#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N=1550;
const double eps=1e-5;
const int mod=998244353;
#define endl '\n'

ll ksm(ll a,ll b,ll p=mod){ll res=1;for(;b;b>>=1,a=a*a%p){if(b&1)res=a*res%p;}return res;}

int r[N][N],l[N][N];

bool dfs(int x1,int y1,int x2,int y2){
    // cout<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<endl;
    int ff=0;
    for(int i=x1;i<x2;i++){
        int f=0;
        for(int j=y1;j<=y2;j++){
            if(r[i][j]==0)f=1;
            ff|=(r[i][j]==1);
        }
        if(!f){
            // cout<<"-- "<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<endl;
            return dfs(x1,y1,i,y2)&dfs(i+1,y1,x2,y2);
        }
    }
    for(int i=y1;i<y2;i++){
        int f=0;
        for(int j=x1;j<=x2;j++){
            f|=l[j][i]==0;
            ff|=(l[j][i]==1);
            // cout<<l[j][i]<<" "<<j<<" "<<i<<endl;
        }
        if(!f){
        // cout<<"| "<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<endl;
            return dfs(x1,y1,x2,i)&dfs(x1,i+1,x2,y2);
        }
    }
    if(!ff){
        // cout<<"ok "<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<endl;
        return 1;
    }
    // cout<<"bad "<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<endl;
    return 0;
}


int main(){
    #ifdef LOCAL
    freopen("input.in","r",stdin);
    freopen("output.out","w",stdout);
    #endif
    ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
    int n,m;
    cin>>n>>m;
    for(int i=1;i<n;i++){
        string s;
        cin>>s;
        for(int j=1;j<=m;j++){
            r[i][j]=(s[j-1]=='1');
        }

    }
    for(int i=1;i<=n;i++){
        string s;
        cin>>s;
        for(int j=1;j<m;j++){
            l[i][j]=s[j-1]=='1';
        }

    }
    // for(int i=1;i<=n;i++){
    //     for(int j=1;j<m;j++){
    //         cout<<l[i][j]<<" "<<i<<" "<<j<<endl;
    //     }
    // }
    if(dfs(1,1,n,m))cout<<"YES\n";
    else cout<<"NO\n";
    return 0;
}