結果
問題 | No.2157 崖 |
ユーザー |
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提出日時 | 2022-12-08 17:00:49 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 3,171 ms / 6,000 ms |
コード長 | 4,939 bytes |
コンパイル時間 | 1,339 ms |
コンパイル使用メモリ | 114,112 KB |
最終ジャッジ日時 | 2025-02-09 06:26:50 |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 22 |
ソースコード
#include <algorithm> #include <iostream> #include <iomanip> #include <limits.h> #include <map> #include <math.h> #include <numeric> #include <queue> #include <set> #include <sstream> #include <string> #include <utility> #include <vector> #include <stack> #include <complex> using namespace std; #define rep(i, n) for (int i = 0; i < n; i++) #define rep1(i, n) for (int i = 1; i < n + 1; i++) #define rev(i, n) for (int i = n - 1; i >= 0; i--) #define all(A) A.begin(), A.end() #define itr(A, l, r) A.begin() + l, A.begin() + r #define debug(var) cout << #var << " = " << var << endl; typedef long long ll; template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p) { os << "(" << p.first << "," << p.second << ")"; return os; } template <typename T1, typename T2> istream &operator>>(istream &is, pair<T1, T2> &p) { is >> p.first >> p.second; return is; } template <typename T> ostream &operator<<(ostream &os, const vector<T> &v) { for (int i = 0; i < (int)v.size(); i++) { os << v[i] << (i + 1 != (int)v.size() ? " " : ""); } return os; } template <typename T> ostream &operator<<(ostream &os, const vector<vector<T>> &v) { for (int i = 0; i < (int)v.size(); i++) { os << v[i] << endl; } return os; } template <typename T> ostream &operator<<(ostream &os, const vector<vector<vector<T>>> &v) { for (int i = 0; i < (int)v.size(); i++) { os << "i = " << i << endl; os << v[i]; } return os; } template <typename T> istream &operator>>(istream &is, vector<T> &v) { for (T &in : v) is >> in; return is; } template <typename T, typename S> ostream &operator<<(ostream &os, map<T, S> &mp) { for (auto &[key, val] : mp) { os << key << ":" << val << " "; } cout << endl; return os; } template <typename T> ostream &operator<<(ostream &os, set<T> st) { auto itr = st.begin(); for (int i = 0; i < (int)st.size(); i++) { os << *itr << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; } template <typename T> ostream &operator<<(ostream &os, multiset<T> st) { auto itr = st.begin(); for (int i = 0; i < (int)st.size(); i++) { os << *itr << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; } template <typename T> ostream &operator<<(ostream &os, queue<T> q) { while (q.size()) { os << q.front() << " "; q.pop(); } return os; } template <typename T> ostream &operator<<(ostream &os, deque<T> q) { while (q.size()) { os << q.front() << " "; q.pop_front(); } return os; } template <typename T> ostream &operator<<(ostream &os, stack<T> st) { while (st.size()) { os << st.top() << " "; st.pop(); } return os; } template <typename T> ostream &operator<<(ostream &os, priority_queue<T> pq) { while (pq.size()) { os << pq.top() << " "; pq.pop(); } return os; } template <typename T> ostream &operator<<(ostream &os, priority_queue<T, vector<T>, greater<T>> mpq) { while (mpq.size()) { os << mpq.top() << " "; mpq.pop(); } return os; } int main() { int n, m; cin >> n >> m; vector<vector<int>> p(n, vector<int>(m)); cin >> p; rep(i, n) { sort(all(p[i])); } int ok = 1e9 + 1; int ng = -1; while (abs(ok - ng) > 1) { int mid = ok + ng; mid /= 2; // debug(mid); vector<vector<int>> dp(n, vector<int>(m + 1)); rep(j, m) { dp[0][j] = 1; } rep(i, n - 1) { rep(j, m) { if (dp[i][j] == 0) { continue; } int start = lower_bound(all(p[i + 1]), p[i][j]) - p[i + 1].begin(); int end = upper_bound(all(p[i + 1]), p[i][j] + mid) - p[i + 1].begin(); // debug(start); // debug(end); if (start > end) { continue; } dp[i + 1][start]++; dp[i + 1][end]--; } rep(j, m) { dp[i + 1][j + 1] += dp[i + 1][j]; } rep(j, m) { auto chmin = [](auto &a, auto b) { a = min(a, b); }; chmin(dp[i + 1][j], 1); } } // cout << dp << endl; int criteria = 0; rep(j, m) { criteria |= dp[n - 1][j]; } // debug(criteria); if (criteria) { ok = mid; } else { ng = mid; } } if (ok == 1e9 + 1) { cout << -1 << endl; return 0; } cout << ok << endl; }