CSES - Datatähti 2021 alku

Submission details
Task:	Alitaulukot
Sender:	jubidubi
Submission time:	2020-09-28 14:08:45 +0300
Language:	C++ (C++11)
Status:	READY
Result:	37

Feedback
group	verdict	score
#1	ACCEPTED	11
#2	ACCEPTED	26
#3	RUNTIME ERROR	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.01 s	1, 2, 3	details
#2	ACCEPTED	0.01 s	1, 2, 3	details
#3	ACCEPTED	0.01 s	1, 2, 3	details
#4	ACCEPTED	0.01 s	1, 2, 3	details
#5	ACCEPTED	0.01 s	1, 2, 3	details
#6	ACCEPTED	0.01 s	2, 3	details
#7	ACCEPTED	0.01 s	2, 3	details
#8	ACCEPTED	0.01 s	2, 3	details
#9	ACCEPTED	0.01 s	2, 3	details
#10	ACCEPTED	0.01 s	2, 3	details
#11	RUNTIME ERROR	0.02 s	3	details
#12	RUNTIME ERROR	0.02 s	3	details
#13	RUNTIME ERROR	0.02 s	3	details
#14	RUNTIME ERROR	0.03 s	3	details
#15	RUNTIME ERROR	0.03 s	3	details
#16	RUNTIME ERROR	0.02 s	3	details
#17	RUNTIME ERROR	0.03 s	3	details

Code

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

const int N = 1 << 17;
ll dp[N];
ll d[N][2];

void change(int k, ll x) {
	k += N;
	d[k][0] = x;
	d[k][1] = x;
	for (k /= 2; k >= 1; k /= 2) {
		d[k][0] = min(d[k*2][0], d[k*2+1][0]);
		d[k][1] = max(d[k*2][1], d[k*2+1][1]);
	}
}

ll mn(int a, int b) {
	a += N;
	b += N;

	ll m = 1e18;
	while (a <= b) {
		if (a % 2 == 1) m = min(m, d[a++][0]);
		if (b % 2 == 0) m = min(m, d[b--][0]);
		a /= 2;
		b /= 2;
	}
	return m;
}

ll mx(int a, int b) {
	a += N;
	b += N;

	ll m = 0;
	while (a <= b) {
		if (a % 2 == 1) m = max(m, d[a++][1]);
		if (b % 2 == 0) m = max(m, d[b--][1]);
		a /= 2;
		b /= 2;
	}
	return m;
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);

	int n, k;
	cin >> n >> k;

	vector<ll> v(n);
	for (int i = 0; i < n; ++i) cin >> v[i];
	for (int i = 0; i < n; ++i) change(i, v[i]);

	for (int i = 0; i <= n; ++i) {
		if (i == n || mx(0, i)-mn(0, i) > k) {
			dp[0] = i;
			break;
		}
	}

	ll r = dp[0];

	for (int a = 1; a < n; ++a) {
		for (int b = a+dp[a-1]-1; b <= n; ++b) {
			if (b == n || mx(a, b) - mn(a, b) > k) {
				dp[a] = b-a;
				r += dp[a];
				break;
			}
		}
	}
	cout << r << '\n';
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
`100 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`5050` view save

user output
`5050` view save

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
`100 2 5 5 2 4 3 5 3 4 3 2 3 4 5 4 4 ...` view save

correct output
`317` view save

user output
`317` view save

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
`100 10 71 60 61 96 25 10 10 9 84 85 1...` view save

correct output
`119` view save

user output
`119` view save

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
`100 990000000 111122929 961821360 578238211 ...` view save

correct output
`4006` view save

user output
`4006` view save

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
`100 1000000000 553190572 453407680 667300705 ...` view save

correct output
`5050` view save

user output
`5050` view save

Test 6

Group: 2, 3

Verdict: ACCEPTED

input
`2000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`2001000` view save

user output
`2001000` view save

Test 7

Group: 2, 3

Verdict: ACCEPTED

input
`2000 2 4 4 1 4 2 3 1 2 1 3 5 2 2 4 4 ...` view save

correct output
`6340` view save

user output
`6340` view save

Test 8

Group: 2, 3

Verdict: ACCEPTED

input
`2000 10 65 88 33 88 41 10 17 38 22 3 8...` view save

correct output
`2413` view save

user output
`2413` view save

Test 9

Group: 2, 3

Verdict: ACCEPTED

input
`2000 999000000 746120950 772769620 721488968 ...` view save

correct output
`1287776` view save

user output
`1287776` view save

Test 10

Group: 2, 3

Verdict: ACCEPTED

input
`2000 1000000000 621947980 510355354 756705418 ...` view save

correct output
`2001000` view save

user output
`2001000` view save

Test 11

Group: 3

Verdict: RUNTIME ERROR

input
`100000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`5000050000` view save

user output
(empty)

Test 12

Group: 3

Verdict: RUNTIME ERROR

input
`100000 2 3 3 1 3 3 1 1 5 1 2 5 4 1 3 1 ...` view save

correct output
`317066` view save

user output
(empty)

Test 13

Group: 3

Verdict: RUNTIME ERROR

input
`100000 10 10 3 6 3 43 60 5 48 15 27 86 4...` view save

correct output
`123292` view save

user output
(empty)

Test 14

Group: 3

Verdict: RUNTIME ERROR

input
`100000 999990000 460235639 963048588 47270983 3...` view save

correct output
`4946886742` view save

user output
(empty)

Test 15

Group: 3

Verdict: RUNTIME ERROR

input
`100000 1000000000 885457070 18257718 927615960 3...` view save

correct output
`5000050000` view save

user output
(empty)

Test 16

Group: 3

Verdict: RUNTIME ERROR

input
`100000 50000 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

correct output
`3750075000` view save

user output
(empty)

Test 17

Group: 3

Verdict: RUNTIME ERROR

input
`100000 50000 100000 99999 99998 99997 99996...` view save

correct output
`3750075000` view save

user output
(empty)

Datatähti 2021 alku

Alitaulukot

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Test 17

Tasks

Submissions (jubidubi)