#include"stdio.h"#include"string.h"const long long ma = 2000000;long long num[ma],nn[ma];bool huiwen(long long n){
char str[10];
long long len,i,k = 0;
while (n)
{
str[k++] = n%10 + '0';
n /= 10;
}
for (i = 0; i < k/2; i ++)
{
if(str != str[k - i - 1])ret...
