#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> PII;
typedef pair<ll , ll> PLL;
typedef long double ld;

#define pb push_back
#define all(c) c.begin(),c.end()
#define allr(c) c.rbegin(),c.rend()
#define MOD 1000000007
#define PI 3.14159265
#define endl '\n'
#define MAX 501

ll arr[MAX][MAX];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n , m;
    cin >> n >> m;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cin >> arr[i][j];
        }
    }
    vector<pair<PII , PII> > vec;
    PII p;

    p.first = 1;
    p.second = 1;
    for (int i = 1; i <= n; i++) {
        if (i & 1) {
            for (int j = 1 + (i == 1); j <= m; j++) {
                int a = arr[p.first - 1][p.second - 1];
                if ((a & 1)) vec.pb({p,{i , j}}) , arr[i - 1][j - 1]++;
                p = {i , j};
            }
        }
        else {
            for (int j = m; j >= 1; j--) {
                int a = arr[p.first - 1][p.second - 1];
                if ((a & 1)) vec.pb({p ,{i , j}}) , arr[i - 1][j - 1]++;
                p = {i , j};
            }
        }
    }
    cout << vec.size() << endl;
    for (auto it : vec) {
        cout << it.first.first << " " << it.first.second << " " << it.second.first << " " << it.second.second << endl;
    }


    return 0;
}

...