Submission #392854

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
392854	2021-04-22T00:51:22 Z	faresbasbs	Ancient Books (IOI17_books)	C++14	100 / 100	206 ms	42232 KB

books

#include <bits/stdc++.h>
#include "books.h"
using namespace std;
long long n,ans,mini,maxi,num,cyc[1000001],L[1000001],R[1000001];
bool seen[1000001];
vector<int> p;

void dfs(long long curr){
	seen[curr] = 1 , L[num] = min(L[num],curr) , R[num] = max(R[num],curr) , cyc[curr] = num;
	mini = min(mini,curr) , maxi = max(maxi,curr);
	if(!seen[p[curr]]){
		dfs(p[curr]);
	}
}

void extend(long long &l , long long &r){
	long long ll = min({l,L[cyc[l]],L[cyc[r]]}) , rr = max({r,R[cyc[l]],R[cyc[r]]});
	while(ll < l || r < rr){
		if(ll < l){
			l -= 1;
			ll = min(ll,L[cyc[l]]);
			rr = max(rr,R[cyc[l]]);
		}else{
			r += 1;
			ll = min(ll,L[cyc[r]]);
			rr = max(rr,R[cyc[r]]);
		}
	}
}

long long getans(long long l , long long r){
	long long ret = 0;
	while(l > mini || r < maxi){
		extend(l,r);
		bool nxtl = false;
		long long costl = 0 , ll = l ,rl = r;
		while(true){
			if(ll <= mini){
				break;
			}
			ll -= 1;
			costl += 2;
			extend(ll,rl);
			if(rl > r){
				nxtl = true;
				break;
			}
		}
		bool nxtr = false;
		long long costr = 0 , lr = l , rr = r;
		while(true){
			if(rr >= maxi){
				break;
			}
			rr += 1;
			costr += 2;
			extend(lr,rr);
			if(lr < l){
				nxtr = true;
				break;
			}
		}
		if(nxtl && nxtr){
			ret += min(costl,costr);
		}else{
			ret += costl+costr;
		}
		l = min(ll,lr) , r = max(rl,rr);
	}
	return ret;
}

long long minimum_walk(vector<int> P , int s){
	p = P , n = p.size() , mini = maxi = s;
	for(long long i = 0 ; i < n ; i += 1){
		ans += abs(p[i]-i);
		if(seen[i]){
			continue;
		}
		L[num] = R[num] = i , cyc[i] = num;
		if(i != p[i]){
			dfs(i);
		}
		num += 1;
	}
	return ans+getans(s,s);
}

Subtask #1

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	336 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	336 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	336 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	436 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	332 KB	Output is correct
29	Correct	1 ms	332 KB	Output is correct

Subtask #3

28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	336 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	336 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	436 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	332 KB	Output is correct
29	Correct	1 ms	332 KB	Output is correct
30	Correct	206 ms	20864 KB	Output is correct
31	Correct	205 ms	20732 KB	Output is correct
32	Correct	138 ms	35560 KB	Output is correct
33	Correct	161 ms	31616 KB	Output is correct
34	Correct	146 ms	31696 KB	Output is correct
35	Correct	153 ms	29368 KB	Output is correct
36	Correct	138 ms	24844 KB	Output is correct
37	Correct	132 ms	21372 KB	Output is correct
38	Correct	134 ms	20932 KB	Output is correct
39	Correct	135 ms	20848 KB	Output is correct
40	Correct	135 ms	20852 KB	Output is correct
41	Correct	164 ms	20852 KB	Output is correct
42	Correct	151 ms	20756 KB	Output is correct
43	Correct	142 ms	32388 KB	Output is correct

Subtask #4

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct

Subtask #5

30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	336 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	336 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	436 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	332 KB	Output is correct
29	Correct	1 ms	332 KB	Output is correct
30	Correct	206 ms	20864 KB	Output is correct
31	Correct	205 ms	20732 KB	Output is correct
32	Correct	138 ms	35560 KB	Output is correct
33	Correct	161 ms	31616 KB	Output is correct
34	Correct	146 ms	31696 KB	Output is correct
35	Correct	153 ms	29368 KB	Output is correct
36	Correct	138 ms	24844 KB	Output is correct
37	Correct	132 ms	21372 KB	Output is correct
38	Correct	134 ms	20932 KB	Output is correct
39	Correct	135 ms	20848 KB	Output is correct
40	Correct	135 ms	20852 KB	Output is correct
41	Correct	164 ms	20852 KB	Output is correct
42	Correct	151 ms	20756 KB	Output is correct
43	Correct	142 ms	32388 KB	Output is correct
44	Correct	1 ms	332 KB	Output is correct
45	Correct	1 ms	332 KB	Output is correct
46	Correct	1 ms	332 KB	Output is correct
47	Correct	1 ms	332 KB	Output is correct
48	Correct	1 ms	332 KB	Output is correct
49	Correct	1 ms	332 KB	Output is correct
50	Correct	1 ms	332 KB	Output is correct
51	Correct	1 ms	332 KB	Output is correct
52	Correct	1 ms	332 KB	Output is correct
53	Correct	1 ms	332 KB	Output is correct
54	Correct	1 ms	332 KB	Output is correct
55	Correct	1 ms	332 KB	Output is correct
56	Correct	1 ms	332 KB	Output is correct
57	Correct	1 ms	332 KB	Output is correct
58	Correct	1 ms	336 KB	Output is correct
59	Correct	1 ms	332 KB	Output is correct
60	Correct	1 ms	332 KB	Output is correct
61	Correct	1 ms	332 KB	Output is correct
62	Correct	1 ms	332 KB	Output is correct
63	Correct	1 ms	332 KB	Output is correct
64	Correct	139 ms	32252 KB	Output is correct
65	Correct	143 ms	40132 KB	Output is correct
66	Correct	143 ms	28008 KB	Output is correct
67	Correct	157 ms	27844 KB	Output is correct
68	Correct	15 ms	3380 KB	Output is correct
69	Correct	14 ms	3076 KB	Output is correct
70	Correct	14 ms	3404 KB	Output is correct
71	Correct	15 ms	3900 KB	Output is correct
72	Correct	14 ms	4232 KB	Output is correct
73	Correct	14 ms	2892 KB	Output is correct
74	Correct	149 ms	38392 KB	Output is correct
75	Correct	145 ms	38388 KB	Output is correct
76	Correct	145 ms	38980 KB	Output is correct
77	Correct	144 ms	39024 KB	Output is correct
78	Correct	146 ms	37492 KB	Output is correct
79	Correct	149 ms	37444 KB	Output is correct
80	Correct	132 ms	42232 KB	Output is correct
81	Correct	150 ms	35436 KB	Output is correct
82	Correct	153 ms	35296 KB	Output is correct
83	Correct	173 ms	33516 KB	Output is correct
84	Correct	148 ms	32240 KB	Output is correct
85	Correct	144 ms	29676 KB	Output is correct
86	Correct	138 ms	28404 KB	Output is correct
87	Correct	154 ms	40860 KB	Output is correct
88	Correct	154 ms	38564 KB	Output is correct
89	Correct	150 ms	34700 KB	Output is correct
90	Correct	136 ms	27888 KB	Output is correct
91	Correct	142 ms	27636 KB	Output is correct
92	Correct	146 ms	27532 KB	Output is correct