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Submission #109654

# Submission time Handle Problem Language Result Execution time Memory
109654 2019-05-07T09:09:03 Z Kepperoni Ancient Books (IOI17_books) C++14
50 / 100
 276 ms 40660 KB 
#include "books.h"
#include <bits/stdc++.h>
#define x first
#define y second
#define pb push_back

using namespace std;

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

const ll MAXN = 1e6 + 10;

vector<pii> pi;
bool vis[MAXN];
ll n;
ll ans;
bool done[MAXN];
ll nr[MAXN], nl[MAXN];

long long minimum_walk(std::vector<int> p, int s) {
	n = p.size();
	for(int i=0; i<n; i++){
		ans += abs(i - p[i]);
		//cout << i << " " << p[i] << endl;
	}

	for(int i=0; i<n; i++){
		if(!vis[i]){
			ll cl = i, cr = i;
			ll cu = i;
			while(!vis[cu]){
				cl = min(cu, cl);
				cr = max(cu, cr);
				vis[cu] = 1;
				cu = p[cu];
			}
			pi.pb({cl, cr});
		}
	}

	for(int i=0; i<n; i++) nr[i] = nl[i] = -1;

	//cout << ans << endl;

	ll lar = s, fil = s;
	ll cl = s, cr = s;
	for(int i=0; i<pi.size(); i++){
		if(pi[i].x <= s && s <= pi[i].y){
			cl = min(cl, pi[i].x);
			cr = max(cr, pi[i].y);
		}

		nr[pi[i].x] = pi[i].y;
		nl[pi[i].y] = pi[i].x;

		if(pi[i].x != pi[i].y){
			lar = max(lar, pi[i].y);
			fil = min(fil, pi[i].x);
		}
	}

	//cout << fil << " " << lar << endl;

	for(int i=s; i<=lar; i++){
		if(i > cr){
			ans += 2;
			cr++;
		}

		if(nr[i] != -1)
			cr = max(cr, nr[i]);
	}

	for(int i=s; i>=fil; i--){
		if(i < cl){
			ans += 2;
			cl--;
		}

		if(nl[i] != -1)
			cl = min(cl, nl[i]);
	}

	return ans;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:48:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<pi.size(); i++){
               ~^~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 3 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 3 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 3 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 3 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 3 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 3 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 3 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 276 ms 24796 KB Output is correct
31 Correct 250 ms 24824 KB Output is correct
32 Correct 210 ms 40660 KB Output is correct
33 Correct 191 ms 35800 KB Output is correct
34 Correct 213 ms 35768 KB Output is correct
35 Correct 180 ms 33624 KB Output is correct
36 Correct 179 ms 28868 KB Output is correct
37 Correct 159 ms 25452 KB Output is correct
38 Correct 173 ms 24952 KB Output is correct
39 Correct 170 ms 25020 KB Output is correct
40 Correct 178 ms 24796 KB Output is correct
41 Correct 220 ms 24892 KB Output is correct
42 Correct 218 ms 24828 KB Output is correct
43 Correct 190 ms 36544 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 384 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 3 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 3 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 3 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 276 ms 24796 KB Output is correct
31 Correct 250 ms 24824 KB Output is correct
32 Correct 210 ms 40660 KB Output is correct
33 Correct 191 ms 35800 KB Output is correct
34 Correct 213 ms 35768 KB Output is correct
35 Correct 180 ms 33624 KB Output is correct
36 Correct 179 ms 28868 KB Output is correct
37 Correct 159 ms 25452 KB Output is correct
38 Correct 173 ms 24952 KB Output is correct
39 Correct 170 ms 25020 KB Output is correct
40 Correct 178 ms 24796 KB Output is correct
41 Correct 220 ms 24892 KB Output is correct
42 Correct 218 ms 24828 KB Output is correct
43 Correct 190 ms 36544 KB Output is correct
44 Incorrect 3 ms 384 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45 Halted 0 ms 0 KB -