a1031题解

#include<cstring> 
int () {
    char S[100];
    scanf("%s", S);
    int n1, n2, n3;
 int N = strlen(S);       
 int max = 0;
    for(int i = 3; i <= N; i++) {
       n2 = i;
      for(int j = 0; j <= n2; j++) {
          n1 = j;
          n3 = j;
          if(n1 + n2 + n3 - 2 == N){
              if(j > max) {
                    max = j;
             }               
         }

       }
    } 
   n1 = max;
    n2 = N + 2 - n1 * 2;    
 n3 = max;

   //printf("%d %d %dn", n1, n2, n3);
  for(int i = 0; i < max - 1; i++) {
      printf("%c", S[i]);
        for(int j = 0; j < n2 - 2; j++) {
           printf(" ");
       }
        printf("%cn", S[N - i - 1]);
   }
    for(int i = n1 - 1; i <= n1 + n2 - 2; i++) {
        printf("%c", S[i]);
    }
    return 0;
}