/* #region Head */ // #include #include #include #include #include // assert.h #include // math.h #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; using ll = long long; using ull = unsigned long long; using ld = long double; using pll = pair; template using vc = vector; template using vvc = vc>; using vll = vc; using vvll = vvc; using vld = vc; using vvld = vvc; using vs = vc; using vvs = vvc; template using um = unordered_map; template using pq = priority_queue; template using pqa = priority_queue, greater>; template using us = unordered_set; #define REP(i, m, n) for (ll i = (m), i##_len = (ll)(n); i < i##_len; ++(i)) #define REPM(i, m, n) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; ++(i)) #define REPR(i, m, n) for (ll i = (m), i##_min = (ll)(n); i >= i##_min; --(i)) #define REPD(i, m, n, d) for (ll i = (m), i##_len = (ll)(n); i < i##_len; i += (d)) #define REPMD(i, m, n, d) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; i += (d)) #define REPI(itr, ds) for (auto itr = ds.begin(); itr != ds.end(); itr++) #define REPIR(itr, ds) for (auto itr = ds.rbegin(); itr != ds.rend(); itr++) #define ALL(x) begin(x), end(x) #define SIZE(x) ((ll)(x).size()) #define PERM(c) \ sort(ALL(c)); \ for (bool c##p = 1; c##p; c##p = next_permutation(ALL(c))) #define UNIQ(v) v.erase(unique(ALL(v)), v.end()); #define CEIL(a, b) (((a) + (b)-1) / (b)) #define endl '\n' constexpr ll INF = 1'010'000'000'000'000'017LL; constexpr int IINF = 1'000'000'007LL; constexpr ll MOD = 1'000'000'007LL; // 1e9 + 7 // constexpr ll MOD = 998244353; constexpr ld EPS = 1e-12; constexpr ld PI = 3.14159265358979323846; template istream &operator>>(istream &is, vc &vec) { // vector 入力 for (T &x : vec) is >> x; return is; } template ostream &operator<<(ostream &os, const vc &vec) { // vector 出力 (for dump) os << "{"; REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "" : ", "); os << "}"; return os; } template ostream &operator>>(ostream &os, const vc &vec) { // vector 出力 (inline) REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "\n" : " "); return os; } template istream &operator>>(istream &is, array &arr) { // array 入力 REP(i, 0, SIZE(arr)) is >> arr[i]; return is; } template ostream &operator<<(ostream &os, const array &arr) { // array 出力 (for dump) os << "{"; REP(i, 0, SIZE(arr)) os << arr[i] << (i == i_len - 1 ? "" : ", "); os << "}"; return os; } template istream &operator>>(istream &is, pair &pair_var) { // pair 入力 is >> pair_var.first >> pair_var.second; return is; } template ostream &operator<<(ostream &os, const pair &pair_var) { // pair 出力 os << "(" << pair_var.first << ", " << pair_var.second << ")"; return os; } // map, um, set, us 出力 template ostream &out_iter(ostream &os, const T &map_var) { os << "{"; REPI(itr, map_var) { os << *itr; auto itrcp = itr; if (++itrcp != map_var.end()) os << ", "; } return os << "}"; } template ostream &operator<<(ostream &os, const map &map_var) { return out_iter(os, map_var); } template ostream &operator<<(ostream &os, const um &map_var) { os << "{"; REPI(itr, map_var) { auto [key, value] = *itr; os << "(" << key << ", " << value << ")"; auto itrcp = itr; if (++itrcp != map_var.end()) os << ", "; } os << "}"; return os; } template ostream &operator<<(ostream &os, const set &set_var) { return out_iter(os, set_var); } template ostream &operator<<(ostream &os, const us &set_var) { return out_iter(os, set_var); } template ostream &operator<<(ostream &os, const pq &pq_var) { pq pq_cp(pq_var); os << "{"; if (!pq_cp.empty()) { os << pq_cp.top(), pq_cp.pop(); while (!pq_cp.empty()) os << ", " << pq_cp.top(), pq_cp.pop(); } return os << "}"; } void pprint() { cout << endl; } template void pprint(Head &&head, Tail &&...tail) { cout << head; if (sizeof...(Tail) > 0) cout << ' '; pprint(move(tail)...); } // dump #define DUMPOUT cerr void dump_func() { DUMPOUT << endl; } template void dump_func(Head &&head, Tail &&...tail) { DUMPOUT << head; if (sizeof...(Tail) > 0) DUMPOUT << ", "; dump_func(move(tail)...); } // chmax (更新「される」かもしれない値が前) template > bool chmax(T &xmax, const U &x, Comp comp = {}) { if (comp(xmax, x)) { xmax = x; return true; } return false; } // chmin (更新「される」かもしれない値が前) template > bool chmin(T &xmin, const U &x, Comp comp = {}) { if (comp(x, xmin)) { xmin = x; return true; } return false; } // ローカル用 #ifndef ONLINE_JUDGE #define DEBUG_ #endif #ifdef DEBUG_ #define DEB #define dump(...) \ DUMPOUT << " " << string(#__VA_ARGS__) << ": " \ << "[" << to_string(__LINE__) << ":" << __FUNCTION__ << "]" << endl \ << " ", \ dump_func(__VA_ARGS__) #else #define DEB if (false) #define dump(...) #endif #define VAR(type, ...) \ type __VA_ARGS__; \ cin >> __VA_ARGS__; template istream &operator,(istream &is, T &rhs) { return is >> rhs; } template ostream &operator,(ostream &os, const T &rhs) { return os << ' ' << rhs; } struct AtCoderInitialize { static constexpr int IOS_PREC = 15; static constexpr bool AUTOFLUSH = false; AtCoderInitialize() { ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr); cout << fixed << setprecision(IOS_PREC); if (AUTOFLUSH) cout << unitbuf; } } ATCODER_INITIALIZE; void Yn(bool p) { cout << (p ? "Yes" : "No") << endl; } void YN(bool p) { cout << (p ? "YES" : "NO") << endl; } /* #endregion */ // #include // using namespace atcoder; // Problem void solve() { VAR(ll, h, w, x); // if (x < (h - 1) + (w - 1)) { pprint(-1); return; } ll k = (h - 1) / 2; ll l = (w - 1) / 2; if (k % 2 == 1 && l % 2 == 1) { ll mi = min(h, w) - 1; ll ma = max(h, w) - 1; ll lb = mi + ma; ll ub = mi * (ma / 2) + ma + 2 * (mi - 2) / 2; // dump(lb, ub); ll d = x - lb; if (x > ub || d % 4 != 0) { pprint(-1); return; } bool swapped = false; if (h > w) { swap(h, w); swap(k, l); swapped = true; } assert(h <= w); ll step = d / 4; // dump(step); // k * wm 回以内なら,序盤の上下動で再現する ll wm = (l - 1) / 2; // dump(wm); vll updown(wm, 0); REP(i, 0, wm) { updown[i] = min(step, k); step -= updown[i]; if (step == 0) break; } // 右の方で調整 ll hm = (k - 1) / 2; vll leftright(hm, 0); REP(i, 0, hm) { leftright[i] = min(step, 1LL); step -= leftright[i]; if (step == 0) break; } assert(step == 0); vc tbl(h, string(w, '.')); // 通り道に '0' を付ける ll y = 0, x = 0; tbl[y][x] = 'o'; REP(i, 0, wm) { REP(j, 0, updown[i]) { tbl[y][x + 1] = '#'; // tbl[++y][x] = 'o'; // tbl[y][x + 1] = '#'; // tbl[++y][x] = 'o'; // } REP(j, 2 * updown[i] + 1, h) tbl[j][x + 1] = '#'; // tbl[y][++x] = 'o'; tbl[y][++x] = 'o'; REP(j, 0, updown[i]) { tbl[y][x + 1] = '#'; // tbl[--y][x] = 'o'; // tbl[y][x + 1] = '#'; // tbl[--y][x] = 'o'; // } REP(j, 2 * updown[i] + 1, h) tbl[j][x + 1] = '#'; // tbl[y][++x] = 'o'; tbl[y][++x] = 'o'; } REP(i, 0, min(w - 1, 2LL)) { tbl[y + 1][x] = '#'; tbl[y][++x] = 'o'; tbl[y + 1][x] = '#'; // dump(x); } REP(i, 0, min(h - 1, 2LL)) { tbl[++y][x] = 'o'; tbl[y][x - 1] = '#'; // } tbl[y][x - 1] = '.'; // // dump(hm); REP(i, 0, hm) { REP(j, 0, leftright[i]) { tbl[y + 1][x] = '#'; // tbl[y][--x] = 'o'; // tbl[y + 1][x] = '#'; // tbl[y][--x] = 'o'; // } tbl[++y][x] = 'o'; tbl[++y][x] = 'o'; REP(j, 0, leftright[i]) { if (y + 1 < h) tbl[y + 1][x] = '#'; // tbl[y][++x] = 'o'; // if (y + 1 < h) tbl[y + 1][x] = '#'; // tbl[y][++x] = 'o'; // } if (!leftright[i]) { tbl[y - 1][x - 1] = '#'; tbl[y - 1][x - 2] = '#'; tbl[y - 1][x - 3] = '#'; tbl[y + 1][x - 1] = '#'; tbl[y + 1][x - 2] = '#'; tbl[y + 1][x - 3] = '#'; } tbl[++y][x] = 'o'; tbl[++y][x] = 'o'; } // REP(i, 0, h) pprint(tbl[i]); if (swapped) { vc tbl2(w, string(h, ' ')); REP(i, 0, h) REP(j, 0, w) tbl2[j][i] = tbl[i][j]; swap(tbl, tbl2); swap(h, w); } // samitize REP(i, 0, h) REP(j, 0, w) { if (tbl[i][j] == 'o') tbl[i][j] = '.'; else if ((i + 1) % 2 == 1 && (j + 1) % 2 == 1) tbl[i][j] = '.'; // else // tbl[i][j] = '#'; } // dump REP(i, 0, h) pprint(tbl[i]); return; } if (k % 2 == 0 && l % 2 == 0) { ll lb = (h - 1) + (w - 1); ll ub = (h - 1) * (l + 1) + w; ll d = x - lb; if (x > ub || d % 4 != 0) { pprint(-1); return; } ll step = d / 4; // k * wm 回以内なら,序盤の上下動で再現する ll wm = l / 2; vll updown(wm, 0); REP(i, 0, wm) { updown[i] = min(step, k); step -= updown[i]; if (step == 0) break; } vc tbl(h, string(w, '.')); // 通り道に '0' を付ける ll y = 0, x = 0; tbl[y][x] = 'o'; REP(i, 0, wm) { REP(j, 0, updown[i]) { tbl[y][x + 1] = '#'; // tbl[++y][x] = 'o'; // tbl[y][x + 1] = '#'; // tbl[++y][x] = 'o'; // } REP(j, 2 * updown[i] + 1, h) tbl[j][x + 1] = '#'; // tbl[y][++x] = 'o'; tbl[y][++x] = 'o'; REP(j, 0, updown[i]) { tbl[y][x + 1] = '#'; // tbl[--y][x] = 'o'; // tbl[y][x + 1] = '#'; // tbl[--y][x] = 'o'; // } REP(j, 2 * updown[i] + 1, h) tbl[j][x + 1] = '#'; // tbl[y][++x] = 'o'; tbl[y][++x] = 'o'; } REP(i, 0, 2) tbl[y][++x] = 'o'; REP(i, 0, h - 1) tbl[++y][x] = 'o'; // samitize REP(i, 0, h) REP(j, 0, w) { if (tbl[i][j] == 'o') tbl[i][j] = '.'; else if ((i + 1) % 2 == 1 && (j + 1) % 2 == 1) tbl[i][j] = '.'; // else // tbl[i][j] = '#'; } // dump REP(i, 0, h) pprint(tbl[i]); return; } // どっちか偶数.どっちか奇数. // l 偶数にしたい bool swapped = false; if (l % 2 == 1) { swap(h, w); swap(k, l); swapped = true; } assert(k % 2 == 1); assert(l % 2 == 0); { ll lb = (h - 1) + (w - 1); ll ub = (h - 1) * (l + 1) + w; ll d = x - lb; if (x > ub || d % 4 != 0) { pprint(-1); return; } ll step = d / 4; // k * wm 回以内なら,序盤の上下動で再現する ll wm = l / 2; vll updown(wm, 0); REP(i, 0, wm) { updown[i] = min(step, k); step -= updown[i]; if (step == 0) break; } vc tbl(h, string(w, '.')); // 通り道に '0' を付ける ll y = 0, x = 0; tbl[y][x] = 'o'; REP(i, 0, wm) { REP(j, 0, updown[i]) { tbl[y][x + 1] = '#'; // tbl[++y][x] = 'o'; // tbl[y][x + 1] = '#'; // tbl[++y][x] = 'o'; // } REP(j, 2 * updown[i] + 1, h) tbl[j][x + 1] = '#'; // tbl[y][++x] = 'o'; tbl[y][++x] = 'o'; REP(j, 0, updown[i]) { tbl[y][x + 1] = '#'; // tbl[--y][x] = 'o'; // tbl[y][x + 1] = '#'; // tbl[--y][x] = 'o'; // } REP(j, 2 * updown[i] + 1, h) tbl[j][x + 1] = '#'; // tbl[y][++x] = 'o'; tbl[y][++x] = 'o'; } REP(i, 0, 2) tbl[y][++x] = 'o'; REP(i, 0, h - 1) tbl[++y][x] = 'o'; // dump // REP(i, 0, h) pprint(tbl[i]); if (swapped) { vc tbl2(w, string(h, ' ')); REP(i, 0, h) REP(j, 0, w) tbl2[j][i] = tbl[i][j]; swap(tbl, tbl2); swap(h, w); } // samitize REP(i, 0, h) REP(j, 0, w) { if (tbl[i][j] == 'o') tbl[i][j] = '.'; else if ((i + 1) % 2 == 1 && (j + 1) % 2 == 1) tbl[i][j] = '.'; // else // tbl[i][j] = '#'; } // dump REP(i, 0, h) pprint(tbl[i]); return; } } // entry point int main() { solve(); return 0; }