#include <random>
#include <type_traits>
#include <iostream>
int main() {
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<const int> distri(1,10);
std::cout << std::is_const<decltype(distri(gen))>::value << '\n';
}
I2luY2x1ZGUgPHJhbmRvbT4KI2luY2x1ZGUgPHR5cGVfdHJhaXRzPgojaW5jbHVkZSA8aW9zdHJlYW0+CgppbnQgbWFpbigpIHsKICAgIHN0ZDo6cmFuZG9tX2RldmljZSByZDsKICAgIHN0ZDo6bXQxOTkzNyBnZW4ocmQoKSk7CiAgICBzdGQ6OnVuaWZvcm1faW50X2Rpc3RyaWJ1dGlvbjxjb25zdCBpbnQ+IGRpc3RyaSgxLDEwKTsKICAgIHN0ZDo6Y291dCA8PCBzdGQ6OmlzX2NvbnN0PGRlY2x0eXBlKGRpc3RyaShnZW4pKT46OnZhbHVlIDw8ICdcbic7Cn0=