int n;
cin << n;
int verseNumber = 2*n-1;
int maxPrespaces = n-1;
int width = n+2*(n-1);
for(int verse = 0; verse<verseNumber; verse++){

    for(int prespaces = abs(maxPrespaces-verse); prespaces>0; prespaces-- ){
        for(int i = 0; i< prespaces; i++) cout << " ";
    }

    if(verse == 0 || verse == (verseNumber-1)){ //góra i dół
        for(int top = n; top>0; top--){
            cout << "#";
        }
    }

    else{
        cout << "#";
        for(int middleSpaces = n; middleSpaces <= (width-2); middleSpaces++){ //dwa # po bokach zawsze sa
            for(int i = 0; i<middleSpaces; i++) cout << " ";
        }
        for(int middleSpaces = (width-2-1); middleSpaces >= n; middleSpaces++){ //dwa # po bokach zawsze sa
            for(int i = 0; i<middleSpaces; i++) cout << " ";
        }
        cout << "#";
    }

    cout << endl;
}