CSES - Putka Open 2020 – 1/5 - Results
Submission details
Task:Vaihdot
Sender:ArktinenKarpalo
Submission time:2020-09-06 14:45:56 +0300
Language:C++ (C++11)
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#10.01 s1, 2, 3details
#20.01 s1, 2, 3details
#30.01 s1, 2, 3details
#40.01 s1, 2, 3details
#50.01 s1, 2, 3details
#60.01 s1, 2, 3details
#70.01 s1, 2, 3details
#80.01 s1, 2, 3details
#90.12 s2, 3details
#100.13 s2, 3details
#110.12 s2, 3details
#120.13 s2, 3details
#130.17 s2, 3details
#140.25 s2, 3details
#150.26 s2, 3details
#160.25 s2, 3details
#17--3details
#18--3details
#19--3details
#20--3details
#21--3details
#22--3details
#23--3details
#24--3details

Code

#include <bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define ld long double

using namespace std;

int n, a[202020], ar[202020], bs[202020];


int xyy(int a1, int b1) {
	int ret = 0;
	if(b1 <= ar[a1-1]) {
		ret++;

	}
	if(b1 > ar[a1+1]) {
		ret++;
	}
	return ret;
}

int xy(int a1, int b1) {
	return bs[a1]+bs[b1]-(xyy(a1, ar[b1]) + xyy(b1, ar[a1]));
}

int main() {
	cin.tie(0);
	cout.tie(0);
	ios_base::sync_with_stdio(0);
	cin >> n;
	srand(time(NULL));
	for(int i=1; i<=n; i++) {
		cin >> a[i];
		ar[a[i]] = i;
	}
	int rounds = 1;
	int last = -1;
	ar[0] = -1e9;
	ar[n+1] = 1e9;
	for(int i=1; i<=n; i++) {
		if(ar[i] < last)
			rounds++;
		last = ar[i];
		if(ar[i] <= ar[i-1]) {
			bs[i]++;
		}
		if(ar[i] > ar[i+1]) {
			bs[i]++;
		}
	}
	int best = -1;
	int ans = 0;
	for(int i=1; i<=n; i++) {
		for(int j=1; j<=n; j++) {
			if(i == j)
				continue;
			int chg = xy(i, j);
			if(chg > best) {
				best = chg;
			}
			if(chg == best)
				ans += chg;
		}
	}
	cout << rounds-best << " " << ans/2;
}

Test details

Test 1

Group: 1, 2, 3

Verdict:

input
100
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
2 99

user output
2 -99

Test 2

Group: 1, 2, 3

Verdict:

input
100
100 99 98 97 96 95 94 93 92 91...

correct output
98 4851

user output
98 9702

Test 3

Group: 1, 2, 3

Verdict:

input
100
1 2 88 4 5 6 7 8 9 10 11 12 13...

correct output
16 5

user output
16 -8

Test 4

Group: 1, 2, 3

Verdict:

input
100
51 48 74 70 45 71 24 88 55 99 ...

correct output
49 131

user output
49 278

Test 5

Group: 1, 2, 3

Verdict:

input
100
45 67 29 62 70 77 41 74 52 95 ...

correct output
52 268

user output
52 550

Test 6

Group: 1, 2, 3

Verdict:

input
100
47 98 2 75 6 21 84 8 4 89 27 9...

correct output
48 149

user output
48 300

Test 7

Group: 1, 2, 3

Verdict:

input
100
73 68 17 94 71 63 61 13 58 10 ...

correct output
47 116

user output
47 235

Test 8

Group: 1, 2, 3

Verdict:

input
100
17 16 45 94 6 1 36 81 31 13 51...

correct output
45 95

user output
45 201

Test 9

Group: 2, 3

Verdict:

input
5000
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
2 4999

user output
2 -4999

Test 10

Group: 2, 3

Verdict:

input
5000
5000 4999 4998 4997 4996 4995 ...

correct output
4998 12492501

user output
4998 24985002

Test 11

Group: 2, 3

Verdict:

input
5000
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
19 10

user output
19 -13273

Test 12

Group: 2, 3

Verdict:

input
5000
1 2 3 4 5 6 264 8 9 10 11 12 1...

correct output
190 96

user output
190 179

Test 13

Group: 2, 3

Verdict:

input
5000
1 2 3 4 5 6 7 8 9 2400 11 12 1...

correct output
1378 27938

user output
1378 55970

Test 14

Group: 2, 3

Verdict:

input
5000
4012 2 4820 4208 1868 1728 362...

correct output
2511 436307

user output
2511 873244

Test 15

Group: 2, 3

Verdict:

input
5000
3877 3972 1112 3669 1959 4640 ...

correct output
2497 417065

user output
2497 834718

Test 16

Group: 2, 3

Verdict:

input
5000
2774 998 4525 2884 487 1995 41...

correct output
2518 426448

user output
2518 853073

Test 17

Group: 3

Verdict:

input
200000
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
2 199999

user output
(empty)

Test 18

Group: 3

Verdict:

input
200000
200000 199999 199998 199997 19...

correct output
199998 19999700001

user output
(empty)

Test 19

Group: 3

Verdict:

input
200000
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
19 10

user output
(empty)

Test 20

Group: 3

Verdict:

input
200000
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
199 100

user output
(empty)

Test 21

Group: 3

Verdict:

input
200000
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
1979 1030

user output
(empty)

Test 22

Group: 3

Verdict:

input
200000
1 2 184153 4 5 6 7 8 164545 10...

correct output
18081 477187

user output
(empty)

Test 23

Group: 3

Verdict:

input
200000
151013 68675 119105 58292 3335...

correct output
86328 318722426

user output
(empty)

Test 24

Group: 3

Verdict:

input
200000
11562 33356 106752 170825 2723...

correct output
99873 663048119

user output
(empty)