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Submission #1111921

# Submission time Handle Problem Language Result Execution time Memory
1111921 2024-11-13T10:39:03 Z vjudge1 Global Warming (CEOI18_glo) C++17
100 / 100
 44 ms 4452 KB 
#include<bits/stdc++.h>
using namespace std;

const bool multiTest = false;
#define task "C"
#define fi first
#define se second
#define MASK(i) (1LL << (i))
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define BIT(mask, i) ((mask) >> (i) & 1)

template<typename T1, typename T2> bool minimize(T1 &a, T2 b) {
	if (a > b) a = b; else return 0; return 1;
}
template<typename T1, typename T2> bool maximize(T1 &a, T2 b) {
	if (a < b) a = b; else return 0; return 1;
}

const int MAX = 200020;
int n, x;
int t[MAX];
int f[MAX];


void process(void) {
	cin >> n >> x;
	for (int i = 1; i <= n; ++i) {
		cin >> t[i];
	}
	vector<int> dp;
	for (int i = 1; i <= n; ++i) {
		int pos = lower_bound(all(dp), t[i]) - dp.begin();
		if (dp.size() == pos) dp.push_back(t[i]);
		else dp[pos] = t[i];
		f[i] = pos + 1;
	}
	int res = *max_element(f + 1, f + 1 + n);
	dp.clear();
	for (int i = n; i >= 1; --i) {
		int pos = lower_bound(all(dp), x - t[i]) - dp.begin();
		maximize(res, pos + f[i]);

		pos = lower_bound(all(dp), -t[i]) - dp.begin();
		if (dp.size() == pos) dp.push_back(-t[i]);
		else dp[pos] = -t[i];
	}
	cout << res;
}

int main(void) {
	ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
	if (fopen(task".inp", "r")) {
		freopen(task".inp", "r",  stdin);
		freopen(task".out", "w", stdout);
	}

	int nTest = 1; if (multiTest) cin >> nTest;
	while (nTest--) {
		process();
	}

	return 0;
}

Compilation message

glo.cpp: In function 'void process()':
glo.cpp:34:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   34 |   if (dp.size() == pos) dp.push_back(t[i]);
      |       ~~~~~~~~~~^~~~~~
glo.cpp:45:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   45 |   if (dp.size() == pos) dp.push_back(-t[i]);
      |       ~~~~~~~~~~^~~~~~
glo.cpp: In function 'int main()':
glo.cpp:54:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |   freopen(task".inp", "r",  stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
glo.cpp:55:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |   freopen(task".out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 508 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 1916 KB Output is correct
2 Correct 44 ms 3912 KB Output is correct
3 Correct 37 ms 3912 KB Output is correct
4 Correct 38 ms 3920 KB Output is correct
5 Correct 21 ms 3588 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 848 KB Output is correct
2 Correct 10 ms 1104 KB Output is correct
3 Correct 12 ms 1104 KB Output is correct
4 Correct 6 ms 1360 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 6 ms 1360 KB Output is correct
7 Correct 9 ms 1164 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 1104 KB Output is correct
2 Correct 18 ms 2224 KB Output is correct
3 Correct 36 ms 3824 KB Output is correct
4 Correct 22 ms 3540 KB Output is correct
5 Correct 12 ms 2004 KB Output is correct
6 Correct 18 ms 3536 KB Output is correct
7 Correct 23 ms 4308 KB Output is correct
8 Correct 15 ms 2128 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 508 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 37 ms 1916 KB Output is correct
28 Correct 44 ms 3912 KB Output is correct
29 Correct 37 ms 3912 KB Output is correct
30 Correct 38 ms 3920 KB Output is correct
31 Correct 21 ms 3588 KB Output is correct
32 Correct 9 ms 848 KB Output is correct
33 Correct 10 ms 1104 KB Output is correct
34 Correct 12 ms 1104 KB Output is correct
35 Correct 6 ms 1360 KB Output is correct
36 Correct 1 ms 336 KB Output is correct
37 Correct 6 ms 1360 KB Output is correct
38 Correct 9 ms 1164 KB Output is correct
39 Correct 18 ms 1104 KB Output is correct
40 Correct 18 ms 2224 KB Output is correct
41 Correct 36 ms 3824 KB Output is correct
42 Correct 22 ms 3540 KB Output is correct
43 Correct 12 ms 2004 KB Output is correct
44 Correct 18 ms 3536 KB Output is correct
45 Correct 23 ms 4308 KB Output is correct
46 Correct 15 ms 2128 KB Output is correct
47 Correct 21 ms 2128 KB Output is correct
48 Correct 18 ms 2128 KB Output is correct
49 Correct 37 ms 3920 KB Output is correct
50 Correct 21 ms 3540 KB Output is correct
51 Correct 21 ms 3024 KB Output is correct
52 Correct 22 ms 3792 KB Output is correct
53 Correct 32 ms 3788 KB Output is correct
54 Correct 24 ms 4452 KB Output is correct
55 Correct 31 ms 3928 KB Output is correct