CSES - Putka Open 2020 – 1/5 - Results
Submission details
Task:Vaihdot
Sender:Metabolix
Submission time:2020-09-04 23:50:05 +0300
Language:C++ (C++11)
Status:READY
Result:36
Feedback
groupverdictscore
#1ACCEPTED13
#2ACCEPTED23
#30
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2, 3details
#2ACCEPTED0.01 s1, 2, 3details
#3ACCEPTED0.01 s1, 2, 3details
#4ACCEPTED0.01 s1, 2, 3details
#5ACCEPTED0.01 s1, 2, 3details
#6ACCEPTED0.01 s1, 2, 3details
#7ACCEPTED0.01 s1, 2, 3details
#8ACCEPTED0.01 s1, 2, 3details
#9ACCEPTED0.10 s2, 3details
#10ACCEPTED0.12 s2, 3details
#11ACCEPTED0.10 s2, 3details
#12ACCEPTED0.11 s2, 3details
#13ACCEPTED0.17 s2, 3details
#14ACCEPTED0.24 s2, 3details
#15ACCEPTED0.24 s2, 3details
#16ACCEPTED0.24 s2, 3details
#17--3details
#18--3details
#19--3details
#20--3details
#21--3details
#22--3details
#23--3details
#24--3details

Code

#include <iostream>

#define MAX 200000
int n, L[MAX+4], Li[MAX+4];

int matka(int a, int b) {
	int laskuri = 1;
	for (int i = a; i < b; ++i) {
		if (Li[i+1] < Li[i]) {
			laskuri += 1;
		}
	}
	return laskuri;
}

int matka_4(int a, int b, int c, int d) {
	if (a < b && b < c && c < d) return 1;
	if ((a < b && b < c) || (b < c && c < d) || (a < b && c < d)) return 2;
	if (a < b || b < c || c < d) return 3;
	return 4;
}

int matka_3(int a, int b, int c) {
	if (a < b && b < c) return 1;
	if (a < b || b < c) return 2;
	return 3;
}

int main() {
	std::cin >> n;
	L[0] = Li[0] = 0;
	L[n+1] = Li[n+1] = n+1;
	L[n+2] = Li[n+2] = n+2;
	for (int i = 1; i <= n; ++i) {
		std::cin >> L[i];
		Li[L[i]] = i;
	}
	int kierroksia = matka(1, n);
	int tulos[10] = {0};
	for (int i = 1; i < n; ++i) {
		// Jos vaihdetaan luvut i <-> i + 1
		int m0 = matka_4(Li[i - 1], Li[i], Li[i + 1], Li[i + 2]);
		int m1 = matka_4(Li[i - 1], Li[i + 1], Li[i], Li[i + 2]);
		tulos[5 + (m1 - m0)] += 1;
		// Jos vaihdetaan luvut i ja j
		for (int j = i+2; j <= n; ++j) {
			int ma0 = matka_3(Li[i-1], Li[i], Li[i+1]);
			int ma1 = matka_3(Li[i-1], Li[j], Li[i+1]);
			int mb0 = matka_3(Li[j-1], Li[j], Li[j+1]);
			int mb1 = matka_3(Li[j-1], Li[i], Li[j+1]);
			tulos[5 + (ma1 + mb1 - ma0 - mb0)] += 1;
		}
	}
	for (int i = 0; i < 10; ++i) if (tulos[i]) {
		printf("%d %d\n", kierroksia - 5 + i, tulos[i]);
		break;
	}
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

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: ACCEPTED

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

correct output
98 4851

user output
98 4851

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

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

correct output
16 5

user output
16 5

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

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

correct output
49 131

user output
49 131

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

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

correct output
52 268

user output
52 268

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

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

correct output
48 149

user output
48 149

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

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

correct output
47 116

user output
47 116

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

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

correct output
45 95

user output
45 95

Test 9

Group: 2, 3

Verdict: ACCEPTED

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: ACCEPTED

input
5000
5000 4999 4998 4997 4996 4995 ...

correct output
4998 12492501

user output
4998 12492501

Test 11

Group: 2, 3

Verdict: ACCEPTED

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

correct output
19 10

user output
19 10

Test 12

Group: 2, 3

Verdict: ACCEPTED

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

correct output
190 96

user output
190 96

Test 13

Group: 2, 3

Verdict: ACCEPTED

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

correct output
1378 27938

user output
1378 27938

Test 14

Group: 2, 3

Verdict: ACCEPTED

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

correct output
2511 436307

user output
2511 436307

Test 15

Group: 2, 3

Verdict: ACCEPTED

input
5000
3877 3972 1112 3669 1959 4640 ...

correct output
2497 417065

user output
2497 417065

Test 16

Group: 2, 3

Verdict: ACCEPTED

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

correct output
2518 426448

user output
2518 426448

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)