oj.uz

Submission #581992

# Submission time Handle Problem Language Result Execution time Memory
581992 2022-06-23T09:18:39 Z alireza_kaviani Ancient Books (IOI17_books) C++17
100 / 100
 447 ms 52656 KB 
#include <bits/stdc++.h>
#include "books.h"
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

#define sep			' '
#define X			first
#define Y			second
#define all(x)		(x).begin() , (x).end()
#define SZ(x)		int(x.size())

const int MAXN = 1e6 + 10;

ll n , s , sum , P[MAXN] , mark[MAXN] , L[MAXN] , R[MAXN] , ps[MAXN];

ll minimum_walk(vector<int> p, int S) {
	n = SZ(p); s = S;
	for(int i = 0 ; i < n ; i++){
		P[i] = p[i];
		sum += abs(P[i] - i);
	}
	int l = 0 , r = n - 1;
	while(r > l && r > s && P[r] == r)	r--;
	while(l <= r && l < s && P[l] == l)	l++;
	if(l == r && P[l] == P[r]){
		return 0;
	}
	for(int i = l ; i <= r ; i++){
		L[i] = R[i] = i;
	}
	for(int i = l ; i <= r ; i++){
		if(!mark[i]){
			vector<int> V;
			int x = i;
			while(!mark[x]){
				mark[x] = 1;
				V.push_back(x);
				x = P[x];
			}
			sort(all(V));
			for(int j = 0 ; j + 1 < SZ(V) ; j++){
				int v = V[j] , u = V[j + 1];
				R[v] = u; L[u] = v;
				ps[v]++; ps[u]--;
			}
		}
	}
	partial_sum(ps , ps + MAXN , ps);
	vector<int> comps;
	for(int i = l ; i <= r ; i++){
		if(ps[i] == 0){
			comps.push_back(i);
		}
	}

	int t = *lower_bound(all(comps) , s);
	int curl = s , curr = s;
	int mnl = L[s] , mxr = R[s];
	ll ans = sum + SZ(comps) * 2 - 2;
	while(1){
		while(mnl != curl || mxr != curr){
			if(mnl != curl){
				curl--;
				mnl = min((ll)mnl , L[curl]);
				mxr = max((ll)mxr , R[curl]);
			}
			else{
				curr++;
				mnl = min((ll)mnl , L[curr]);
				mxr = max((ll)mxr , R[curr]);
			}
		}
		if(curr >= t){
			break;
		}
		ans += 2;
		curl--;
		mnl = min((ll)mnl , L[curl]);
		mxr = max((ll)mxr , R[curl]);
		curr++;
		mnl = min((ll)mnl , L[curr]);
		mxr = max((ll)mxr , R[curr]);
	}

	return ans;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 8148 KB Output is correct
2 Correct 7 ms 8116 KB Output is correct
3 Correct 6 ms 8148 KB Output is correct
4 Correct 6 ms 8112 KB Output is correct
5 Correct 6 ms 8148 KB Output is correct
6 Correct 5 ms 8148 KB Output is correct
7 Correct 5 ms 8148 KB Output is correct
8 Correct 11 ms 8148 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 7 ms 8148 KB Output is correct
11 Correct 1 ms 312 KB Output is correct
12 Correct 6 ms 8148 KB Output is correct
13 Correct 6 ms 8148 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 7 ms 8060 KB Output is correct
16 Correct 6 ms 8112 KB Output is correct
17 Correct 7 ms 8148 KB Output is correct
18 Correct 7 ms 8112 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 8148 KB Output is correct
2 Correct 7 ms 8116 KB Output is correct
3 Correct 6 ms 8148 KB Output is correct
4 Correct 6 ms 8112 KB Output is correct
5 Correct 6 ms 8148 KB Output is correct
6 Correct 5 ms 8148 KB Output is correct
7 Correct 5 ms 8148 KB Output is correct
8 Correct 11 ms 8148 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 7 ms 8148 KB Output is correct
11 Correct 1 ms 312 KB Output is correct
12 Correct 6 ms 8148 KB Output is correct
13 Correct 6 ms 8148 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 7 ms 8060 KB Output is correct
16 Correct 6 ms 8112 KB Output is correct
17 Correct 7 ms 8148 KB Output is correct
18 Correct 7 ms 8112 KB Output is correct
19 Correct 7 ms 8200 KB Output is correct
20 Correct 7 ms 8148 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 16 ms 8112 KB Output is correct
23 Correct 13 ms 8148 KB Output is correct
24 Correct 7 ms 8196 KB Output is correct
25 Correct 7 ms 8112 KB Output is correct
26 Correct 7 ms 8116 KB Output is correct
27 Correct 8 ms 8116 KB Output is correct
28 Correct 8 ms 8176 KB Output is correct
29 Correct 8 ms 8192 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 8148 KB Output is correct
2 Correct 7 ms 8116 KB Output is correct
3 Correct 6 ms 8148 KB Output is correct
4 Correct 6 ms 8112 KB Output is correct
5 Correct 6 ms 8148 KB Output is correct
6 Correct 5 ms 8148 KB Output is correct
7 Correct 5 ms 8148 KB Output is correct
8 Correct 11 ms 8148 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 7 ms 8148 KB Output is correct
11 Correct 1 ms 312 KB Output is correct
12 Correct 6 ms 8148 KB Output is correct
13 Correct 6 ms 8148 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 7 ms 8060 KB Output is correct
16 Correct 6 ms 8112 KB Output is correct
17 Correct 7 ms 8148 KB Output is correct
18 Correct 7 ms 8112 KB Output is correct
19 Correct 7 ms 8200 KB Output is correct
20 Correct 7 ms 8148 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 16 ms 8112 KB Output is correct
23 Correct 13 ms 8148 KB Output is correct
24 Correct 7 ms 8196 KB Output is correct
25 Correct 7 ms 8112 KB Output is correct
26 Correct 7 ms 8116 KB Output is correct
27 Correct 8 ms 8116 KB Output is correct
28 Correct 8 ms 8176 KB Output is correct
29 Correct 8 ms 8192 KB Output is correct
30 Correct 411 ms 51560 KB Output is correct
31 Correct 447 ms 50468 KB Output is correct
32 Correct 178 ms 17000 KB Output is correct
33 Correct 267 ms 52492 KB Output is correct
34 Correct 229 ms 52656 KB Output is correct
35 Correct 207 ms 50528 KB Output is correct
36 Correct 265 ms 49432 KB Output is correct
37 Correct 263 ms 48348 KB Output is correct
38 Correct 284 ms 48364 KB Output is correct
39 Correct 277 ms 48384 KB Output is correct
40 Correct 286 ms 48572 KB Output is correct
41 Correct 338 ms 49208 KB Output is correct
42 Correct 348 ms 49284 KB Output is correct
43 Correct 217 ms 48304 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 8132 KB Output is correct
2 Correct 8 ms 8196 KB Output is correct
3 Correct 8 ms 8148 KB Output is correct
4 Correct 7 ms 8116 KB Output is correct
5 Correct 6 ms 8160 KB Output is correct
6 Correct 8 ms 8148 KB Output is correct
7 Correct 8 ms 8148 KB Output is correct
8 Correct 8 ms 8164 KB Output is correct
9 Correct 6 ms 8148 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 6 ms 8196 KB Output is correct
12 Correct 6 ms 8116 KB Output is correct
13 Correct 6 ms 8148 KB Output is correct
14 Correct 6 ms 8180 KB Output is correct
15 Correct 7 ms 8148 KB Output is correct
16 Correct 6 ms 8160 KB Output is correct
17 Correct 6 ms 8116 KB Output is correct
18 Correct 8 ms 8172 KB Output is correct
19 Correct 10 ms 8152 KB Output is correct
20 Correct 7 ms 8188 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 8148 KB Output is correct
2 Correct 7 ms 8116 KB Output is correct
3 Correct 6 ms 8148 KB Output is correct
4 Correct 6 ms 8112 KB Output is correct
5 Correct 6 ms 8148 KB Output is correct
6 Correct 5 ms 8148 KB Output is correct
7 Correct 5 ms 8148 KB Output is correct
8 Correct 11 ms 8148 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 7 ms 8148 KB Output is correct
11 Correct 1 ms 312 KB Output is correct
12 Correct 6 ms 8148 KB Output is correct
13 Correct 6 ms 8148 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 7 ms 8060 KB Output is correct
16 Correct 6 ms 8112 KB Output is correct
17 Correct 7 ms 8148 KB Output is correct
18 Correct 7 ms 8112 KB Output is correct
19 Correct 7 ms 8200 KB Output is correct
20 Correct 7 ms 8148 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 16 ms 8112 KB Output is correct
23 Correct 13 ms 8148 KB Output is correct
24 Correct 7 ms 8196 KB Output is correct
25 Correct 7 ms 8112 KB Output is correct
26 Correct 7 ms 8116 KB Output is correct
27 Correct 8 ms 8116 KB Output is correct
28 Correct 8 ms 8176 KB Output is correct
29 Correct 8 ms 8192 KB Output is correct
30 Correct 411 ms 51560 KB Output is correct
31 Correct 447 ms 50468 KB Output is correct
32 Correct 178 ms 17000 KB Output is correct
33 Correct 267 ms 52492 KB Output is correct
34 Correct 229 ms 52656 KB Output is correct
35 Correct 207 ms 50528 KB Output is correct
36 Correct 265 ms 49432 KB Output is correct
37 Correct 263 ms 48348 KB Output is correct
38 Correct 284 ms 48364 KB Output is correct
39 Correct 277 ms 48384 KB Output is correct
40 Correct 286 ms 48572 KB Output is correct
41 Correct 338 ms 49208 KB Output is correct
42 Correct 348 ms 49284 KB Output is correct
43 Correct 217 ms 48304 KB Output is correct
44 Correct 10 ms 8132 KB Output is correct
45 Correct 8 ms 8196 KB Output is correct
46 Correct 8 ms 8148 KB Output is correct
47 Correct 7 ms 8116 KB Output is correct
48 Correct 6 ms 8160 KB Output is correct
49 Correct 8 ms 8148 KB Output is correct
50 Correct 8 ms 8148 KB Output is correct
51 Correct 8 ms 8164 KB Output is correct
52 Correct 6 ms 8148 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Correct 6 ms 8196 KB Output is correct
55 Correct 6 ms 8116 KB Output is correct
56 Correct 6 ms 8148 KB Output is correct
57 Correct 6 ms 8180 KB Output is correct
58 Correct 7 ms 8148 KB Output is correct
59 Correct 6 ms 8160 KB Output is correct
60 Correct 6 ms 8116 KB Output is correct
61 Correct 8 ms 8172 KB Output is correct
62 Correct 10 ms 8152 KB Output is correct
63 Correct 7 ms 8188 KB Output is correct
64 Correct 218 ms 48448 KB Output is correct
65 Correct 227 ms 47904 KB Output is correct
66 Correct 204 ms 47928 KB Output is correct
67 Correct 196 ms 47952 KB Output is correct
68 Correct 23 ms 12584 KB Output is correct
69 Correct 28 ms 12536 KB Output is correct
70 Correct 25 ms 12540 KB Output is correct
71 Correct 35 ms 12596 KB Output is correct
72 Correct 40 ms 12524 KB Output is correct
73 Correct 28 ms 12736 KB Output is correct
74 Correct 226 ms 52160 KB Output is correct
75 Correct 227 ms 52212 KB Output is correct
76 Correct 203 ms 47928 KB Output is correct
77 Correct 229 ms 47932 KB Output is correct
78 Correct 273 ms 47844 KB Output is correct
79 Correct 254 ms 48004 KB Output is correct
80 Correct 130 ms 16560 KB Output is correct
81 Correct 210 ms 47856 KB Output is correct
82 Correct 237 ms 47848 KB Output is correct
83 Correct 205 ms 47820 KB Output is correct
84 Correct 226 ms 47816 KB Output is correct
85 Correct 245 ms 47748 KB Output is correct
86 Correct 243 ms 47816 KB Output is correct
87 Correct 242 ms 47708 KB Output is correct
88 Correct 198 ms 47704 KB Output is correct
89 Correct 267 ms 47632 KB Output is correct
90 Correct 245 ms 47640 KB Output is correct
91 Correct 265 ms 47748 KB Output is correct
92 Correct 259 ms 47688 KB Output is correct