oj.uz

Submission #984127

# Submission time Handle Problem Language Result Execution time Memory
984127 2024-05-16T10:25:45 Z CSQ31 Ancient Books (IOI17_books) C++17
100 / 100
 169 ms 52820 KB 
#include "books.h"
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define sz(a) (int)(a.size())
#define all(a) a.begin(),a.end()
typedef long long int ll;
typedef pair<int,int> pii;
const int MAXN = 1e6+1;
int mn[MAXN],mx[MAXN];
ll ans = 0;
int n = 0;
vector<int>p;
void extend(int &l,int &r){
	int l0 = min(mn[l],mn[r]);
	int r0 = max(mx[l],mx[r]);
	while(l0 < l || r < r0){
		while(l0 < l){
			l--;
			l0 = min(l0,mn[l]);
			r0 = max(r0,mx[l]);
		}
		while(r0 > r){
			r++;
			l0 = min(l0,mn[r]);
			r0 = max(r0,mx[r]);
		}
	}
}
void solve(int l,int r){
	extend(l,r);
	//cout<<l<<" "<<r<<'\n';
	int rcost = 0;
	int lcost = 0;

	int l0 = l,r0 = r;
	int L = l,R = r;
	r++;
	while(r < n){
		rcost += 2;
		extend(l,r);
		if(l < l0)break;
		r++;
	}
	L = l;
	R = r;
	l = l0,r = r0;

	l--;
	while(l >= 0){
		lcost+=2;
		extend(l,r);
		if(r > r0)break;
		l--;
	}
	L = min(L,l);
	R = max(R,r);
	//cout<<L<<" "<<R<<" "<<lcost<<" "<<rcost<<'\n';
	if(R == n){ //end of the line
	    ans += rcost;
		ans += lcost;
		return;
	}

	ans += min(lcost,rcost);
	solve(L,R);
}
ll minimum_walk(vector<int>P, int s) {
	p = P;
	n = sz(p);
	for(int i=0;i<n;i++)ans+=abs(i-p[i]);
	vector<bool>vis(n,0);
	for(int i=0;i<n;i++){
		if(vis[i])continue;
		int cur = i;
		mn[i] = mx[i] = i;
		vector<int>path;
		while(!vis[cur]){
			vis[cur] = 1;
			path.push_back(cur);
			cur = p[cur];
		}
		for(int x:path){
			mn[i] = min(mn[i],x);
			mx[i] = max(mx[i],x);
		}
		for(int x:path){
			mn[x] = mn[i];
			mx[x] = mx[i];
		}
	}
	// for(int i=0;i<n;i++)cout<<mn[i]<<" ";
	// cout<<'\n';
	// for(int i=0;i<n;i++)cout<<mx[i]<<" ";
	// cout<<'\n';
	solve(s,s);
	for(int i=0;i<s;i++){
		if(i==p[i])ans-=2;
		else break;
	}
	for(int i=n-1;i>s;i--){
		if(i==p[i])ans-=2;
		else break;
	}
	return ans;	
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2392 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2392 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2392 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2392 KB Output is correct
30 Correct 169 ms 30272 KB Output is correct
31 Correct 116 ms 28676 KB Output is correct
32 Correct 116 ms 26704 KB Output is correct
33 Correct 107 ms 26596 KB Output is correct
34 Correct 110 ms 26964 KB Output is correct
35 Correct 106 ms 26704 KB Output is correct
36 Correct 133 ms 26704 KB Output is correct
37 Correct 92 ms 27112 KB Output is correct
38 Correct 99 ms 26892 KB Output is correct
39 Correct 86 ms 26704 KB Output is correct
40 Correct 88 ms 27032 KB Output is correct
41 Correct 105 ms 28208 KB Output is correct
42 Correct 95 ms 27692 KB Output is correct
43 Correct 101 ms 26780 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2392 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2392 KB Output is correct
30 Correct 169 ms 30272 KB Output is correct
31 Correct 116 ms 28676 KB Output is correct
32 Correct 116 ms 26704 KB Output is correct
33 Correct 107 ms 26596 KB Output is correct
34 Correct 110 ms 26964 KB Output is correct
35 Correct 106 ms 26704 KB Output is correct
36 Correct 133 ms 26704 KB Output is correct
37 Correct 92 ms 27112 KB Output is correct
38 Correct 99 ms 26892 KB Output is correct
39 Correct 86 ms 26704 KB Output is correct
40 Correct 88 ms 27032 KB Output is correct
41 Correct 105 ms 28208 KB Output is correct
42 Correct 95 ms 27692 KB Output is correct
43 Correct 101 ms 26780 KB Output is correct
44 Correct 1 ms 2396 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct
46 Correct 1 ms 2396 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 1 ms 2396 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 1 ms 2396 KB Output is correct
52 Correct 1 ms 2396 KB Output is correct
53 Correct 1 ms 2396 KB Output is correct
54 Correct 1 ms 2396 KB Output is correct
55 Correct 1 ms 2396 KB Output is correct
56 Correct 1 ms 2396 KB Output is correct
57 Correct 1 ms 2396 KB Output is correct
58 Correct 1 ms 2396 KB Output is correct
59 Correct 1 ms 2396 KB Output is correct
60 Correct 1 ms 2396 KB Output is correct
61 Correct 1 ms 2396 KB Output is correct
62 Correct 1 ms 2396 KB Output is correct
63 Correct 1 ms 2396 KB Output is correct
64 Correct 103 ms 26712 KB Output is correct
65 Correct 139 ms 26616 KB Output is correct
66 Correct 91 ms 26868 KB Output is correct
67 Correct 85 ms 26704 KB Output is correct
68 Correct 10 ms 8540 KB Output is correct
69 Correct 10 ms 8540 KB Output is correct
70 Correct 10 ms 8384 KB Output is correct
71 Correct 17 ms 8540 KB Output is correct
72 Correct 17 ms 8536 KB Output is correct
73 Correct 9 ms 8540 KB Output is correct
74 Correct 103 ms 26612 KB Output is correct
75 Correct 104 ms 26704 KB Output is correct
76 Correct 104 ms 26872 KB Output is correct
77 Correct 100 ms 26932 KB Output is correct
78 Correct 109 ms 26616 KB Output is correct
79 Correct 111 ms 26632 KB Output is correct
80 Correct 104 ms 26652 KB Output is correct
81 Correct 118 ms 52720 KB Output is correct
82 Correct 141 ms 52820 KB Output is correct
83 Correct 104 ms 29168 KB Output is correct
84 Correct 103 ms 28408 KB Output is correct
85 Correct 95 ms 27376 KB Output is correct
86 Correct 92 ms 27008 KB Output is correct
87 Correct 129 ms 38768 KB Output is correct
88 Correct 150 ms 33780 KB Output is correct
89 Correct 129 ms 29812 KB Output is correct
90 Correct 87 ms 26876 KB Output is correct
91 Correct 112 ms 26708 KB Output is correct
92 Correct 89 ms 26960 KB Output is correct