結果

問題 No.1703 Much Matching
ユーザー bayashiko
提出日時 2021-10-08 23:35:12
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 317 ms / 2,000 ms
コード長 2,605 bytes
コンパイル時間 2,257 ms
コンパイル使用メモリ 203,324 KB
最終ジャッジ日時 2025-01-24 23:31:54
ジャッジサーバーID
(参考情報)
judge2 / judge2
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 35
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

//https://atcoder.jp/contests/arc126/submissions/25518669
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#include <atcoder/modint>
using namespace std;
using namespace atcoder;
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
template <class T>
using V = vector<T>;
template <class T>
using VV = V<V<T>>;
template <class T>
V<T> make_vec(size_t a) {
return V<T>(a);
}
template <class T, class... Ts>
auto make_vec(size_t a, Ts... ts) {
return V<decltype(make_vec<T>(ts...))>(a, make_vec<T>(ts...));
}
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define fi first
#define se second
#define rep(i, n) rep2(i, 0, n)
#define rep2(i, m, n) for (int i = m; i < (n); i++)
#define per(i, b) per2(i, 0, b)
#define per2(i, a, b) for (int i = int(b) - 1; i >= int(a); i--)
#define ALL(c) (c).begin(), (c).end()
#define SZ(x) ((int)(x).size())
constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n - 1); }
template <class T, class U>
void chmin(T& t, const U& u) {
if (t > u) t = u;
}
template <class T, class U>
void chmax(T& t, const U& u) {
if (t < u) t = u;
}
template <class T, class U>
ostream& operator<<(ostream& os, const pair<T, U>& p) {
os << "(" << p.first << "," << p.second << ")";
return os;
}
template <class T>
ostream& operator<<(ostream& os, const vector<T>& v) {
os << "{";
rep(i, v.size()) {
if (i) os << ",";
os << v[i];
}
os << "}";
return os;
}
template <class T>
auto operator<<(ostream& os, T t) ->
typename std::enable_if_t<internal::is_modint<T>::value, ostream&> {
os << t.val();
return os;
}
#ifdef LOCAL
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
cerr << " " << H;
debug_out(T...);
}
#define debug(...) \
cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
constexpr int INF = TEN(9);
int main() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
int N, M ,Q;
cin >> N >> M >> Q;
V<pii> vec(Q);
rep(i, Q) {
int a, b;
cin >> a >> b;
vec[i] = mp(a, -b);
}
sort(ALL(vec));
V<int> dp(max(N,M) + 1, INF);
dp[0] = 0;
for (auto& [a, b] : vec) {
auto it = lower_bound(ALL(dp), -b);
*it = -b;
}
cout << lower_bound(ALL(dp), INF) - dp.begin() - 1 << endl;
return 0;
}
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