Submission #66378

ソースコード

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
#pragma GCC optimize("Ofast")
#include "bits/stdc++.h"
// Begin Header {{{
#pragma region
using namespace std;
#ifndef DEBUG
#define dump(...)
#endif
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define rep(i, b, e) for (intmax_t i = (b), i##_limit = (e); i < i##_limit; ++i)
#define repc(i, b, e) for (intmax_t i = (b), i##_limit = (e); i <= i##_limit; ++i)
#define repr(i, b, e) for (intmax_t i = (b), i##_limit = (e); i >= i##_limit; --i)
#define var(Type, ...) Type __VA_ARGS__; input(__VA_ARGS__)
#define let const auto
constexpr size_t operator""_zu(unsigned long long value) { return value; };
constexpr intmax_t operator""_jd(unsigned long long value) { return value; };
constexpr uintmax_t operator""_ju(unsigned long long value) { return value; };
constexpr int INF = 0x3f3f3f3f;
constexpr intmax_t LINF = 0x3f3f3f3f3f3f3f3f_jd;
using usize = size_t;
using imax = intmax_t;
using uimax = uintmax_t;
using ld = long double;
template <class T, class Compare = less<>>
using MaxHeap = priority_queue<T, vector<T>, Compare>;
template <class T, class Compare = greater<>>
using MinHeap = priority_queue<T, vector<T>, Compare>;
inline void input() {}
template <class Head, class... Tail>
inline void input(Head&& head, Tail&&... tail) {
cin >> head;
input(forward<Tail>(tail)...);
}
template <class Container, class Value = typename Container::value_type,
enable_if_t<!is_same<Container, string>::value, nullptr_t> = nullptr>
inline istream& operator>>(istream &is, Container &vs) {
for (auto &v: vs) is >> v;
return is;
}
template <class T, class U>
inline istream& operator>>(istream &is, pair<T, U> &p) {
is >> p.first >> p.second;
return is;
}
inline void output() { cout << "\n"; }
template <class Head, class... Tail>
inline void output(Head&& head, Tail&&... tail) {
cout << head;
if (sizeof...(tail)) cout << " ";
output(forward<Tail>(tail)...);
}
template <class Container, class Value = typename Container::value_type,
enable_if_t<!is_same<Container, string>::value, nullptr_t> = nullptr>
inline ostream& operator<<(ostream &os, const Container &vs) {
static constexpr const char *delim[] = {" ", ""};
for (auto it = begin(vs); it != end(vs); ++it) {
os << delim[it == begin(vs)] << *it;
}
return os;
}
template <class Iterator>
inline void join(const Iterator &Begin, const Iterator &End, const string &delim = "\n", const string &last = "\n") {
for (auto it = Begin; it != End; ++it) {
cout << ((it == Begin) ? "" : delim) << *it;
}
cout << last;
}
template <class T>
inline vector<T> makeVector(const T &init_value, size_t sz) {
return vector<T>(sz, init_value);
}
template <class T, class... Args>
inline auto makeVector(const T &init_value, size_t sz, Args... args) {
return vector<decltype(makeVector<T>(init_value, args...))>(sz, makeVector<T>(init_value, args...));
}
template <class Func>
class FixPoint : Func {
public:
explicit constexpr FixPoint(Func&& f) noexcept : Func(forward<Func>(f)) {}
template <class... Args>
constexpr decltype(auto) operator()(Args&&... args) const {
return Func::operator()(*this, std::forward<Args>(args)...);
}
};
template <class Func>
static inline constexpr decltype(auto) makeFixPoint(Func&& f) noexcept {
return FixPoint<Func>{forward<Func>(f)};
}
template <class Container>
struct reverse_t {
Container &c;
reverse_t(Container &c) : c(c) {}
auto begin() { return c.rbegin(); }
auto end() { return c.rend(); }
};
template <class Container>
auto reversed(Container &c) {
return reverse_t<Container>(c);
}
template <class T>
inline bool chmax(T &a, const T &b) noexcept {
return b > a && (a = b, true);
}
template <class T>
inline bool chmin(T &a, const T &b) noexcept {
return b < a && (a = b, true);
}
template <class T>
inline T diff(const T &a, const T &b) noexcept {
return a < b ? b - a : a - b;
}
void operator|=(vector<bool>::reference lhs, const bool rhs) {
lhs = lhs | rhs;
}
void operator&=(vector<bool>::reference lhs, const bool rhs) {
lhs = lhs & rhs;
}
void operator^=(vector<bool>::reference lhs, const bool rhs) {
lhs = lhs ^ rhs;
}
void ioinit() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout << fixed << setprecision(10);
cerr << fixed << setprecision(10);
clog << fixed << setprecision(10);
}
#pragma endregion
// }}} End Header
const auto ceildiv = [](intmax_t n, intmax_t d) { return (n + d - 1) / d; };
signed main() {
ioinit();
var(imax, N, M, K);
var(imax, P);
vector<imax> ls(P), rs(P), cs(P);
rep(i, 0, P) {
input(ls[i], rs[i], cs[i]);
}
using Tp = array<imax, 3>;
vector<Tp> ranges;
// (l, r, c)
if (ls.front() != 1) ranges.emplace_back(Tp{1, ls.front() - 1, M});
rep(i, 0, P) {
if (i > 0 && ls[i] != rs[i - 1] + 1) {
ranges.emplace_back(Tp{rs[i - 1] + 1, ls[i] - 1, M});
}
ranges.emplace_back(Tp{ls[i], rs[i], cs[i]});
}
if (rs.back() != N) ranges.emplace_back(Tp{rs.back() + 1, N, M});
let solve = [&](auto vs) {
const int R = ranges.size();
imax r = 0;
imax sum = 0, days = 0, res = LINF;
rep(l, 0, R) {
while (r < R && sum < K) {
imax len = vs[r][1] - vs[r][0] + 1;
sum += vs[r][2] * len;
days += len;
r++;
}
if (sum < K) break;
imax len = vs[r - 1][1] - vs[r - 1][0] + 1;
sum -= vs[r - 1][2] * len;
days -= len;
imax rest = K - sum;
chmin(res, days + ceildiv(rest, vs[r - 1][2]));
dump(l, r, sum, days, res);
sum += vs[r - 1][2] * len;
days += len;
len = vs[l][1] - vs[l][0] + 1;
sum -= vs[l][2] * len;
days -= len;
if (l == r) r++;
}
return res;
};
imax res = LINF;
for (let [l, r, c]: ranges) dump(l, r, c);
chmin(res, solve(ranges));
reverse(all(ranges));
for (auto&& [l, r, c]: ranges) {
swap(l, r);
l = N - l + 1;
r = N - r + 1;
}
for (let [l, r, c]: ranges) dump(l, r, c);
chmin(res, solve(ranges));
output(res);
return 0;
}

ステータス

項目 データ
問題 1493 - Sand of Star
ユーザー名 syoribu
投稿日時 2021-05-02 23:49:46
言語 C++17
状態 Accepted
得点 500
ソースコード長 6559 Byte
最大実行時間 58 ms
最大メモリ使用量 13024 KB

セット

セット 得点 Cases
1 ALL 500 / 500 *

テストケース

ファイル名 状態 実行時間 メモリ使用量 #
hand_made01.txt AC 22 ms 600 KB
1
hand_made02.txt AC 19 ms 420 KB
1
hand_made03.txt AC 46 ms 13024 KB
1
hand_made04.txt AC 17 ms 544 KB
1
hand_made05.txt AC 20 ms 496 KB
1
in01.txt AC 42 ms 7096 KB
1
in02.txt AC 49 ms 11408 KB
1
in03.txt AC 29 ms 5360 KB
1
in04.txt AC 49 ms 10160 KB
1
in05.txt AC 36 ms 5776 KB
1
in06.txt AC 35 ms 6080 KB
1
in07.txt AC 36 ms 6120 KB
1
in08.txt AC 58 ms 11548 KB
1
in09.txt AC 26 ms 3776 KB
1
in10.txt AC 43 ms 8656 KB
1
in11.txt AC 26 ms 1116 KB
1
in12.txt AC 22 ms 2312 KB
1
in13.txt AC 31 ms 4372 KB
1
in14.txt AC 44 ms 11772 KB
1
in15.txt AC 47 ms 11108 KB
1
in16.txt AC 25 ms 3672 KB
1
in17.txt AC 44 ms 7320 KB
1
in18.txt AC 45 ms 11420 KB
1
in19.txt AC 31 ms 2044 KB
1
in20.txt AC 49 ms 8272 KB
1
in21.txt AC 34 ms 4272 KB
1
in22.txt AC 52 ms 11900 KB
1
in23.txt AC 22 ms 2140 KB
1
in24.txt AC 34 ms 6156 KB
1
in25.txt AC 30 ms 5292 KB
1
in26.txt AC 40 ms 11056 KB
1
in27.txt AC 44 ms 11488 KB
1
in28.txt AC 22 ms 3516 KB
1
in29.txt AC 49 ms 10464 KB
1
in30.txt AC 50 ms 10040 KB
1
sample01.txt AC 26 ms 680 KB
1
sample02.txt AC 17 ms 760 KB
1