1031 Hello World for U (20分)

 1 #include <iostream>
 2 #include <cstdio>
 3 using namespace std;
 4 int main()
 5 {
 6     string s;
 7     cin >> s;
 8     int N = s.size();
 9     int n1=(N+2)/3, n3 = (N+2)/3;
10     int n2 = N + 2 - n1 - n3;
11     for(int i = 0; i<n1; ++i)
12     {
13         if(i == n1-1)
14             for(int j = i; j<n1+n2-1; ++j)
15                 printf("%c",s[j]);
16         else
17         {
18             printf("%c",s[i]);
19             for(int j = 0; j<n2-2; ++j)
20                 printf(" ");
21             printf("%c",s[N-i-1]);
22         }
23         printf("\n");
24     }
25     return 0;
26 }