#include<iostream>
#include<cstdio>
using namespace std;
#define PI 3.14
void fun();
int main()
{
printf("%f\n",PI);
#define PI 3.141528
fun();
}
void fun()
{
printf("%f\n",PI);
}
I2luY2x1ZGU8aW9zdHJlYW0+CiNpbmNsdWRlPGNzdGRpbz4KdXNpbmcgbmFtZXNwYWNlIHN0ZDsKI2RlZmluZSBQSSAzLjE0CnZvaWQgZnVuKCk7CgppbnQgbWFpbigpCnsKcHJpbnRmKCIlZlxuIixQSSk7CiNkZWZpbmUgUEkgMy4xNDE1MjgKZnVuKCk7Cn0KCnZvaWQgZnVuKCkKewpwcmludGYoIiVmXG4iLFBJKTsKfQ==