostream& operator << (ostream& os, set<T>& set_var) {
    os << "[";
    for (auto itr = set_var.begin(); itr != set_var.end(); itr++) {
        os << *itr; ++itr; if(itr != set_var.end()) os << ", "; itr--;
    }
    os << "]";
    return os;
}


signed main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  while (true) {
    int M, T, P, R;
    cin >> M >> T >> P >> R;
    if (M == 0) break;
    vector<vector<int>> AC(T, vector<int>(P, -1));
    vector<int> cntAC(T, 0);
    vector<vector<int>> pena(T, vector<int>(P, 0));
    rep(i, R) {
      int m, t, p, j;
      cin >> m >> t >> p >> j;
      t--;p--;
      if (j == 0) {
        if (AC[t][p] == -1) {
          cntAC[t]++;
          AC[t][p] = m + 20LL * pena[t][p];
        }
      }
      else {
        pena[t][p]++;
      }
    }
    vector<pair<int, pii>> ans;
    rep(i, T) {
      int sum = 0;
      rep(j, P) {
        if (AC[i][j] == -1) continue;
        sum += AC[i][j];
      }
      ans.push_back({cntAC[i], {-sum, i}});
    }
    sort(rall(ans));
    bool checked[T] = {};
    string order = "";
    //rep(i, T) cerr << ans[i].se.se << " " << ans[i].fi <<  " " << ans[i].se.fi << endl;
    rep(i, T) {
      if (checked[i]) continue;
      int cnt = ans[i].fi;
      int tm = ans[i].se.fi;
      int idx = ans[i].se.se;
      checked[i] = true;
      order += ',';
      order += to_string(idx+1);
      //cout << "," << idx << endl;
      rep2(j, i+1, T) {
        if (cnt == ans[j].fi && tm == ans[j].se.fi) {
          order += '=';
          order += to_string(ans[j].se.se+1);
          checked[j] = true;
        }
        else break;
      }
    }
    rep2(i, 1, order.size()) cout << order[i];
    cout << endl;
  }
}



Measured memory_bytes: 3264