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Submission #758028

# Submission time Handle Problem Language Result Execution time Memory
758028 2023-06-14T05:06:38 Z alexander707070 Ancient Books (IOI17_books) C++14
50 / 100
 919 ms 24820 KB 
#include<bits/stdc++.h>
#define MAXN 1000007
using namespace std;
 
int n,perm[MAXN],br,cnt,last,maxpos,to[MAXN],curr,pos,first;
bool li[MAXN],ok,used[MAXN];
long long sum,add[MAXN],ans;

bool tree[4*MAXN];

void update(int v,int l,int r,int ll,int rr){
	if(ll>rr)return;
	if(l==ll and r==rr){
		tree[v]=true;
	}else{
		int tt=(l+r)/2;
		update(2*v,l,tt,ll,min(tt,rr));
		update(2*v+1,tt+1,r,max(tt+1,ll),rr);
	}
}

bool getpos(int v,int l,int r,int pos){
	if(l==r)return tree[v];
	int tt=(l+r)/2;
	if(pos<=tt)return getpos(2*v,l,tt,pos) or tree[v];
	else return getpos(2*v+1,tt+1,r,pos)  or tree[v];
}
 
void dfs(int x){
	li[x]=true; 
	sum+=abs(x-perm[x]); br++;

	update(1,0,n-1,min(x,perm[x]),max(x,perm[x])-1);

	if(!li[perm[x]])dfs(perm[x]);
}

void dfs2(int x){
	li[x]=true; 
	sum+=abs(x-perm[x]); br++;

	update(1,0,n-1,min(x,perm[x])+1,max(x,perm[x]));

	if(!li[perm[x]])dfs2(perm[x]);
}
 
long long minimum_walk(vector<int> p, int s){
	n=int(p.size());
 
	for(int i=0;i<n;i++)perm[i]=p[i];
 
	for(int i=0;i<n;i++){
		if(!li[i]){
			sum=br=0; 
			dfs(i); add[i]=sum;
			if(br>1)last=i;
		}
	}

	for(int i=s;i<=last;i++){
		ans+=add[i];
		if(!getpos(1,0,n-1,i) and i<last)ans+=2;
	}

	for(int i=0;i<4*n;i++)tree[i]=false;
	for(int i=0;i<n;i++)li[i]=false;

	for(int i=n-1;i>=0;i--){
		if(!li[i]){
			sum=br=0; 
			dfs2(i); add[i]=sum;
			if(br>1)first=i;
		}
	}

	for(int i=s-1;i>=first;i--){
		ans+=add[i];
		if(!getpos(1,0,n-1,i) and i<last)ans+=2;
	}

	return ans;
}
 
/*
int main(){
	cout<<minimum_walk({0,2,3,1}, 0)<<"\n";
}
*/

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 919 ms 16884 KB Output is correct
31 Correct 896 ms 16880 KB Output is correct
32 Correct 103 ms 24820 KB Output is correct
33 Correct 320 ms 24728 KB Output is correct
34 Correct 306 ms 24712 KB Output is correct
35 Correct 369 ms 24780 KB Output is correct
36 Correct 433 ms 24772 KB Output is correct
37 Correct 521 ms 24748 KB Output is correct
38 Correct 609 ms 22988 KB Output is correct
39 Correct 590 ms 22468 KB Output is correct
40 Correct 709 ms 18752 KB Output is correct
41 Correct 898 ms 17128 KB Output is correct
42 Correct 740 ms 17464 KB Output is correct
43 Correct 343 ms 24684 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB 3rd lines differ - on the 1st token, expected: '3304', found: '1046'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 919 ms 16884 KB Output is correct
31 Correct 896 ms 16880 KB Output is correct
32 Correct 103 ms 24820 KB Output is correct
33 Correct 320 ms 24728 KB Output is correct
34 Correct 306 ms 24712 KB Output is correct
35 Correct 369 ms 24780 KB Output is correct
36 Correct 433 ms 24772 KB Output is correct
37 Correct 521 ms 24748 KB Output is correct
38 Correct 609 ms 22988 KB Output is correct
39 Correct 590 ms 22468 KB Output is correct
40 Correct 709 ms 18752 KB Output is correct
41 Correct 898 ms 17128 KB Output is correct
42 Correct 740 ms 17464 KB Output is correct
43 Correct 343 ms 24684 KB Output is correct
44 Incorrect 1 ms 340 KB 3rd lines differ - on the 1st token, expected: '3304', found: '1046'
45 Halted 0 ms 0 KB -