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Submission #259883

# Submission time Handle Problem Language Result Execution time Memory
259883 2020-08-08T18:47:13 Z peuch Global Warming (CEOI18_glo) C++17
100 / 100
 83 ms 4676 KB 
#include<bits/stdc++.h>
using namespace std;

const int MAXN = 2e5 + 10;
const int INF = 2e9 + 7;

int n, x;
int v[MAXN];
int dp[MAXN];
int maxi[MAXN];
int ans;

int main(){
	scanf("%d %d", &n, &x);
	for(int i = 1; i <= n; i++)
	scanf("%d", &v[i]);
	for(int j = 1; j <= n; j++)
		dp[j] = INF;
	for(int i = 1; i <= n; i++){
		int k = lower_bound(dp, dp + 1 + n, v[i]) - dp;
		dp[k] = v[i];
		maxi[i] = k;
		ans = max(ans, k);
	}
	for(int j = 1; j <= n; j++)
		dp[j] = INF;
	dp[0] = -INF;
	for(int i = n; i > 0; i--){
		int aux = lower_bound(dp, dp + 1 + n, -v[i]) - dp;
		aux--;
		int k = lower_bound(dp, dp + 1 + n, -v[i] - x) - dp;
		dp[k] = -v[i] - x;
		ans = max(ans, maxi[i] + aux);
		ans = max(ans, k);
	}
	printf("%d\n", ans);
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &x);
  ~~~~~^~~~~~~~~~~~~~~~~
glo.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &v[i]);
  ~~~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 0 ms 384 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 2680 KB Output is correct
2 Correct 80 ms 2680 KB Output is correct
3 Correct 81 ms 2680 KB Output is correct
4 Correct 83 ms 2680 KB Output is correct
5 Correct 65 ms 2680 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 896 KB Output is correct
2 Correct 20 ms 896 KB Output is correct
3 Correct 19 ms 896 KB Output is correct
4 Correct 16 ms 896 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 15 ms 1152 KB Output is correct
7 Correct 26 ms 1408 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 1656 KB Output is correct
2 Correct 36 ms 1536 KB Output is correct
3 Correct 74 ms 2808 KB Output is correct
4 Correct 63 ms 2680 KB Output is correct
5 Correct 30 ms 1536 KB Output is correct
6 Correct 51 ms 2552 KB Output is correct
7 Correct 62 ms 2552 KB Output is correct
8 Correct 33 ms 1560 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 80 ms 2680 KB Output is correct
28 Correct 80 ms 2680 KB Output is correct
29 Correct 81 ms 2680 KB Output is correct
30 Correct 83 ms 2680 KB Output is correct
31 Correct 65 ms 2680 KB Output is correct
32 Correct 21 ms 896 KB Output is correct
33 Correct 20 ms 896 KB Output is correct
34 Correct 19 ms 896 KB Output is correct
35 Correct 16 ms 896 KB Output is correct
36 Correct 1 ms 384 KB Output is correct
37 Correct 15 ms 1152 KB Output is correct
38 Correct 26 ms 1408 KB Output is correct
39 Correct 55 ms 1656 KB Output is correct
40 Correct 36 ms 1536 KB Output is correct
41 Correct 74 ms 2808 KB Output is correct
42 Correct 63 ms 2680 KB Output is correct
43 Correct 30 ms 1536 KB Output is correct
44 Correct 51 ms 2552 KB Output is correct
45 Correct 62 ms 2552 KB Output is correct
46 Correct 33 ms 1560 KB Output is correct
47 Correct 40 ms 2432 KB Output is correct
48 Correct 40 ms 2424 KB Output is correct
49 Correct 82 ms 4600 KB Output is correct
50 Correct 68 ms 3920 KB Output is correct
51 Correct 49 ms 2968 KB Output is correct
52 Correct 62 ms 3960 KB Output is correct
53 Correct 56 ms 4088 KB Output is correct
54 Correct 61 ms 4676 KB Output is correct
55 Correct 73 ms 4600 KB Output is correct