CSES - IZhO 2017, day 2

CSES - IZhO 2017, day 2 - Results

Submission details
Task:	Simple game
Sender:	Olli
Submission time:	2019-02-10 16:50:07 +0200
Language:	C++
Status:	READY
Result:	100

Feedback
group	verdict	score
#1	ACCEPTED	22
#2	ACCEPTED	27
#3	ACCEPTED	51

Test results
test	verdict	time	group
#1	ACCEPTED	0.02 s	1, 3	details
#2	ACCEPTED	0.03 s	1, 3	details
#3	ACCEPTED	0.03 s	1, 3	details
#4	ACCEPTED	0.02 s	1, 3	details
#5	ACCEPTED	0.03 s	1, 3	details
#6	ACCEPTED	0.03 s	1, 3	details
#7	ACCEPTED	0.02 s	1, 2, 3	details
#8	ACCEPTED	0.18 s	2, 3	details
#9	ACCEPTED	0.25 s	2, 3	details
#10	ACCEPTED	0.24 s	2, 3	details
#11	ACCEPTED	0.17 s	2, 3	details
#12	ACCEPTED	0.21 s	2, 3	details
#13	ACCEPTED	0.23 s	3	details
#14	ACCEPTED	0.23 s	3	details
#15	ACCEPTED	0.24 s	3	details
#16	ACCEPTED	0.24 s	3	details
#17	ACCEPTED	0.24 s	3	details
#18	ACCEPTED	0.23 s	2, 3	details

Code

#include <iostream>

using namespace std;

const int N = 1e5 + 5;
const int M = 1048576;

int t[2*M];
int h[N];

void update(int i) {
	i+=M;
	i/=2;
	while(i > 0) {
		t[i] = t[2*i] + t[2*i + 1];
		i /= 2;
	}
}

int sum(int a, int b) {
	a += M;
	b += M;
	int s = 0;
	while(a <= b) {
		if(a%2 == 1) {
			s += t[a];
			++a;
		}
		if(b%2 == 0) {
			s += t[b];
			--b;
		}
		a/=2; b/=2;
	}
	return s;
}

int main() {
	int n, m;
	cin >> n >> m;

	for(int i = 1; i <= n; ++i) {
		cin >> h[i];
	}

	for(int i = 1; i < n; ++i) {
		int a = min(h[i], h[i+1]);
		int b = max(h[i], h[i+1]);
		++t[a+M];
		--t[b+M];
	}

	for(int i = M-1; i >= 1; --i) {
		t[i] = t[2*i] + t[2*i + 1];
	}

	for(int q = 1; q <= m; ++q) {
		int type;
		cin >> type;
		if(type == 1) {
			int i, x;
			cin >> i >> x;
			for(int di = -1; di <= 1; di += 2) {
				int ni = i + di;
				if(ni <= 0 || ni > n) continue;
				int a = min(h[i], h[ni]);
				int b = max(h[i], h[ni]);
				--t[a+M];
				update(a);
				++t[b+M];
				update(b);
			}
			h[i] = x;
			for(int di = -1; di <= 1; di += 2) {
				int ni = i + di;
				if(ni <= 0 || ni > n) continue;
				int a = min(h[i], h[ni]);
				int b = max(h[i], h[ni]);
				++t[a+M];
				update(a);
				--t[b+M];
				update(b);
			}
		} else {
			int H;
			cin >> H;
			cout << sum(1, H) << "\n";
		}
	}

}

Test details

Test 1

Group: 1, 3

Verdict: ACCEPTED

input
`3 3 1 5 1 2 3 1 1 5 2 3` view save

correct output
`2 1` view save

user output
`2 1` view save

Test 2

Group: 1, 3

Verdict: ACCEPTED

input
`1000 1000 403944 539844 451514 488113 69...` view save

correct output
`444 462 34 516 288 ...` view save

user output
`444 462 34 516 288 ...` view save

Test 3

Group: 1, 3

Verdict: ACCEPTED

input
`1000 1000 487368 55984 456259 117591 818...` view save

correct output
`440 400 480 130 38 ...` view save

user output
`440 400 480 130 38 ...` view save

Test 4

Group: 1, 3

Verdict: ACCEPTED

input
`1000 1000 570792 604828 236813 971260 13...` view save

correct output
`386 460 50 470 126 ...` view save

user output
`386 460 50 470 126 ...` view save

Test 5

Group: 1, 3

Verdict: ACCEPTED

input
`1000 1000 686920 120969 241559 600738 48...` view save

correct output
`330 306 418 290 136 ...` view save

user output
`330 306 418 290 136 ...` view save

Test 6

Group: 1, 3

Verdict: ACCEPTED

input
`1000 1000 737640 478325 54816 262919 609...` view save

correct output
`230 418 148 338 4 ...` view save

user output
`230 418 148 338 4 ...` view save

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1000 1000 1 1000000 1 1000000 1 1000000 ...` view save

correct output
`999 999 999 999 999 ...` view save

user output
`999 999 999 999 999 ...` view save

Test 8

Group: 2, 3

Verdict: ACCEPTED

input
`100000 100000 18 15 8 5 7 19 19 11 11 8 6 15...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 9

Group: 2, 3

Verdict: ACCEPTED

input
`100000 100000 611680 625326 848926 304761 34...` view save

correct output
`30636 30745 50130 4464 9086 ...` view save

user output
`30636 30745 50130 4464 9086 ...` view save

Test 10

Group: 2, 3

Verdict: ACCEPTED

input
`100000 100000 695104 174171 853672 901534 35...` view save

correct output
`31870 39772 30788 11144 42732 ...` view save

user output
`31870 39772 30788 11144 42732 ...` view save

Test 11

Group: 2, 3

Verdict: ACCEPTED

input
`100000 100000 1 1 1 2 1 1 2 1 2 2 1 2 2 1 1 ...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 12

Group: 2, 3

Verdict: ACCEPTED

input
`100000 100000 2845 22894 4105 11830 29440 21...` view save

correct output
`45066 50090 24109 27778 294 ...` view save

user output
`45066 50090 24109 27778 294 ...` view save

Test 13

Group: 3

Verdict: ACCEPTED

input
`100000 100000 123269 247698 241557 639404 38...` view save

correct output
`37412 1520 46224 964 50058 ...` view save

user output
`37412 1520 46224 964 50058 ...` view save

Test 14

Group: 3

Verdict: ACCEPTED

input
`100000 100000 206693 572351 22110 493074 737...` view save

correct output
`33086 49042 43971 17756 41889 ...` view save

user output
`33086 49042 43971 17756 41889 ...` view save

Test 15

Group: 3

Verdict: ACCEPTED

input
`100000 100000 322821 121195 59560 155256 829...` view save

correct output
`28252 45031 28212 6208 31642 ...` view save

user output
`28252 45031 28212 6208 31642 ...` view save

Test 16

Group: 3

Verdict: ACCEPTED

input
`100000 100000 438949 637336 872818 784733 17...` view save

correct output
`45374 22320 9690 5630 40012 ...` view save

user output
`45374 22320 9690 5630 40012 ...` view save

Test 17

Group: 3

Verdict: ACCEPTED

input
`100000 100000 489669 186180 653371 446915 52...` view save

correct output
`43104 43128 41430 35554 996 ...` view save

user output
`43104 43128 41430 35554 996 ...` view save

Test 18

Group: 2, 3

Verdict: ACCEPTED

input
`100000 100000 1 1000000 1 1000000 1 1000000 ...` view save

correct output
`99999 99999 99999 99999 99999 ...` view save

user output
`99999 99999 99999 99999 99999 ...` view save

IZhO 2017, day 2

Simple game

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

Test 18

Tasks

Submissions (Olli)