#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
template <class T>
void read(T &x)
{
x = 0;
register int c;
while ((c = getchar()) && (c > '9' || c < '0'))
;
for (; c >= '0' && c <= '9'; c = getchar())
x = x * 10 + c - '0';
}
constexpr bool typetest = 0;
constexpr int N = 2e5 + 5;
// Obvious: We only increase/decrease prefix or suffix
struct FenwickTree
{
int n, a[N];
void Update(int p, int v)
{
if (p == 0)
return;
for (; p <= n; p += p & -p)
a[p] = max(a[p], v);
}
int Get(int p)
{
int ans(0);
for (; p > 0; p -= p & -p)
ans = max(ans, a[p]);
return ans;
}
} f, g;
int n, m;
ll a[N], x, b[N];
void Read()
{
cin >> n >> x;
for (int i = 1; i <= n; ++i)
{
cin >> a[i];
b[i] = a[i];
}
}
void Solve()
{
sort(b + 1, b + n + 1);
m = unique(b + 1, b + n + 1) - b - 1;
f.n = g.n = m;
#define Find(x, v) (lower_bound(x + 1, x + m + 1, v) - x)
for (int i = 1; i <= n; ++i)
{
int u = Find(b, a[i]) - 1,
v = Find(b, a[i] + x) - 1;
int p = f.Get(u),
q = f.Get(v),
r = g.Get(u);
f.Update(u + 1, p + 1);
g.Update(u + 1, max(q, r) + 1);
}
cout << g.Get(m);
}
int32_t main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
if (fopen("xor.INP", "r"))
{
freopen("xor.inp", "r", stdin);
freopen("xor.out", "w", stdout);
}
int t(1);
if (typetest)
cin >> t;
for (int _ = 1; _ <= t; ++_)
{
// cout << "Case #" << _ << ": ";
Read();
Solve();
}
// cerr << "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";
}
Compilation message
glo.cpp: In function 'void read(T&)':
glo.cpp:12:18: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
12 | register int c;
| ^
glo.cpp: In function 'int32_t main()':
glo.cpp:86:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
86 | freopen("xor.inp", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
glo.cpp:87:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
87 | freopen("xor.out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
332 KB |
Output is correct |
6 |
Correct |
0 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
332 KB |
Output is correct |
6 |
Correct |
0 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
320 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
0 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
1 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
332 KB |
Output is correct |
6 |
Correct |
0 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
320 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
0 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
1 ms |
332 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 |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
324 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
332 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 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
97 ms |
4980 KB |
Output is correct |
2 |
Correct |
104 ms |
4992 KB |
Output is correct |
3 |
Correct |
125 ms |
4996 KB |
Output is correct |
4 |
Correct |
99 ms |
4988 KB |
Output is correct |
5 |
Correct |
59 ms |
4196 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
26 ms |
1472 KB |
Output is correct |
2 |
Correct |
23 ms |
1412 KB |
Output is correct |
3 |
Correct |
22 ms |
1484 KB |
Output is correct |
4 |
Correct |
18 ms |
1228 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
13 ms |
1484 KB |
Output is correct |
7 |
Correct |
22 ms |
1996 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
40 ms |
2680 KB |
Output is correct |
2 |
Correct |
38 ms |
2668 KB |
Output is correct |
3 |
Correct |
92 ms |
5100 KB |
Output is correct |
4 |
Correct |
57 ms |
4184 KB |
Output is correct |
5 |
Correct |
26 ms |
3180 KB |
Output is correct |
6 |
Correct |
45 ms |
5444 KB |
Output is correct |
7 |
Correct |
48 ms |
5404 KB |
Output is correct |
8 |
Correct |
37 ms |
3372 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
332 KB |
Output is correct |
6 |
Correct |
0 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
320 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
0 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
1 ms |
332 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 |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
324 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
332 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 |
97 ms |
4980 KB |
Output is correct |
28 |
Correct |
104 ms |
4992 KB |
Output is correct |
29 |
Correct |
125 ms |
4996 KB |
Output is correct |
30 |
Correct |
99 ms |
4988 KB |
Output is correct |
31 |
Correct |
59 ms |
4196 KB |
Output is correct |
32 |
Correct |
26 ms |
1472 KB |
Output is correct |
33 |
Correct |
23 ms |
1412 KB |
Output is correct |
34 |
Correct |
22 ms |
1484 KB |
Output is correct |
35 |
Correct |
18 ms |
1228 KB |
Output is correct |
36 |
Correct |
1 ms |
332 KB |
Output is correct |
37 |
Correct |
13 ms |
1484 KB |
Output is correct |
38 |
Correct |
22 ms |
1996 KB |
Output is correct |
39 |
Correct |
40 ms |
2680 KB |
Output is correct |
40 |
Correct |
38 ms |
2668 KB |
Output is correct |
41 |
Correct |
92 ms |
5100 KB |
Output is correct |
42 |
Correct |
57 ms |
4184 KB |
Output is correct |
43 |
Correct |
26 ms |
3180 KB |
Output is correct |
44 |
Correct |
45 ms |
5444 KB |
Output is correct |
45 |
Correct |
48 ms |
5404 KB |
Output is correct |
46 |
Correct |
37 ms |
3372 KB |
Output is correct |
47 |
Correct |
48 ms |
3268 KB |
Output is correct |
48 |
Correct |
48 ms |
3320 KB |
Output is correct |
49 |
Correct |
124 ms |
5660 KB |
Output is correct |
50 |
Correct |
51 ms |
4932 KB |
Output is correct |
51 |
Correct |
42 ms |
4072 KB |
Output is correct |
52 |
Correct |
63 ms |
5608 KB |
Output is correct |
53 |
Correct |
54 ms |
5616 KB |
Output is correct |
54 |
Correct |
61 ms |
5684 KB |
Output is correct |
55 |
Correct |
94 ms |
5828 KB |
Output is correct |