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Submission #470289

# Submission time Handle Problem Language Result Execution time Memory
470289 2021-09-03T11:28:32 Z mychecksedad Global Warming (CEOI18_glo) C++17
100 / 100
 64 ms 5848 KB 
#include<bits/stdc++.h>
using namespace std;
const int N = 2e5 + 10;
typedef long long int ll;
#define pb push_back
int n, ans = 0;
ll arr[N], x, dp[N];
int main(){
	cin.tie(0); ios::sync_with_stdio(0);
	cin >> n >> x;
	for(int i = 1; i <= n; i++) cin >> arr[i];
	vector<int> lis(1, 0);
	for(int j = 1; j <= n; j++){
		int pos = lower_bound(lis.begin(), lis.end(), arr[j]) - lis.begin();
		if(pos == int(lis.size())) lis.pb(arr[j]);
		else lis[pos] = arr[j];
		dp[j] = pos;
	}
	lis.clear();
	lis.pb(-1e9);
	for(int i = n; i >= 1; i--){
		int new_pos = lower_bound(lis.begin(), lis.end(), -(arr[i] - x)) - lis.begin();
		ans = max(ll(dp[i] + new_pos)-1, ll(ans));
		int pos = lower_bound(lis.begin(), lis.end(), -arr[i]) - lis.begin();
		if(pos == lis.size()) lis.pb(-arr[i]);
		else lis[pos] = -arr[i];
	}
	cout << ans;



	return 0;
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:25:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |   if(pos == lis.size()) lis.pb(-arr[i]);
      |      ~~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 216 KB Output is correct
17 Correct 1 ms 320 KB Output is correct
18 Correct 1 ms 332 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 216 KB Output is correct
17 Correct 1 ms 320 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 324 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 3524 KB Output is correct
2 Correct 60 ms 3436 KB Output is correct
3 Correct 56 ms 3436 KB Output is correct
4 Correct 57 ms 3376 KB Output is correct
5 Correct 35 ms 3832 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 1092 KB Output is correct
2 Correct 13 ms 1112 KB Output is correct
3 Correct 14 ms 1068 KB Output is correct
4 Correct 10 ms 1300 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 10 ms 1612 KB Output is correct
7 Correct 12 ms 1488 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 1868 KB Output is correct
2 Correct 27 ms 2832 KB Output is correct
3 Correct 55 ms 5256 KB Output is correct
4 Correct 37 ms 5060 KB Output is correct
5 Correct 19 ms 2768 KB Output is correct
6 Correct 34 ms 4900 KB Output is correct
7 Correct 37 ms 5580 KB Output is correct
8 Correct 23 ms 2864 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 216 KB Output is correct
17 Correct 1 ms 320 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 324 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 63 ms 3524 KB Output is correct
28 Correct 60 ms 3436 KB Output is correct
29 Correct 56 ms 3436 KB Output is correct
30 Correct 57 ms 3376 KB Output is correct
31 Correct 35 ms 3832 KB Output is correct
32 Correct 13 ms 1092 KB Output is correct
33 Correct 13 ms 1112 KB Output is correct
34 Correct 14 ms 1068 KB Output is correct
35 Correct 10 ms 1300 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 10 ms 1612 KB Output is correct
38 Correct 12 ms 1488 KB Output is correct
39 Correct 26 ms 1868 KB Output is correct
40 Correct 27 ms 2832 KB Output is correct
41 Correct 55 ms 5256 KB Output is correct
42 Correct 37 ms 5060 KB Output is correct
43 Correct 19 ms 2768 KB Output is correct
44 Correct 34 ms 4900 KB Output is correct
45 Correct 37 ms 5580 KB Output is correct
46 Correct 23 ms 2864 KB Output is correct
47 Correct 27 ms 2808 KB Output is correct
48 Correct 31 ms 2820 KB Output is correct
49 Correct 64 ms 5352 KB Output is correct
50 Correct 36 ms 5112 KB Output is correct
51 Correct 30 ms 4036 KB Output is correct
52 Correct 43 ms 5216 KB Output is correct
53 Correct 31 ms 5204 KB Output is correct
54 Correct 42 ms 5848 KB Output is correct
55 Correct 51 ms 5308 KB Output is correct