#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define mp make_pair
#define all(a) a.begin(),a.end()
#define sz(a) (int)(a.size())
#define lb lower_bound
#define ub upper_bound
#define owo ios_base::sync_with_stdio(0);cin.tie(0);
#define debug(...) fprintf(stderr, __VA_ARGS__),fflush(stderr)
#define time__(d) for(long blockTime = 0; (blockTime == 0 ? (blockTime=clock()) != 0 : false);\
debug("%s time : %.4fs\n", d, (double)(clock() - blockTime) / CLOCKS_PER_SEC))
typedef long long int ll;
typedef long double ld;
typedef pair<ll,ll> PII;
typedef pair<int,int> pii;
typedef vector<vector<int>> vii;
typedef vector<vector<ll>> VII;
ll gcd(ll A,ll B) {if(!B)return A;return gcd(B,A%B);}
const ll INF = 1e18;
struct flowedge{
int v,u;
ll flow = 0,cap = 0;
flowedge(int _v,int _u,ll _cap){
v = _v;
u = _u;
cap = _cap;
}
};
struct dinic{
int n,m = 0,s,t;
vector<flowedge>e;
vector<int>ptr,level;
vii adj;
void add(int v,int u,ll cap){
e.pb(flowedge(v,u,cap));
e.pb(flowedge(u,v,0));
adj[v].pb(m);
adj[u].pb(++m);
m++;
}
dinic(int _n,int _s,int _t){
n = _n;
adj.resize(n);
ptr.assign(n,0);
level.assign(n,-1);
s = _s;
t = _t;
}
void bfs(){
queue<int>q;
q.push(s);
while(!q.empty()){
int v = q.front();
q.pop();
for(int x:adj[v]){
if(e[x].cap - e[x].flow && level[e[x].u] == -1){
level[e[x].u] = level[v]+1;
q.push(e[x].u);
}
}
}
}
ll dfs(int v,ll f){
if(!f)return 0;
if(v == t)return f;
for(;ptr[v]<sz(adj[v]);ptr[v]++){
int i = adj[v][ptr[v]];
if(e[i].cap - e[i].flow && level[e[i].u] == level[v] + 1){
ll mn = dfs(e[i].u,min(f,e[i].cap - e[i].flow));
//cout<<e[i].cap - e[i].flow<<" "<<mn<<'\n';
if(!mn)continue;
e[i].flow+=mn;
e[i^1].flow-=mn;
return mn;
}
}
return 0;
}
ll flow(){
ll f = 0;
while(true){
for(int i=0;i<n;i++){
ptr[i] = 0;
level[i] = -1;
}
level[s] = 0;
bfs();
//for(int i=0;i<n;i++)cout<<level[i]<<" ";
//cout<<'\n';
if(level[t] == -1)break;
while(true){
ll x = dfs(s,INF);
if(!x)break;
f+=x;
}
}
return f;
}
};
int gg[501][501];
const int MAXN = 1e6+5;
vector<int>adj[MAXN];
bool match[MAXN],vis[MAXN];
void dfs(int v){
vis[v] = 1;
for(int x:adj[v]){
if(!vis[x])dfs(x);
}
}
int main()
{
owo
int n,m;
cin>>n>>m;
vector<string>a(n);
for(int i=0;i<n;i++)cin>>a[i];
int s = 2*n*m;
int t = s+1;
dinic d(2*n*m+2,s,t);
for(int i=0;i<n;i++){
int k = -1;
for(int j=0;j<m;j++){
if(a[i][j] == '1')k = j;
else gg[i][j] = i*m+k;
d.add(s,i*m+j,1);
d.add(i*m+j + n*m,t,1);
}
}
for(int j=0;j<m;j++){
int k = -1;
for(int i=0;i<n;i++){
if(a[i][j] == '1')k = i;
else {
d.add(gg[i][j],k*m+j + n*m,1);
}
}
}
cout<<d.flow()<<'\n';
for(auto x:d.e){
int v = x.v;
int u = x.u;
if(v<n*m && u>=n*m){
if(x.flow == 1){
adj[u].pb(v);
match[u] = 1;
match[v] = 1;
}
else adj[v].pb(u);
}
}
for(int i=0;i<n*m;i++){
if(!match[i])dfs(i);
}
for(int i=0;i<n*m;i++){
if(match[i] && !vis[i]){
int x = i/m+1;
int y = i%m+1;
cout<<x<<" "<<y<<" DESNO"<<'\n';
}
}
for(int i=0;i<n*m;i++){
if(match[i+n*m] && vis[i+n*m]){
int x = i/m+1;
int y = i%m+1;
cout<<x<<" "<<y<<" DOLJE"<<'\n';
}
}
}
