#include<stdio.h>
#include<string.h>
void main()
{
char str[100];//å®ä¹ä¸ä¸ªå符串æ°ç»
int i,n,flag=1;
scanf("%s",str);
n=strlen(str);//计ç®strå®é
é¿åº¦ï¼ä¸ç®'\0'ï¼
for(i=0;i<n/2;i++)
if(str[i]!=str[n-1-i]) {flag=0;break;} //å¦æä¸ç¬¦ååææ¡ä»¶ï¼flagèµå¼ä¸º0
if(flag) //å¦æflag=1ï¼å°±è¯´æä¸ç´ç¬¦ååææ¡ä»¶
{
printf("Yes");
}
else //å¦æflag=0ï¼å°±è¯´æè³å°æä¸å¤ä¸ç¬¦ååææ¡ä»¶
{
printf("No");
}
printf("\n");
}
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