Submission #51321

# Submission time Handle Problem Language Result Execution time Memory
51321 2018-06-17T13:15:42 Z ho94949 Rope (JOI17_rope) C++17
100 / 100
2495 ms 144580 KB
#include<bits/stdc++.h>
using namespace std;
const int MAXN = 1048576;
int idx[2*MAXN];
int getv(int a, int b)
{
	a += MAXN; b += MAXN;
	int ans = 0;
	while(a<=b)
	{
		if(a%2==1) ans = max(ans, idx[a++]);
		if(b%2==0) ans = max(ans, idx[b--]);
		a/=2; b/=2;
	}
	return ans;
}
void setv(int a, int v)
{
	idx[a+=MAXN] = v;
	while((a=a/2))
		idx[a] = max(idx[2*a], idx[2*a+1]);
}
void addv(int a, int v)
{
	idx[a+=MAXN] += v;
	while((a=a/2))
		idx[a] = max(idx[2*a], idx[2*a+1]);
}


int N, K;
vector<int> adj[MAXN];

int arr[MAXN];
int anseven[MAXN], ansodd[MAXN];
void even()
{
	for(int i=0; i<N/2; ++i)
	{
		int l = arr[2*i], r = arr[2*i+1];
		if(l == r)
			addv(l, 2);
		else
		{
			addv(l, 1); addv(r, 1);
			adj[l].push_back(r);
			adj[r].push_back(l);
		}
	}
	if(N%2==1) addv(arr[N-1], 1);
	for(int c=1; c<=K; ++c)
	{
		for(auto x: adj[c])
			addv(x, -1);
		
		anseven[c] = (getv(c, c) + max(getv(1, c-1), getv(c+1, K)));
		
		for(auto x: adj[c])
			addv(x, +1);
	}
}

void odd()
{
	addv(arr[0], 1);
	for(int i=0; i<(N-1)/2; ++i)
	{
		int l = arr[2*i+1], r = arr[2*i+2];
		if(l == r)
			addv(l, 2);
		else
		{
			addv(l, 1); addv(r, 1);
			adj[l].push_back(r);
			adj[r].push_back(l);
		}
	}
	if(N%2==0) addv(arr[N-1], 1);
	
	for(int c=1; c<=K; ++c)
	{
		for(auto x: adj[c])
			addv(x, -1);
		
		ansodd[c] = (getv(c, c) + max(getv(1, c-1), getv(c+1, K)));
		
		for(auto x: adj[c])
			addv(x, +1);
	}
	
}

int main()
{
	scanf("%d%d", &N, &K);
	for(int i=0; i<N; ++i) scanf("%d", arr+i);
	even();
	for(int i=1; i<=K; ++i) adj[i].clear();
	memset(idx, 0, sizeof idx);
	odd();
	for(int i=1; i<=K; ++i)
		printf("%d\n", N-max(anseven[i], ansodd[i]));
	return 0;
}

Compilation message

rope.cpp: In function 'int main()':
rope.cpp:95:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &N, &K);
  ~~~~~^~~~~~~~~~~~~~~~
rope.cpp:96:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=0; i<N; ++i) scanf("%d", arr+i);
                         ~~~~~^~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 30 ms 33148 KB Output is correct
2 Correct 31 ms 33328 KB Output is correct
3 Correct 28 ms 33364 KB Output is correct
4 Correct 39 ms 33440 KB Output is correct
5 Correct 28 ms 33440 KB Output is correct
6 Correct 27 ms 33440 KB Output is correct
7 Correct 28 ms 33480 KB Output is correct
8 Correct 27 ms 33480 KB Output is correct
9 Correct 27 ms 33480 KB Output is correct
10 Correct 27 ms 33480 KB Output is correct
11 Correct 28 ms 33480 KB Output is correct
12 Correct 28 ms 33480 KB Output is correct
13 Correct 29 ms 33480 KB Output is correct
14 Correct 31 ms 33480 KB Output is correct
15 Correct 28 ms 33480 KB Output is correct
16 Correct 28 ms 33480 KB Output is correct
17 Correct 28 ms 33480 KB Output is correct
18 Correct 29 ms 33480 KB Output is correct
19 Correct 29 ms 33480 KB Output is correct
20 Correct 28 ms 33480 KB Output is correct
21 Correct 29 ms 33480 KB Output is correct
22 Correct 28 ms 33480 KB Output is correct
23 Correct 29 ms 33480 KB Output is correct
24 Correct 28 ms 33480 KB Output is correct
25 Correct 27 ms 33480 KB Output is correct
26 Correct 27 ms 33480 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 30 ms 33148 KB Output is correct
2 Correct 31 ms 33328 KB Output is correct
3 Correct 28 ms 33364 KB Output is correct
4 Correct 39 ms 33440 KB Output is correct
5 Correct 28 ms 33440 KB Output is correct
6 Correct 27 ms 33440 KB Output is correct
7 Correct 28 ms 33480 KB Output is correct
8 Correct 27 ms 33480 KB Output is correct
9 Correct 27 ms 33480 KB Output is correct
10 Correct 27 ms 33480 KB Output is correct
11 Correct 28 ms 33480 KB Output is correct
12 Correct 28 ms 33480 KB Output is correct
13 Correct 29 ms 33480 KB Output is correct
14 Correct 31 ms 33480 KB Output is correct
15 Correct 28 ms 33480 KB Output is correct
16 Correct 28 ms 33480 KB Output is correct
17 Correct 28 ms 33480 KB Output is correct
18 Correct 29 ms 33480 KB Output is correct
19 Correct 29 ms 33480 KB Output is correct
20 Correct 28 ms 33480 KB Output is correct
21 Correct 29 ms 33480 KB Output is correct
22 Correct 28 ms 33480 KB Output is correct
23 Correct 29 ms 33480 KB Output is correct
24 Correct 28 ms 33480 KB Output is correct
25 Correct 27 ms 33480 KB Output is correct
26 Correct 27 ms 33480 KB Output is correct
27 Correct 82 ms 34480 KB Output is correct
28 Correct 75 ms 34480 KB Output is correct
29 Correct 79 ms 34480 KB Output is correct
30 Correct 80 ms 34480 KB Output is correct
31 Correct 83 ms 34480 KB Output is correct
32 Correct 75 ms 34480 KB Output is correct
33 Correct 93 ms 34480 KB Output is correct
34 Correct 83 ms 34480 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 30 ms 33148 KB Output is correct
2 Correct 31 ms 33328 KB Output is correct
3 Correct 28 ms 33364 KB Output is correct
4 Correct 39 ms 33440 KB Output is correct
5 Correct 28 ms 33440 KB Output is correct
6 Correct 27 ms 33440 KB Output is correct
7 Correct 28 ms 33480 KB Output is correct
8 Correct 27 ms 33480 KB Output is correct
9 Correct 27 ms 33480 KB Output is correct
10 Correct 27 ms 33480 KB Output is correct
11 Correct 28 ms 33480 KB Output is correct
12 Correct 28 ms 33480 KB Output is correct
13 Correct 29 ms 33480 KB Output is correct
14 Correct 31 ms 33480 KB Output is correct
15 Correct 28 ms 33480 KB Output is correct
16 Correct 28 ms 33480 KB Output is correct
17 Correct 28 ms 33480 KB Output is correct
18 Correct 29 ms 33480 KB Output is correct
19 Correct 29 ms 33480 KB Output is correct
20 Correct 28 ms 33480 KB Output is correct
21 Correct 29 ms 33480 KB Output is correct
22 Correct 28 ms 33480 KB Output is correct
23 Correct 29 ms 33480 KB Output is correct
24 Correct 28 ms 33480 KB Output is correct
25 Correct 27 ms 33480 KB Output is correct
26 Correct 27 ms 33480 KB Output is correct
27 Correct 82 ms 34480 KB Output is correct
28 Correct 75 ms 34480 KB Output is correct
29 Correct 79 ms 34480 KB Output is correct
30 Correct 80 ms 34480 KB Output is correct
31 Correct 83 ms 34480 KB Output is correct
32 Correct 75 ms 34480 KB Output is correct
33 Correct 93 ms 34480 KB Output is correct
34 Correct 83 ms 34480 KB Output is correct
35 Correct 77 ms 34480 KB Output is correct
36 Correct 75 ms 34480 KB Output is correct
37 Correct 87 ms 34480 KB Output is correct
38 Correct 80 ms 34480 KB Output is correct
39 Correct 80 ms 34480 KB Output is correct
40 Correct 76 ms 34552 KB Output is correct
41 Correct 75 ms 34552 KB Output is correct
42 Correct 76 ms 34552 KB Output is correct
43 Correct 115 ms 34552 KB Output is correct
44 Correct 114 ms 34552 KB Output is correct
45 Correct 95 ms 34672 KB Output is correct
46 Correct 74 ms 34672 KB Output is correct
47 Correct 81 ms 34696 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 30 ms 33148 KB Output is correct
2 Correct 31 ms 33328 KB Output is correct
3 Correct 28 ms 33364 KB Output is correct
4 Correct 39 ms 33440 KB Output is correct
5 Correct 28 ms 33440 KB Output is correct
6 Correct 27 ms 33440 KB Output is correct
7 Correct 28 ms 33480 KB Output is correct
8 Correct 27 ms 33480 KB Output is correct
9 Correct 27 ms 33480 KB Output is correct
10 Correct 27 ms 33480 KB Output is correct
11 Correct 28 ms 33480 KB Output is correct
12 Correct 28 ms 33480 KB Output is correct
13 Correct 29 ms 33480 KB Output is correct
14 Correct 31 ms 33480 KB Output is correct
15 Correct 28 ms 33480 KB Output is correct
16 Correct 28 ms 33480 KB Output is correct
17 Correct 28 ms 33480 KB Output is correct
18 Correct 29 ms 33480 KB Output is correct
19 Correct 29 ms 33480 KB Output is correct
20 Correct 28 ms 33480 KB Output is correct
21 Correct 29 ms 33480 KB Output is correct
22 Correct 28 ms 33480 KB Output is correct
23 Correct 29 ms 33480 KB Output is correct
24 Correct 28 ms 33480 KB Output is correct
25 Correct 27 ms 33480 KB Output is correct
26 Correct 27 ms 33480 KB Output is correct
27 Correct 82 ms 34480 KB Output is correct
28 Correct 75 ms 34480 KB Output is correct
29 Correct 79 ms 34480 KB Output is correct
30 Correct 80 ms 34480 KB Output is correct
31 Correct 83 ms 34480 KB Output is correct
32 Correct 75 ms 34480 KB Output is correct
33 Correct 93 ms 34480 KB Output is correct
34 Correct 83 ms 34480 KB Output is correct
35 Correct 77 ms 34480 KB Output is correct
36 Correct 75 ms 34480 KB Output is correct
37 Correct 87 ms 34480 KB Output is correct
38 Correct 80 ms 34480 KB Output is correct
39 Correct 80 ms 34480 KB Output is correct
40 Correct 76 ms 34552 KB Output is correct
41 Correct 75 ms 34552 KB Output is correct
42 Correct 76 ms 34552 KB Output is correct
43 Correct 115 ms 34552 KB Output is correct
44 Correct 114 ms 34552 KB Output is correct
45 Correct 95 ms 34672 KB Output is correct
46 Correct 74 ms 34672 KB Output is correct
47 Correct 81 ms 34696 KB Output is correct
48 Correct 655 ms 44020 KB Output is correct
49 Correct 585 ms 48636 KB Output is correct
50 Correct 544 ms 53208 KB Output is correct
51 Correct 575 ms 57476 KB Output is correct
52 Correct 550 ms 60120 KB Output is correct
53 Correct 526 ms 64884 KB Output is correct
54 Correct 504 ms 68460 KB Output is correct
55 Correct 510 ms 72724 KB Output is correct
56 Correct 550 ms 76992 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 30 ms 33148 KB Output is correct
2 Correct 31 ms 33328 KB Output is correct
3 Correct 28 ms 33364 KB Output is correct
4 Correct 39 ms 33440 KB Output is correct
5 Correct 28 ms 33440 KB Output is correct
6 Correct 27 ms 33440 KB Output is correct
7 Correct 28 ms 33480 KB Output is correct
8 Correct 27 ms 33480 KB Output is correct
9 Correct 27 ms 33480 KB Output is correct
10 Correct 27 ms 33480 KB Output is correct
11 Correct 28 ms 33480 KB Output is correct
12 Correct 28 ms 33480 KB Output is correct
13 Correct 29 ms 33480 KB Output is correct
14 Correct 31 ms 33480 KB Output is correct
15 Correct 28 ms 33480 KB Output is correct
16 Correct 28 ms 33480 KB Output is correct
17 Correct 28 ms 33480 KB Output is correct
18 Correct 29 ms 33480 KB Output is correct
19 Correct 29 ms 33480 KB Output is correct
20 Correct 28 ms 33480 KB Output is correct
21 Correct 29 ms 33480 KB Output is correct
22 Correct 28 ms 33480 KB Output is correct
23 Correct 29 ms 33480 KB Output is correct
24 Correct 28 ms 33480 KB Output is correct
25 Correct 27 ms 33480 KB Output is correct
26 Correct 27 ms 33480 KB Output is correct
27 Correct 82 ms 34480 KB Output is correct
28 Correct 75 ms 34480 KB Output is correct
29 Correct 79 ms 34480 KB Output is correct
30 Correct 80 ms 34480 KB Output is correct
31 Correct 83 ms 34480 KB Output is correct
32 Correct 75 ms 34480 KB Output is correct
33 Correct 93 ms 34480 KB Output is correct
34 Correct 83 ms 34480 KB Output is correct
35 Correct 77 ms 34480 KB Output is correct
36 Correct 75 ms 34480 KB Output is correct
37 Correct 87 ms 34480 KB Output is correct
38 Correct 80 ms 34480 KB Output is correct
39 Correct 80 ms 34480 KB Output is correct
40 Correct 76 ms 34552 KB Output is correct
41 Correct 75 ms 34552 KB Output is correct
42 Correct 76 ms 34552 KB Output is correct
43 Correct 115 ms 34552 KB Output is correct
44 Correct 114 ms 34552 KB Output is correct
45 Correct 95 ms 34672 KB Output is correct
46 Correct 74 ms 34672 KB Output is correct
47 Correct 81 ms 34696 KB Output is correct
48 Correct 655 ms 44020 KB Output is correct
49 Correct 585 ms 48636 KB Output is correct
50 Correct 544 ms 53208 KB Output is correct
51 Correct 575 ms 57476 KB Output is correct
52 Correct 550 ms 60120 KB Output is correct
53 Correct 526 ms 64884 KB Output is correct
54 Correct 504 ms 68460 KB Output is correct
55 Correct 510 ms 72724 KB Output is correct
56 Correct 550 ms 76992 KB Output is correct
57 Correct 2495 ms 125388 KB Output is correct
58 Correct 1998 ms 125388 KB Output is correct
59 Correct 2096 ms 125388 KB Output is correct
60 Correct 2155 ms 131536 KB Output is correct
61 Correct 2131 ms 138284 KB Output is correct
62 Correct 1059 ms 138284 KB Output is correct
63 Correct 1296 ms 141028 KB Output is correct
64 Correct 1158 ms 144580 KB Output is correct
65 Correct 833 ms 144580 KB Output is correct