結果
問題 | No.2505 matriX cOnstRuction |
ユーザー |
|
提出日時 | 2023-02-14 19:53:03 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 4,788 bytes |
コンパイル時間 | 1,388 ms |
コンパイル使用メモリ | 97,972 KB |
最終ジャッジ日時 | 2025-02-10 15:19:45 |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
other | AC * 1 WA * 63 |
ソースコード
#include <algorithm> #include <array> #include <cassert> #include <iostream> #include <limits> #include <tuple> #include <vector> int floor_pow2(int n) { int x = 1; while ((x << 1) <= n) x <<= 1; return x; } void println() { std::cout << '\n'; } template <typename Head, typename ...Tails> void println(Head&& head, Tails &&...tails) { std::cout << std::forward<Head>(head); if constexpr (sizeof...(Tails)) { std::cout << ' '; } println(std::forward<Tails>(tails)...); } using Weight = long long; constexpr int L = 30; constexpr Weight inf = std::numeric_limits<int>::max(); void solve(int n, int m, const std::vector<int>& r, const std::vector<int>& c, const std::vector<std::vector<int>>& a) { for (int i = 0; i < n; ++i) for (int j = 0; j < m; ++j) { if (a[0][0] ^ a[0][j] ^ a[i][0] ^ a[i][j]) { println(-1); return; } } // (l, r, w): add w to x in [l, r) std::vector<std::tuple<int, int, Weight>> costs; // add f(X) = W * [X ^ Y > Z] auto add_cost = [&](int Y, int Z, Weight W) { const int YZ = Y ^ Z; std::vector<std::tuple<int, int, Weight>> costs_l, costs_r; int l = 0, r = 1 << L; for (int bit = L - 1; bit >= 0; --bit) { int mid = (l + r) >> 1; if ((YZ >> bit) & 1) { if (not ((Z >> bit) & 1)) { if (costs_l.size() and std::get<1>(costs_l.back()) == l) { std::get<1>(costs_l.back()) = mid; } else { costs_l.emplace_back(l, mid, W); } } l = mid; } else { if (not ((Z >> bit) & 1)) { if (costs_r.size() and std::get<1>(costs_r.back()) == r) { std::get<1>(costs_r.back()) = mid; } else { costs_r.emplace_back(mid, r, W); } } r = mid; } } std::move(costs_l.begin(), costs_l.end(), std::back_inserter(costs)); std::move(costs_r.begin(), costs_r.end(), std::back_inserter(costs)); }; for (int i = 0; i < n; ++i) { int Y = a[0][0] ^ a[i][0]; if (r[i]) { add_cost(Y, 0, 1); add_cost(Y, r[i], 1); add_cost(Y, 2 * floor_pow2(r[i]) - 1, inf); } else { add_cost(Y, 0, inf); } } for (int j = 0; j < m; ++j) { int Y = a[0][j]; if (c[j]) { add_cost(Y, 0, 1); add_cost(Y, c[j], 1); add_cost(Y, 2 * floor_pow2(c[j]) - 1, inf); } else { add_cost(Y, 0, inf); } } std::vector<int> xs { 0, 1 << L }; for (auto [l, r, w] : costs) { xs.push_back(l); xs.push_back(r); } std::sort(xs.begin(), xs.end()); xs.erase(std::unique(xs.begin(), xs.end()), xs.end()); const int k = xs.size(); std::vector<Weight> imos(k); for (auto [l, r, w] : costs) { imos[std::lower_bound(xs.begin(), xs.end(), l) - xs.begin()] += w; imos[std::lower_bound(xs.begin(), xs.end(), r) - xs.begin()] -= w; } for (int i = 1; i < k; ++i) { imos[i] += imos[i - 1]; } std::pair<Weight, int> min_cost{ inf, 0 }; for (int i = 0; i < k - 1; ++i) { min_cost = std::min(min_cost, std::make_pair(imos[i], xs[i])); } auto [cost, X] = min_cost; if (cost >= inf) { println(-1); return; } println(cost); std::vector<std::tuple<char, int, int>> ops; for (int i = 0; i < n; ++i) { int s = X ^ a[0][0] ^ a[i][0]; if (s == 0) { continue; } else if (s <= r[i]) { println('r', i + 1, s); } else { int p = floor_pow2(r[i]); println('r', i + 1, p); println('r', i + 1, s ^ p); } } for (int j = 0; j < m; ++j) { int t = X ^ a[0][j]; if (t == 0) { continue; } else if (t <= c[j]) { println('c', j + 1, t); } else { int p = floor_pow2(c[j]); println('c', j + 1, p); println('c', j + 1, t ^ p); } } } int main() { std::ios::sync_with_stdio(false); std::cin.tie(nullptr); int t; std::cin >> t; while (t-- > 0) { int n, m; std::cin >> n >> m; std::vector<int> r(n), c(m); for (auto& e : r) std::cin >> e; for (auto& e : c) std::cin >> e; std::vector a(n, std::vector<int>(m)); for (auto& row : a) for (auto& e : row) { std::cin >> e; } solve(n, m, r, c, a); } return 0; }