結果

問題 No.580 旅館の予約計画
ユーザー komori3
提出日時 2018-02-19 05:29:24
言語 C++11（廃止可能性あり）
(gcc 13.3.0)
結果
AC  
実行時間 3 ms / 2,000 ms
コード長 4,326 bytes
コンパイル時間 1,353 ms
コンパイル使用メモリ 164,836 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-07-06 03:57:23
合計ジャッジ時間 2,272 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 36
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘int scan_time()’:
main.cpp:44:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   44 |         scanf("%d %02d:%02d", &d, &h, &m);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

ソースコード

diff # 

#define _CRT_SECURE_NO_WARNINGS
#include "bits/stdc++.h"
#include <random>
//#include "util.k"

using namespace std;

//呪文
#define DUMPOUT cout
#define dump(...) DUMPOUT<<"  ";DUMPOUT<<#__VA_ARGS__<<" :["<<__LINE__<<":"<<__FUNCTION__<<"]"<<endl;DUMPOUT<<"    ";dump_func(__VA_ARGS__)

typedef unsigned uint; typedef long long ll; typedef unsigned long long ull; typedef pair<int, int> pii; typedef pair<ll, ll> pll; typedef pair<double, double> pdd; typedef pair<string, string> pss;
template <typename _KTy, typename _Ty> ostream& operator << (ostream& ostr, const pair<_KTy, _Ty>& m) { ostr << "{" << m.first << ", " << m.second << "}"; return ostr; }
template <typename _KTy, typename _Ty> ostream& operator << (ostream& ostr, const map<_KTy, _Ty>& m) { if (m.empty()) { ostr << "{ }"; return ostr; } ostr << "{" << *m.begin(); for (auto itr = ++m.begin(); itr != m.end(); itr++) { ostr << ", " << *itr; } ostr << "}"; return ostr; }
template <typename _Ty> ostream& operator << (ostream& ostr, const vector<_Ty>& v) { if (v.empty()) { ostr << "{ }"; return ostr; } ostr << "{" << v.front(); for (auto itr = ++v.begin(); itr != v.end(); itr++) { ostr << ", " << *itr; }	ostr << "}"; return ostr; }
template <typename _Ty> ostream& operator << (ostream& ostr, const set<_Ty>& s) { if (s.empty()) { ostr << "{ }"; return ostr; } ostr << "{" << *(s.begin()); for (auto itr = ++s.begin(); itr != s.end(); itr++) { ostr << ", " << *itr; }	ostr << "}"; return ostr; }
template <typename _Ty> ostream& operator << (ostream& ostr, const stack<_Ty>& s) { if (s.empty()) { ostr << "{ }"; return ostr; } stack<_Ty> t(s); ostr << "{" << t.top(); t.pop(); while (!t.empty()) { ostr << ", " << t.top(); t.pop(); } ostr << "}";	return ostr; }
template <typename _Ty> ostream& operator << (ostream& ostr, const list<_Ty>& l) { if (l.empty()) { ostr << "{ }"; return ostr; } ostr << "{" << l.front(); for (auto itr = ++l.begin(); itr != l.end(); ++itr) { ostr << ", " << *itr; } ostr << "}"; return ostr; }
template <typename _KTy, typename _Ty> istream& operator >> (istream& istr, pair<_KTy, _Ty>& m) { istr >> m.first >> m.second; return istr; }
template <typename _Ty> istream& operator >> (istream& istr, vector<_Ty>& v) { for (size_t i = 0; i < v.size(); i++) istr >> v[i]; return istr; }
namespace aux { // print tuple
	template<typename Ty, unsigned N, unsigned L> struct tp { static void print(ostream& os, const Ty& v) { os << get<N>(v) << ", "; tp<Ty, N + 1, L>::print(os, v); } };
	template<typename Ty, unsigned N> struct tp<Ty, N, N> { static void print(ostream& os, const Ty& value) { os << get<N>(value); } };
}
template<typename... Tys> ostream& operator<<(ostream& os, const tuple<Tys...>& t) { os << "{"; aux::tp<tuple<Tys...>, 0, sizeof...(Tys)-1>::print(os, t); os << "}"; return os; }

template<typename A, size_t N, typename T> inline void Fill(A(&array)[N], const T &val) { std::fill((T*)array, (T*)(array + N), val); }

void dump_func() { DUMPOUT << endl; }
template <class Head, class... Tail> void dump_func(Head&& head, Tail&&... tail) { DUMPOUT << head; if (sizeof...(Tail) == 0) { DUMPOUT << " "; } else { DUMPOUT << ", "; } dump_func(std::move(tail)...); }

#define PI 3.14159265358979323846
#define EPS 1e-11
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define all(x) (x).begin(), (x).end()
#define SZ(x) ((int)(x).size())
#define fake false



int scan_time() {
	int d, h, m;
	scanf("%d %02d:%02d", &d, &h, &m);
	return d * 24 * 60 + h * 60 + m;
}

int time_schedule[15000];

int main()
{
	//clock_t start, end;
	//start = clock();

	//cin.tie(0);
	//ios::sync_with_stdio(false);
	
	int N, M;
	cin >> N >> M;
	vector<pii> stay(M);
	REP(i, M) {
		stay[i].first = scan_time(); stay[i].second = scan_time() + 1;
	}

	sort(stay.begin(), stay.end(),
		[](const pii& a, const pii& b) { return (a.second == b.second ? a.first < b.first : a.second < b.second); });

	int ans = 0;
	for (int i = 0; i < stay.size(); i++) {
		int begin = stay[i].first, end = stay[i].second;
		bool flag = true;
		for (int j = begin; j < end; j++) {
			if (time_schedule[j] == N) {
				flag = false;
				break;
			}
		}
		if (flag) {
			ans++;
			for (int j = begin; j < end; j++) time_schedule[j]++;
		}
	}
	cout << ans << endl;


	//end = clock();
	//printf("%d msec.\k", end - start);

	return 0;
}
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