#include "bits/stdc++.h" #include #include #include "atcoder/all" #include //#include //using namespace boost::multiprecision; using namespace std; using namespace atcoder; using ll = long long; using ull = unsigned long long; using mint = modint998244353; using mint2 = modint1000000007; const double eps = 1e-9; #define REP(i, n) for (ll i = 0; i < ll(n); ++i) #define REPI(i, init, n) for (ll i = init; i < ll(n); ++i) #define REPD(i, init) for (ll i = init; i >=0; --i) #define REPDI(i, init, n) for (ll i = init; i >=n; --i) #define REPE(i, c) for (const auto& i : c) #define TCASE() ll _ttt; cin >> _ttt; while(_ttt--) using vl = vector; using vvl = vector; using vvvl = vector; #define VLI(a, n) vector a; a.assign(n, 0); for(auto& x : a) cin >> x; #define DLI(a, n) deque a; a.assign(n, 0); for(auto& x : a) cin >> x; #define VSI(a, n) vector a; a.assign(n, ""); for(auto& x : a) cin >> x; #define VVLI(a, n, m, init) vector> a(n); for(auto& x : a) x.assign(m, init); using vd = vector; using pl = pair; using vpl = vector; struct uv { ll u; ll v; ll c; }; #define VUVI(a, n) vector a; a.assign(n, {0, 0, 1}); for(auto& x : a) {cin >> x.u >> x.v; x.u--; x.v--;} #define VUVCI(a, n) vector a; a.assign(n, {0, 0, 0}); for(auto& x : a) {cin >> x.u >> x.v >> x.c; x.u--; x.v--;} vvl to_edge(const ll n, const vector& v) { vvl ret(n); for (auto& x : v) ret[x.u].push_back(x.v); return ret; } vvl to_edge_d(const ll n, const vector& v) { vvl ret(n); for (auto& x : v) { ret[x.u].push_back(x.v); ret[x.v].push_back(x.u); } return ret; } template using pql = priority_queue; template using pqg = priority_queue, greater>; using vm = vector; using vvm = vector; ostream& operator<<(ostream& os, const mint& v) { os << v.val(); return os; } void yn(bool f) { std::cout << (f ? "Yes" : "No") << endl; }; template void ov(const T& v) { for (auto it = v.begin(); it != v.end(); it++) { if (it != v.begin()) cout << " "; cout << *it; } }; template<> void ov(const vm& v) { for (auto it = v.begin(); it != v.end(); it++) { if (it != v.begin()) cout << " "; cout << it->val(); } }; const ll llhuge = 1LL << 62; //十分でかいが多少足しても溢れない数値 auto gmax(const auto& a, const auto& b) { return a > b ? a : b; }; auto gmin(const auto& a, const auto& b) { return a < b ? a : b; }; bool chmin(auto& a, const auto& b) { const bool ret = a > b; a = gmin(a, b); return ret; } bool chmax(auto& a, const auto& b) { const bool ret = a < b; a = gmax(a, b); return ret; } void sort(auto& v) { std::ranges::sort(v); }; void rev(auto& v) { std::ranges::reverse(v); }; template auto p_sum(const T& v) { T ret(v.size()); std::partial_sum(begin(v), end(v), ret.begin()); return ret; }; template [[nodiscard]] V myat(const T& mp, const K& key) { return mp.find(key) == mp.end() ? V() : mp.at(key); } long long ceil(const long long a, const long long b) { return (a + b - 1) / b; } int main() { cin.tie(nullptr); ios::sync_with_stdio(false); ll a, b; cin >> a >> b; ll l = a * a + b * b; set sa; set sb; queue qa; queue qb; qa.push({ 0, 0 }); qb.push({ a, 0 }); while (!qa.empty()) { auto [x, y] = qa.front(); qa.pop(); vpl v(4, { x, y }); v[0].first += a; v[0].second += b; v[1].first += b; v[1].second -= a; v[2].first -= a; v[2].second -= b; v[3].first -= b; v[3].second += a; REP(i, 4) { v[i].first += l; v[i].first %= l; v[i].second += l; v[i].second %= l; } REP(i, 4) { if (sa.find(v[i]) == sa.end()) { sa.insert(v[i]); qa.push(v[i]); } } } while (!qb.empty()) { auto [x, y] = qb.front(); qb.pop(); vpl v(4, { x, y }); v[0].first += a; v[0].second += b; v[1].first += b; v[1].second -= a; v[2].first -= a; v[2].second -= b; v[3].first -= b; v[3].second += a; REP(i, 4) { v[i].first += l; v[i].first %= l; v[i].second += l; v[i].second %= l; } REP(i, 4) { if (sb.find(v[i]) == sb.end()) { sb.insert(v[i]); qb.push(v[i]); } } } REPE(e, sa) { cout << e.first << " " << e.second << endl; } REPE(e, sb) { cout << e.first << " " << e.second << endl; } }