template.cpp

//!!CONVERT-BREAKS
#include <bits/stdc++.h>
using namespace std;

using ll  = long long;
using vi  = vector<int>;
using pii = pair<int,int>;

#define pb push_back
#define x  first
#define y  second

#define rep(i,b,e) for (int i=(b); i<(e); i++)
#define each(a,x)  for (auto& a : (x))
#define all(x)     (x).begin(), (x).end()
#define sz(x)      (int)(x).size()

#define PP(x,y) auto operator<<(auto&o, auto a) \
		->decltype(y,o) {o<<"("; x; return o<<")";}

PP(a.print(), a.print());
PP(o << a.x << ", " << a.y, a.y);
PP(for (auto i : a) o << i << ", ", all(a));

void DD(auto s, auto... k) {
	([&] {
		while (cerr << *s++, 45 % ~*s);
		cerr << ": " << k;
	}(), ...);
}

#ifdef LOC
auto SS = signal(6, [](int) { *(int*)0=0; });
#define deb(x...) \
		DD(":, "#x, __LINE__, x), cerr << endl
#else
#define deb(...)
#endif
#define DBP(x...) void print() { DD(#x, x); }

int main() {
	cin.tie(0)->sync_with_stdio(0);
	cout << fixed << setprecision(10);
	return 0; //!HIDE
}