题目1464：Hello World for U

#include <stdio.h>#include<string.h>const int MAX=100;  int main(){    int n1,n2,n3,i,j;    char str[MAX];     while(scanf("%s",str)!=EOF){        int len=strlen(str);        if(len%3!=0){            n1=len/3+1;            n3=len/3+1;            n2=len+2-n1*2;        }        else{            n1=len/3;            n3=len/3;            n2=len+2-n1-n3;        }        for(i=0;i<n1-1;i++){            printf("%c",str[i]);            for(j=0;j<n2-2;j++)                printf(" ");            printf("%c\n",str[len-1-i]);        }        for(i=n1-1;i<n1+n2-1;i++)            printf("%c",str[i]);        printf("\n");    }       return 0;}