#include <iostream>
#include <string>
using namespace std;
string dots(int times, string sym = "."){
string result = "";
for (int i = 0; i < times; ++i){
result += sym;
}
return result;
}
string space( int times, string sym = " "){
string result = "";
for (int i = 0; i < times; ++i){
result += sym;
}
return result;
}
int main() {
double n;
cin>> n;
int a = (n - 0.5) * 2;
for (int i = 0; i < n; ++i){
cout<< space(i);
cout<< "\\";
cout<< dots(a);
cout<< "/" << endl;
a -= 2;
}
cout<< space(n);
cout<< "X" << endl;
int m = 1;
for (int i = n; i > 0; --i){
cout<< space(i - 1);
cout<< "/";
cout<< dots(m);
cout<< "\\" << endl;
m += 2;
}
return 0;
}
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