結果
問題 | No.2543 Many Meetings |
ユーザー | Forested |
提出日時 | 2023-11-24 22:35:46 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 387 ms / 2,000 ms |
コード長 | 3,063 bytes |
コンパイル時間 | 1,681 ms |
コンパイル使用メモリ | 138,496 KB |
実行使用メモリ | 21,376 KB |
最終ジャッジ日時 | 2024-09-26 09:38:55 |
合計ジャッジ時間 | 9,354 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 268 ms
21,240 KB |
testcase_04 | AC | 288 ms
21,244 KB |
testcase_05 | AC | 291 ms
21,244 KB |
testcase_06 | AC | 271 ms
21,240 KB |
testcase_07 | AC | 271 ms
21,368 KB |
testcase_08 | AC | 230 ms
21,248 KB |
testcase_09 | AC | 240 ms
21,116 KB |
testcase_10 | AC | 224 ms
21,376 KB |
testcase_11 | AC | 230 ms
21,248 KB |
testcase_12 | AC | 236 ms
21,240 KB |
testcase_13 | AC | 237 ms
17,464 KB |
testcase_14 | AC | 148 ms
11,296 KB |
testcase_15 | AC | 171 ms
11,152 KB |
testcase_16 | AC | 210 ms
14,948 KB |
testcase_17 | AC | 256 ms
16,760 KB |
testcase_18 | AC | 374 ms
18,440 KB |
testcase_19 | AC | 380 ms
17,168 KB |
testcase_20 | AC | 362 ms
17,052 KB |
testcase_21 | AC | 387 ms
19,300 KB |
testcase_22 | AC | 362 ms
16,756 KB |
testcase_23 | AC | 3 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 3 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 3 ms
5,376 KB |
testcase_28 | AC | 148 ms
16,484 KB |
testcase_29 | AC | 44 ms
7,780 KB |
testcase_30 | AC | 49 ms
7,784 KB |
testcase_31 | AC | 37 ms
6,952 KB |
testcase_32 | AC | 126 ms
15,508 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 2 ms
5,376 KB |
testcase_35 | AC | 2 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 | 2 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
ソースコード
#ifndef LOCAL #define FAST_IO #endif // ============ #include <algorithm> #include <array> #include <bitset> #include <cassert> #include <cmath> #include <cstring> #include <iomanip> #include <iostream> #include <list> #include <map> #include <numeric> #include <queue> #include <random> #include <set> #include <stack> #include <string> #include <tuple> #include <unordered_map> #include <unordered_set> #include <utility> #include <vector> #define OVERRIDE(a, b, c, d, ...) d #define REP2(i, n) for (i32 i = 0; i < (i32)(n); ++i) #define REP3(i, m, n) for (i32 i = (i32)(m); i < (i32)(n); ++i) #define REP(...) OVERRIDE(__VA_ARGS__, REP3, REP2)(__VA_ARGS__) #define PER(i, n) for (i32 i = (i32)(n) - 1; i >= 0; --i) #define ALL(x) begin(x), end(x) using namespace std; using u32 = unsigned int; using u64 = unsigned long long; using i32 = signed int; using i64 = signed long long; using f64 = double; using f80 = long double; template <typename T> using Vec = vector<T>; template <typename T> bool chmin(T &x, const T &y) { if (x > y) { x = y; return true; } return false; } template <typename T> bool chmax(T &x, const T &y) { if (x < y) { x = y; return true; } return false; } #ifdef INT128 using u128 = __uint128_t; using i128 = __int128_t; istream &operator>>(istream &is, i128 &x) { i64 v; is >> v; x = v; return is; } ostream &operator<<(ostream &os, i128 x) { os << (i64)x; return os; } istream &operator>>(istream &is, u128 &x) { u64 v; is >> v; x = v; return is; } ostream &operator<<(ostream &os, u128 x) { os << (u64)x; return os; } #endif [[maybe_unused]] constexpr i32 INF = 1000000100; [[maybe_unused]] constexpr i64 INF64 = 3000000000000000100; struct SetUpIO { SetUpIO() { #ifdef FAST_IO ios::sync_with_stdio(false); cin.tie(nullptr); #endif cout << fixed << setprecision(15); } } set_up_io; // ============ #ifdef DEBUGF #else #define DBG(x) (void) 0 #endif int main() { i32 n, k; cin >> n >> k; Vec<pair<i32, i32>> rs(n); REP(i, n) { cin >> rs[i].first >> rs[i].second; } sort(ALL(rs)); rs.emplace_back(INF, INF); i32 t = 20; Vec<Vec<i32>> db(t, Vec<i32>(n + 1, 0)); REP(i, t) { db[i][n] = INF; } PER(i, n) { db[0][i] = min(rs[i].second, db[0][i + 1]); } REP(i, 1, t) { PER(j, n) { i32 idx = (i32)(lower_bound(ALL(rs), pair<i32, i32>(db[i - 1][j], 0)) - rs.begin()); db[i][j] = min(db[i][j + 1], db[i - 1][idx]); } } i32 ans = INF; REP(i, n) { i32 cur = rs[i].first; REP(j, t) { if (k & (1 << j)) { i32 idx = (i32)(lower_bound(ALL(rs), pair<i32, i32>(cur, 0)) - rs.begin()); cur = db[j][idx]; } } if (cur != INF) { chmin(ans, cur - rs[i].first); } } if (ans == INF) { cout << -1 << '\n'; } else { cout << ans << '\n'; } }