Submission #62047112

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#include<bits/stdc++.h>
#define ll  long long
#define ld long double
#define pb push_back
#define gcd __gcd
#define MOD 998244353
#define MOD2 1000000007
#define inti __int128_t
#define lset 63-__builtin_clzll
#define fset __builtin_ctzll
#define stcnt __builtin_popcountll
#define pll pair<ll,ll>
using namespace std;
int main(){  
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
 
 
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#include<bits/stdc++.h>
#define ll  long long
#define ld long double
#define pb push_back
#define gcd __gcd
#define MOD 998244353
#define MOD2 1000000007
#define inti __int128_t
#define lset 63-__builtin_clzll
#define fset __builtin_ctzll
#define stcnt __builtin_popcountll
#define pll pair<ll,ll>
using namespace std;




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

ll t;
t=1;

while(t--){

    ll n,m;
    cin>>n>>m;
    vector<string>arr(n);
    for(ll i=0;i<n;i++){
        cin>>arr[i];
    }

    ll l = 1e15;
    ll r= -1;
    ll t= 1e15;;
    ll b = -1;

    for(ll i=0;i<n;i++){
        for(ll j=0;j<m;j++){
            if(arr[i][j]=='#'){
                l=min(l,i);
                t=min(t,j);
                b=max(b,j);
                r=max(r,i);
            }
        }
    }

    if(r==-1){
        cout<<"Yes"<<endl;
        continue;
    }else{
        bool sam = true;
        for(ll i=l;i<=r;i++){
            for(ll j=t;j<=b;j++){
                if(arr[i][j]=='.'){
                    sam=false;
                }
            }
        }

        if(sam)cout<<"Yes"<<endl;
        else cout<<"No"<<endl;
    }


}
}

Submission Info

Judge Result