結果
問題 | No.2543 Many Meetings |
ユーザー | 👑 binap |
提出日時 | 2023-11-26 08:40:18 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 233 ms / 2,000 ms |
コード長 | 2,235 bytes |
コンパイル時間 | 4,957 ms |
コンパイル使用メモリ | 275,948 KB |
実行使用メモリ | 24,404 KB |
最終ジャッジ日時 | 2024-09-26 11:28:58 |
合計ジャッジ時間 | 10,309 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 1 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 216 ms
24,404 KB |
testcase_04 | AC | 225 ms
24,268 KB |
testcase_05 | AC | 220 ms
24,276 KB |
testcase_06 | AC | 218 ms
24,268 KB |
testcase_07 | AC | 222 ms
24,272 KB |
testcase_08 | AC | 221 ms
24,276 KB |
testcase_09 | AC | 223 ms
24,396 KB |
testcase_10 | AC | 227 ms
24,272 KB |
testcase_11 | AC | 233 ms
24,272 KB |
testcase_12 | AC | 222 ms
24,272 KB |
testcase_13 | AC | 167 ms
19,920 KB |
testcase_14 | AC | 94 ms
12,748 KB |
testcase_15 | AC | 96 ms
12,496 KB |
testcase_16 | AC | 144 ms
16,976 KB |
testcase_17 | AC | 168 ms
19,024 KB |
testcase_18 | AC | 179 ms
20,984 KB |
testcase_19 | AC | 166 ms
19,540 KB |
testcase_20 | AC | 158 ms
19,536 KB |
testcase_21 | AC | 194 ms
22,348 KB |
testcase_22 | AC | 156 ms
19,020 KB |
testcase_23 | AC | 3 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 3 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 125 ms
18,764 KB |
testcase_29 | AC | 42 ms
8,528 KB |
testcase_30 | AC | 40 ms
8,656 KB |
testcase_31 | AC | 35 ms
7,636 KB |
testcase_32 | AC | 116 ms
17,616 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 2 ms
5,376 KB |
testcase_35 | AC | 1 ms
5,376 KB |
testcase_36 | AC | 2 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
testcase_38 | AC | 2 ms
5,376 KB |
testcase_39 | AC | 2 ms
5,376 KB |
testcase_40 | AC | 2 ms
5,376 KB |
testcase_41 | AC | 1 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
ソースコード
#include<bits/stdc++.h> #include<atcoder/all> #define rep(i,n) for(int i=0;i<n;i++) using namespace std; using namespace atcoder; typedef long long ll; typedef vector<int> vi; typedef vector<long long> vl; typedef vector<vector<int>> vvi; typedef vector<vector<long long>> vvl; typedef long double ld; typedef pair<int, int> P; ostream& operator<<(ostream& os, const modint& a) {os << a.val(); return os;} template <int m> ostream& operator<<(ostream& os, const static_modint<m>& a) {os << a.val(); return os;} template<typename T> istream& operator>>(istream& is, vector<T>& v){int n = v.size(); assert(n > 0); rep(i, n) is >> v[i]; return is;} template<typename U, typename T> ostream& operator<<(ostream& os, const pair<U, T>& p){os << p.first << ' ' << p.second; return os;} template<typename T> ostream& operator<<(ostream& os, const vector<T>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : " "); return os;} template <typename T> ostream& operator<<(ostream& os, const vector<vector<T>>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : ""); return os;} const long long INF = 1001001001001; int main(){ int n, k; cin >> n >> k; vector<tuple<long long, long long, int>> v; rep(i, n){ long long l, r; cin >> l >> r; v.emplace_back(l, r, -1); } sort(v.begin(), v.end()); rep(i, n){ auto [l, r, tmp] = v[i]; v[i] = {r, l, i}; } sort(v.begin(), v.end()); vvi dp(20, vi(n + 1, n)); queue<pair<long long, int>> qu; rep(i, n){ auto [r, l, id1] = v[i]; // cout << r << ' ' << l << ' ' << id1 << "\n"; while(qu.size()){ auto [r_before, id2] = qu.front(); if(r_before <= l){ dp[0][id2] = id1; qu.pop(); }else break; } qu.emplace(r, id1); } rep(j, 19){ rep(i, n + 1){ dp[j + 1][i] = dp[j][dp[j][i]]; } } rep(i, n){ auto [r, l, id] = v[i]; v[i] = {l, r, id}; } sort(v.begin(), v.end()); long long ans = INF; rep(i, n){ int p = i; rep(j, 20){ if(((k - 1) >> j) & 1){ p = dp[j][p]; } } if(p == n) continue; // cout << i << ' ' << p <<"\n"; auto [l1, r1, id1] = v[i]; auto [l2, r2, id2] = v[p]; ans = min(ans, r2 - l1); } // cout << dp[0]; if(ans == INF) cout << "-1\n"; else cout << ans << "\n"; return 0; }