# include & ltstdio.h & gt
Use namespace std
int panduan(char *s)
{
int i，flag = true
//Because we know that 32 is an integer, sometimes the parameter can be a constant (such as I
for(I = 0； I< 16; i++)
{
If (s[i]! =s[3 1-i])
{
flag = false
Break; //If the asymmetry is known, the loop can exit early.
}
}
Return flag;
}
int main()
{
int a；
int counter = 0；
//CIN & gt； & gta and scanf ("%d ",&; A)! =EOF is different
//When a=- 1, the former will think it is the end of the file, while the latter will not.
While(scanf("%d ",&a)! = EOF)
{
char s[32]；
for(int I = 0； I & lt32; i++)
{
s[I]= a % 2； //Use a&; 1 is better because bit operations are faster than modulo operations.
a & gt& gt= 1; //a=a/2 cannot be used here. If a is negative, the division operation will not move the sign bit 1.
}
if(panduan(s)== 1)
counter++；
}
Cout & lt& lt counter & lt& ltendl
Returns 0;
}