Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"sort"
	"strconv"
	"strings"
)

func main() {
	io := NewIo()
	defer io.Flush()
	for {
		M, T, P, R := io.NextInt(), io.NextInt(), io.NextInt(), io.NextInt()
		if M == 0 {
			break
		}
		score := make([]struct{ num, time, index int }, T)
		submit := make([][]int, T)
		for i := 0; i < T; i++ {
			score[i].index = i + 1
			submit[i] = make([]int, P)
		}

		for i := 0; i < R; i++ {
			m, t, p, j := io.NextInt(), io.NextInt()-1, io.NextInt()-1, io.NextInt()
			if j == 0 {
				score[t].num++
				score[t].time += submit[t][p]*20 + m
			} else {
				submit[t][p]++
			}
		}
		sort.SliceStable(score, func(i, j int) bool {
			return score[i].num < score[j].num || score[i].num == score[j].num && score[i].time > score[j].time
		})

		for i := T - 1; i > 0; i-- {
			io.Printf("%d", score[i].index)
			if score[i].num == score[i-1].num && score[i].time == score[i-1].time {
				io.Printf("=")
			} else {
				io.Printf(",")
			}
		}
		io.Println(score[0].index)
	}
}

// I/O template
type Io struct {
	reader    *bufio.Reader
	writer    *bufio.Writer
	tokens    []string
	nextToken int
}

func NewIo() *Io {
	return &Io{
		reader: bufio.NewReader(os.Stdin),
		writer: bufio.NewWriter(os.Stdout),
	}
}

func (io *Io) Flush() {
	err := io.writer.Flush()
	if err != nil {
		panic(err)
	}
}

func (io *Io) NextLine() string {
	var buff []byte
	for {
		line, isPrefix, err := io.reader.ReadLine()
		if err != nil {
			panic(err)
		}
		buff = append(buff, line...)
		if !isPrefix {
			break
		}
	}
	return string(buff)
}

func (io *Io) Next() string {
	for io.nextToken >= len(io.tokens) {
		line := io.NextLine()
		io.tokens = strings.Fields(line)
		io.nextToken = 0
	}
	s := io.tokens[io.nextToken]
	io.nextToken++
	return s
}

func (io *Io) NextInt() int {
	i, err := strconv.Atoi(io.Next())
	if err != nil {
		panic(err)
	}
	return i
}

func (io *Io) NextFloat() float64 {
	i, err := strconv.ParseFloat(io.Next(), 64)
	if err != nil {
		panic(err)
	}
	return i
}

func (io *Io) Println(a ...interface{}) {
	fmt.Fprintln(io.writer, a...)
}

func (io *Io) Printf(format string, a ...interface{}) {
	fmt.Fprintf(io.writer, format, a...)
}

func (io *Io) PrintIntSlice(a []int) {
	b := []interface{}{}
	for _, x := range a {
		b = append(b, x)
	}
	io.Println(b...)
}

func (io *Io) PrintStringSlice(a []string) {
	b := []interface{}{}
	for _, x := range a {
		b = append(b, x)
	}
	io.Println(b...)
}

func Log(name string, value interface{}) {
	fmt.Fprintf(os.Stderr, "%s=%+v\n", name, value)
}

func ExampleIo() {
	io := NewIo()
	defer io.Flush()
	a := make([]int, 0, 3)
	a[0], a[1], a[2] = io.NextInt(), io.NextInt(), io.NextInt()
	io.Println(a)
	io.PrintIntSlice(a)
	Log("io", a)
}

C++: #include <iostream>
#define N 2002
using namespace std;
struct team{
  int tnum;
  int correct;
  int time;
};
int main(){
  int m,t,p,r,im[N],it[N],ip[N],ij[N],incorrect,i,j;
  struct team data[51];
  while(1){
    cin >> m >> t >> p >> r;
    if(m==0&&t==0&&p==0&&r==0) break;
    for(i=0;i<r;i++) cin >> im[i] >> it[i] >> ip[i] >> ij[i];
    for(i=1;i<=t;i++){
      data[i].tnum=i;
      data[i].correct=0;
      data[i].time=0;
    }
    for(i=0;i<r;i++){
      if(ij[i]==0){
	data[it[i]].correct++;
      	incorrect=0;
	for(j=0;j<i;j++){
	  if(it[i]==it[j]&&ip[i]==ip[j]) incorrect++;
	}
	data[it[i]].time=data[it[i]].time+incorrect*20+im[i];
      }
    }
    // for(i=1;i<=t;i++) cout << "team=" << i << "time=" << data[i].time << endl;
    for(i=0;i<=t;i++){
      for(j=2;j<=t;j++){
	if(data[j].tnum>data[j-1].tnum) swap(data[j],data[j-1]);
      }
    }
    for(i=0;i<=t;i++){
      for(j=2;j<=t;j++){
	if(data[j].time<data[j-1].time) swap(data[j],data[j-1]);
      }
    }
    for(i=0;i<=t;i++){
      for(j=2;j<=t;j++){
	if(data[j].correct>data[j-1].correct) swap(data[j],data[j-1]);
      }
    }
    for(i=1;i<t;i++){
      cout << data[i].tnum;
      if(data[i].correct==data[i+1].correct&&data[i].time==data[i+1].time)
	cout << '=';
      else cout << ',';
      if(i==t-1) cout << data[i+1].tnum;
    }
    cout << endl;
  }
  return 0;
}

C++: // clang-format off
#include <bits/stdc++.h>
#define int long long
#define main signed main()
// #define main int main()
#define loop(i, a, n) for (int i = (a); i < (n); i++)
#define rep(i, n) loop(i, 0, n)
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()
#define prec(n) fixed << setprecision(n)
#define stlice(from, to) substr(from, (to) - (from) + 1)
#define pb push_back
#define mp make_pair
#define mt make_tuple
#define fi first
#define se second
using namespace std;
using pii = pair<int, int>;
using vi = vector<int>;
using vd = vector<double>;
using vc = vector<char>;
using vb = vector<bool>;
using vs = vector<string>;
using vpii = vector<pii>;
using vvi = vector<vi>;
using vvb = vector<vb>;
using vvpii = vector<vpii>;
template<typename A> using fn = function<A>;
constexpr int INF = sizeof(int) == sizeof(long long) ? 1000000000000000000LL : 1000000000;
constexpr int MOD = 1000000007;
constexpr double PI = acos(-1);
template<typename A, typename B> bool cmin(A &a, const B &b) { return a > b ? (a = b, true) : false; }
template<typename A, typename B> bool cmax(A &a, const B &b) { return a < b ? (a = b, true) : false; }
constexpr bool odd(const int &n) { return n & 1; }
constexpr bool even(const int &n) { return !odd(n); }
void solve();
main { solve(); return 0; }
// clang-format on

struct probst {
  int failed  = 0;
  int time    = 0;
  bool solved = 0;
};

void solve() {
  int M, T, P, R;
  while (cin >> M >> T >> P >> R, M) {
    using vps = vector<probst>;
    vector<vps> v(T, vps(P));
    while (R--) {
      int m, t, p, j;
      cin >> m >> t >> p >> j;
      t--;
      p--;
      probst ps = v[t][p];
      ps.solved |= !j;
      ps.failed += !!j;
      ps.time = ps.solved ? m : ps.time;
      v[t][p] = ps;
    }
    vpii w(v.size());
    rep(i, v.size()) {
      int s = 0;
      rep(j, P) {
        probst ps = v[i][j];
        if (ps.solved) {
          s += 50000 - ps.time - ps.failed * 20;
        }
      }
      w[i].fi = s;
      w[i].se = i + 1;
    }
    sort(rall(w), [](pii a, pii b) {
      if (a.fi < b.fi) return true;
      if (a.fi > b.fi) return false;
      if (a.se < b.se) return true;
      if (a.se > b.se) return false;
    });
    cout << w[0].se;
    loop(i, 1, w.size()) {
      cout << (w[i].fi == w[i - 1].fi ? '=' : ',');
      cout << w[i].se;
    }
    cout << endl;
  }
}