void f1(int, int, int, int, int = 0);
void f1(int, int, int, int = 0, int);
void f1(int, int, int = 0, int, int);
void f1(int = 0, int, int, int, int);
void f2(int, int, int, int, int = 0) {}
void f2(int, int, int, int = 0, int);
void f2(int, int, int = 0, int, int);
void f2(int = 0, int, int, int, int);
void f3(int, int, int, int, int = 0);
void f3(int, int, int, int = 0, int) {}
void f3(int, int, int = 0, int, int);
void f3(int = 0, int, int, int, int);
void f4(int, int, int, int, int = 0);
void f4(int, int, int, int = 0, int);
void f4(int, int, int = 0, int, int) {}
void f4(int = 0, int, int, int, int);
void f5(int, int, int, int, int = 0);
void f5(int, int, int, int = 0, int);
void f5(int, int, int = 0, int, int);
void f5(int = 0, int, int, int, int) {}
struct A
{
void F1(int, int, int = 0);
void F2(int, int, int = 0);
};
void A::F1(int, int = 0, int) {}
void A::F2(int = 0, int, int) {}
template<int> struct B
{
void F1(int, int, int = 0);
void F2(int, int, int = 0);
};
template<int N> void B<N>::F1(int, int = 0, int) {}
template<int N> void B<N>::F2(int = 0, int, int) {}