Submission #51059

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
51059	2018-06-15T22:22:06 Z	FLDutchman	Ancient Books (IOI17_books)	C++14	22 / 100	415 ms	72100 KB

books

#include "books.h"
#include "bits/stdc++.h"
using namespace std;

#define pb push_back
#define fst first
#define snd second
#define FOR(i, l, r) for(int i = l; i < r; i++)

typedef vector<int> vi;
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<ii> vii;

const int NMAX = 1e6 + 10;
const int INF = 1e9;

vi cycles[NMAX];
int numCycles, N;
bitset<NMAX> vis;
vi point;

void flood(int n, int c){
	//cout << "Flood " << n << " " << c << endl;
	cycles[c].pb(n);
	int k = point[n];
	vis[n] = 1;
	if(!vis[k]) flood(k, c); 
}

// 
ii bounds(int p, int c){
	//cout << p << endl;
	auto &cy = cycles[c];	
	if(cy[0] > p) return {-1, cy[0]};
	if(cy.back() <= p) return {cy.back(), INF};
	auto x = lower_bound(cycles[c].begin(), cycles[c].end(), p);
	return {*x, *(++x)};
}

long long minimum_walk(std::vector<int> p, int s) {
	vis.reset();
	point = p;
	N = p.size();
	FOR(i, 0, N) if(!vis[i]) flood(i, numCycles++);
	FOR(i, 0, numCycles) sort(cycles[i].begin(), cycles[i].end());
	//cout << "Preprocessed" << endl;
	//ii k = bounds(2, 1);
	//cout << k.fst << " " << k.snd << endl;
	//Find segments:
	vii segs;
	int rm = 0;
	int lm = 0;
	//cout << "numCycles: " << numCycles << endl;
	FOR(i, 0, numCycles){
		//cout << lm << " " << rm << endl;
		if(cycles[i].size() == 1) continue;
		if(rm <= cycles[i][0]) {
			if(rm - lm > 1) segs.pb({lm, rm});
			lm = cycles[i][0]; rm = cycles[i].back()+1;
		}
		rm = max(rm, cycles[i].back()+1);
	}

	if(rm - lm > 1) segs.pb({lm, rm});

	//cout << segs.size() << endl;
	int dist = 0;
	if(segs.size() > 0)
		dist  = segs[0].fst*2;
	//cout << dist << endl;
	FOR(i, 0, N) dist += abs(i - p[i]);
	//cout << dist << endl;
	//cout << segs.size() - 1 << endl;
	//FOR(i, 0, (int)segs.size()) cout << segs[i].fst << " " << segs[i].snd << endl;
	FOR(i, 0, (int)segs.size()-1){
		dist += 2*(segs[i+1].fst - (segs[i].snd-1) );
	}
	//cout << "sfdf" << endl;
	return dist;
}
/*
3 1
0 2 1

4 0
0 1 3 2

4 0
2 3 0 1
4 0
0 1 2 3

10 0
0 1 4 5 2 3 7 6 9 8
*/

Subtask #1
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	22 ms	23892 KB	Output is correct
2	Correct	21 ms	23912 KB	Output is correct
3	Correct	25 ms	24124 KB	Output is correct
4	Correct	21 ms	24124 KB	Output is correct
5	Correct	21 ms	24128 KB	Output is correct
6	Correct	21 ms	24204 KB	Output is correct
7	Correct	21 ms	24204 KB	Output is correct
8	Correct	21 ms	24204 KB	Output is correct
9	Correct	21 ms	24204 KB	Output is correct
10	Correct	21 ms	24204 KB	Output is correct
11	Correct	25 ms	24204 KB	Output is correct
12	Correct	21 ms	24204 KB	Output is correct
13	Correct	21 ms	24204 KB	Output is correct
14	Correct	21 ms	24204 KB	Output is correct
15	Correct	21 ms	24204 KB	Output is correct
16	Correct	22 ms	24292 KB	Output is correct
17	Correct	24 ms	24292 KB	Output is correct
18	Correct	21 ms	24292 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	22 ms	23892 KB	Output is correct
2	Correct	21 ms	23912 KB	Output is correct
3	Correct	25 ms	24124 KB	Output is correct
4	Correct	21 ms	24124 KB	Output is correct
5	Correct	21 ms	24128 KB	Output is correct
6	Correct	21 ms	24204 KB	Output is correct
7	Correct	21 ms	24204 KB	Output is correct
8	Correct	21 ms	24204 KB	Output is correct
9	Correct	21 ms	24204 KB	Output is correct
10	Correct	21 ms	24204 KB	Output is correct
11	Correct	25 ms	24204 KB	Output is correct
12	Correct	21 ms	24204 KB	Output is correct
13	Correct	21 ms	24204 KB	Output is correct
14	Correct	21 ms	24204 KB	Output is correct
15	Correct	21 ms	24204 KB	Output is correct
16	Correct	22 ms	24292 KB	Output is correct
17	Correct	24 ms	24292 KB	Output is correct
18	Correct	21 ms	24292 KB	Output is correct
19	Correct	21 ms	24292 KB	Output is correct
20	Correct	25 ms	24292 KB	Output is correct
21	Correct	21 ms	24292 KB	Output is correct
22	Correct	21 ms	24292 KB	Output is correct
23	Correct	21 ms	24292 KB	Output is correct
24	Correct	21 ms	24292 KB	Output is correct
25	Correct	22 ms	24292 KB	Output is correct
26	Correct	22 ms	24292 KB	Output is correct
27	Correct	22 ms	24292 KB	Output is correct
28	Correct	22 ms	24292 KB	Output is correct
29	Correct	22 ms	24292 KB	Output is correct

Subtask #3
0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	22 ms	23892 KB	Output is correct
2	Correct	21 ms	23912 KB	Output is correct
3	Correct	25 ms	24124 KB	Output is correct
4	Correct	21 ms	24124 KB	Output is correct
5	Correct	21 ms	24128 KB	Output is correct
6	Correct	21 ms	24204 KB	Output is correct
7	Correct	21 ms	24204 KB	Output is correct
8	Correct	21 ms	24204 KB	Output is correct
9	Correct	21 ms	24204 KB	Output is correct
10	Correct	21 ms	24204 KB	Output is correct
11	Correct	25 ms	24204 KB	Output is correct
12	Correct	21 ms	24204 KB	Output is correct
13	Correct	21 ms	24204 KB	Output is correct
14	Correct	21 ms	24204 KB	Output is correct
15	Correct	21 ms	24204 KB	Output is correct
16	Correct	22 ms	24292 KB	Output is correct
17	Correct	24 ms	24292 KB	Output is correct
18	Correct	21 ms	24292 KB	Output is correct
19	Correct	21 ms	24292 KB	Output is correct
20	Correct	25 ms	24292 KB	Output is correct
21	Correct	21 ms	24292 KB	Output is correct
22	Correct	21 ms	24292 KB	Output is correct
23	Correct	21 ms	24292 KB	Output is correct
24	Correct	21 ms	24292 KB	Output is correct
25	Correct	22 ms	24292 KB	Output is correct
26	Correct	22 ms	24292 KB	Output is correct
27	Correct	22 ms	24292 KB	Output is correct
28	Correct	22 ms	24292 KB	Output is correct
29	Correct	22 ms	24292 KB	Output is correct
30	Incorrect	415 ms	72100 KB	3rd lines differ - on the 1st token, expected: '333035179244', found: '-1972269844'
31	Halted	0 ms	0 KB	-

Subtask #4
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	21 ms	72100 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	22 ms	23892 KB	Output is correct
2	Correct	21 ms	23912 KB	Output is correct
3	Correct	25 ms	24124 KB	Output is correct
4	Correct	21 ms	24124 KB	Output is correct
5	Correct	21 ms	24128 KB	Output is correct
6	Correct	21 ms	24204 KB	Output is correct
7	Correct	21 ms	24204 KB	Output is correct
8	Correct	21 ms	24204 KB	Output is correct
9	Correct	21 ms	24204 KB	Output is correct
10	Correct	21 ms	24204 KB	Output is correct
11	Correct	25 ms	24204 KB	Output is correct
12	Correct	21 ms	24204 KB	Output is correct
13	Correct	21 ms	24204 KB	Output is correct
14	Correct	21 ms	24204 KB	Output is correct
15	Correct	21 ms	24204 KB	Output is correct
16	Correct	22 ms	24292 KB	Output is correct
17	Correct	24 ms	24292 KB	Output is correct
18	Correct	21 ms	24292 KB	Output is correct
19	Correct	21 ms	24292 KB	Output is correct
20	Correct	25 ms	24292 KB	Output is correct
21	Correct	21 ms	24292 KB	Output is correct
22	Correct	21 ms	24292 KB	Output is correct
23	Correct	21 ms	24292 KB	Output is correct
24	Correct	21 ms	24292 KB	Output is correct
25	Correct	22 ms	24292 KB	Output is correct
26	Correct	22 ms	24292 KB	Output is correct
27	Correct	22 ms	24292 KB	Output is correct
28	Correct	22 ms	24292 KB	Output is correct
29	Correct	22 ms	24292 KB	Output is correct
30	Incorrect	415 ms	72100 KB	3rd lines differ - on the 1st token, expected: '333035179244', found: '-1972269844'
31	Halted	0 ms	0 KB	-

Submission #51059

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 10.0 / 10.0

Subtask #3 0 / 28.0

Subtask #4 0 / 20.0

Subtask #5 0 / 30.0

Subtask #1
12.0 / 12.0

Subtask #2
10.0 / 10.0

Subtask #3
0 / 28.0

Subtask #4
0 / 20.0

Subtask #5
0 / 30.0