打印图案题
#include <iostream>
#include <string>
using namespace std;
void printspace(int n){
for(int i=0;i<n;i++)
cout<<" ";
}
int main()
{
string s;
int n1,n2,n3,N;
cin>>s;
N=s.length();
if((N+2)%3==0)
n2=(N+2)/3;
else if((N+2)%3==1)
n2=(N+2)/3+1;
else
n2=(N+2)/3+2;
n1=n3=(N-n2+2)/2;
for(int i=0;i<n1-1;i++){
cout<<s[i];
printspace(n2-2);
cout<<s[N-i-1];
cout<<endl;
}
for(int i=n1-1;i<n1+n2-1;i++)
cout<<s[i];
cout<<endl;
return 0;
}
