Submission #522077

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
522077	2022-02-03T18:44:01 Z	LucaDantas	Global Warming (CEOI18_glo)	C++17	100 / 100	619 ms	12120 KB

#include <cstdio>
#include <cstring>
#include <map>
#include <algorithm>

constexpr int maxn = 2e5+10;
constexpr unsigned int maxT = 0x7fffffff;

int coord = 0;
std::map<int,int> mp;

void build() {
	coord = 0;
	for(auto& x : mp)
		x.second = ++coord;
}

int norm(int x) {
	auto k = mp.upper_bound(x);
	if(k == mp.end()) return coord;
	return k->second-1;
}

struct BIT {
	int bit[maxn];
	void upd(int x, int v) {
		x = norm(x);
		for(x++; x < maxn; x += x&-x)
			bit[x] = std::max(bit[x], v);
	}
	int query(int x) {
		int ans = 0;
		x = norm(x);
		for(x++; x > 0; x -= x&-x)
			ans = std::max(ans, bit[x]);
		return ans;
	}
	void clear() { memset(bit, 0, sizeof bit); }
} bit;

int t[maxn], dp[maxn], max_temp;

int main() {
	int n, x; scanf("%d %d", &n, &x);
	for(int i = 0; i < n; i++)
		scanf("%d", t+i), max_temp = std::max(max_temp, t[i]), mp[t[i]] = 0;
	build();

	for(int i = 0; i < n; i++) {
		dp[i] = bit.query(t[i]-1)+1;
		bit.upd(t[i], dp[i]);
	}

	bit.clear();

	int ans = 0;
	std::reverse(t, t+n);
	std::reverse(dp, dp+n);
	mp.clear();
	for(int i = 0; i < n; i++)
		t[i] = max_temp - t[i] + 1, mp[t[i]] = 0;
	build();

	for(int i = 0; i < n; i++) {
		ans = std::max(ans, dp[i] + bit.query(t[i] + x - 1));
		bit.upd(t[i], bit.query(t[i]-1)+1);
	}

	printf("%d\n", ans);
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:44:17: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |  int n, x; scanf("%d %d", &n, &x);
      |            ~~~~~^~~~~~~~~~~~~~~~~
glo.cpp:46:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |   scanf("%d", t+i), max_temp = std::max(max_temp, t[i]), mp[t[i]] = 0;
      |   ~~~~~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	972 KB	Output is correct
2	Correct	1 ms	972 KB	Output is correct
3	Correct	1 ms	972 KB	Output is correct
4	Correct	1 ms	972 KB	Output is correct
5	Correct	1 ms	972 KB	Output is correct
6	Correct	1 ms	972 KB	Output is correct
7	Correct	1 ms	972 KB	Output is correct
8	Correct	1 ms	972 KB	Output is correct
9	Correct	1 ms	972 KB	Output is correct
10	Correct	1 ms	972 KB	Output is correct
11	Correct	1 ms	1016 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	972 KB	Output is correct
2	Correct	1 ms	972 KB	Output is correct
3	Correct	1 ms	972 KB	Output is correct
4	Correct	1 ms	972 KB	Output is correct
5	Correct	1 ms	972 KB	Output is correct
6	Correct	1 ms	972 KB	Output is correct
7	Correct	1 ms	972 KB	Output is correct
8	Correct	1 ms	972 KB	Output is correct
9	Correct	1 ms	972 KB	Output is correct
10	Correct	1 ms	972 KB	Output is correct
11	Correct	1 ms	1016 KB	Output is correct
12	Correct	1 ms	972 KB	Output is correct
13	Correct	1 ms	972 KB	Output is correct
14	Correct	1 ms	972 KB	Output is correct
15	Correct	1 ms	972 KB	Output is correct
16	Correct	1 ms	972 KB	Output is correct
17	Correct	1 ms	972 KB	Output is correct
18	Correct	1 ms	972 KB	Output is correct

Subtask #3
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	972 KB	Output is correct
2	Correct	1 ms	972 KB	Output is correct
3	Correct	1 ms	972 KB	Output is correct
4	Correct	1 ms	972 KB	Output is correct
5	Correct	1 ms	972 KB	Output is correct
6	Correct	1 ms	972 KB	Output is correct
7	Correct	1 ms	972 KB	Output is correct
8	Correct	1 ms	972 KB	Output is correct
9	Correct	1 ms	972 KB	Output is correct
10	Correct	1 ms	972 KB	Output is correct
11	Correct	1 ms	1016 KB	Output is correct
12	Correct	1 ms	972 KB	Output is correct
13	Correct	1 ms	972 KB	Output is correct
14	Correct	1 ms	972 KB	Output is correct
15	Correct	1 ms	972 KB	Output is correct
16	Correct	1 ms	972 KB	Output is correct
17	Correct	1 ms	972 KB	Output is correct
18	Correct	1 ms	972 KB	Output is correct
19	Correct	2 ms	1100 KB	Output is correct
20	Correct	2 ms	1100 KB	Output is correct
21	Correct	3 ms	1100 KB	Output is correct
22	Correct	2 ms	1100 KB	Output is correct
23	Correct	1 ms	1100 KB	Output is correct
24	Correct	1 ms	1100 KB	Output is correct
25	Correct	1 ms	1100 KB	Output is correct
26	Correct	1 ms	1100 KB	Output is correct

Subtask #4
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	506 ms	11948 KB	Output is correct
2	Correct	532 ms	11932 KB	Output is correct
3	Correct	513 ms	11996 KB	Output is correct
4	Correct	502 ms	12004 KB	Output is correct
5	Correct	159 ms	7308 KB	Output is correct

Subtask #5
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	72 ms	3700 KB	Output is correct
2	Correct	72 ms	3780 KB	Output is correct
3	Correct	75 ms	3788 KB	Output is correct
4	Correct	33 ms	2620 KB	Output is correct
5	Correct	1 ms	972 KB	Output is correct
6	Correct	33 ms	2616 KB	Output is correct
7	Correct	53 ms	3788 KB	Output is correct

Subtask #6
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	207 ms	6528 KB	Output is correct
2	Correct	156 ms	6440 KB	Output is correct
3	Correct	505 ms	12000 KB	Output is correct
4	Correct	169 ms	7256 KB	Output is correct
5	Correct	89 ms	6448 KB	Output is correct
6	Correct	167 ms	11460 KB	Output is correct
7	Correct	183 ms	11472 KB	Output is correct
8	Correct	149 ms	6436 KB	Output is correct

Subtask #7
25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	972 KB	Output is correct
2	Correct	1 ms	972 KB	Output is correct
3	Correct	1 ms	972 KB	Output is correct
4	Correct	1 ms	972 KB	Output is correct
5	Correct	1 ms	972 KB	Output is correct
6	Correct	1 ms	972 KB	Output is correct
7	Correct	1 ms	972 KB	Output is correct
8	Correct	1 ms	972 KB	Output is correct
9	Correct	1 ms	972 KB	Output is correct
10	Correct	1 ms	972 KB	Output is correct
11	Correct	1 ms	1016 KB	Output is correct
12	Correct	1 ms	972 KB	Output is correct
13	Correct	1 ms	972 KB	Output is correct
14	Correct	1 ms	972 KB	Output is correct
15	Correct	1 ms	972 KB	Output is correct
16	Correct	1 ms	972 KB	Output is correct
17	Correct	1 ms	972 KB	Output is correct
18	Correct	1 ms	972 KB	Output is correct
19	Correct	2 ms	1100 KB	Output is correct
20	Correct	2 ms	1100 KB	Output is correct
21	Correct	3 ms	1100 KB	Output is correct
22	Correct	2 ms	1100 KB	Output is correct
23	Correct	1 ms	1100 KB	Output is correct
24	Correct	1 ms	1100 KB	Output is correct
25	Correct	1 ms	1100 KB	Output is correct
26	Correct	1 ms	1100 KB	Output is correct
27	Correct	506 ms	11948 KB	Output is correct
28	Correct	532 ms	11932 KB	Output is correct
29	Correct	513 ms	11996 KB	Output is correct
30	Correct	502 ms	12004 KB	Output is correct
31	Correct	159 ms	7308 KB	Output is correct
32	Correct	72 ms	3700 KB	Output is correct
33	Correct	72 ms	3780 KB	Output is correct
34	Correct	75 ms	3788 KB	Output is correct
35	Correct	33 ms	2620 KB	Output is correct
36	Correct	1 ms	972 KB	Output is correct
37	Correct	33 ms	2616 KB	Output is correct
38	Correct	53 ms	3788 KB	Output is correct
39	Correct	207 ms	6528 KB	Output is correct
40	Correct	156 ms	6440 KB	Output is correct
41	Correct	505 ms	12000 KB	Output is correct
42	Correct	169 ms	7256 KB	Output is correct
43	Correct	89 ms	6448 KB	Output is correct
44	Correct	167 ms	11460 KB	Output is correct
45	Correct	183 ms	11472 KB	Output is correct
46	Correct	149 ms	6436 KB	Output is correct
47	Correct	215 ms	6468 KB	Output is correct
48	Correct	170 ms	6532 KB	Output is correct
49	Correct	619 ms	11908 KB	Output is correct
50	Correct	159 ms	7264 KB	Output is correct
51	Correct	115 ms	6796 KB	Output is correct
52	Correct	218 ms	12120 KB	Output is correct
53	Correct	179 ms	11972 KB	Output is correct
54	Correct	192 ms	12120 KB	Output is correct
55	Correct	274 ms	11888 KB	Output is correct

Submission #522077

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 13.0 / 13.0

Subtask #4 10.0 / 10.0

Subtask #5 20.0 / 20.0

Subtask #6 17.0 / 17.0

Subtask #7 25.0 / 25.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
13.0 / 13.0

Subtask #4
10.0 / 10.0

Subtask #5
20.0 / 20.0

Subtask #6
17.0 / 17.0

Subtask #7
25.0 / 25.0