oj.uz

Submission #283898

# Submission time Handle Problem Language Result Execution time Memory
283898 2020-08-26T09:03:27 Z erd1 Ancient Books (IOI17_books) C++14
50 / 100
 533 ms 74912 KB 
#include "books.h"

#include<bits/stdc++.h>

using namespace std;
#define pb push_back
#define ff first
#define ss second
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
typedef pair<int, int> pii;
typedef long long lld;
typedef long double ld;

template<typename Iter>
ostream& outIt(ostream& out, Iter b, Iter e){
	for(Iter i = b; i != e; ++i)
		out << (i == b?"":" ") << *i;
	return out;
}
template<typename T1, typename T2>
ostream& operator<<(ostream& out, pair<T1, T2> p){
	return out << '(' << p.ff << ", " << p.ss << ')';
}
template<typename T>
ostream& operator<<(ostream& out, vector<T> v){
	return outIt(out << '[', all(v)) << ']';
}
vector<pii> cs;
vector<int> poss, dist, gone;
set<int> not_yet;
long long minimum_walk(vector<int> p, int s) {
	lld ans = 0;
	int pmin = INT_MAX, pmax = INT_MIN;
	for(int i = 0; i < p.size(); i++)if(p[i] != i)ans += abs(p[i]-i), cs.pb({min(i, p[i]), max(i, p[i])}), pmin = min(pmin, i), pmax = max(pmax, i);
	if(ans == 0)return 0;
	sort(all(cs));
	int r = cs.front().ff;
	gone.resize(p.size()), poss.resize(p.size()), dist.resize(p.size());
	poss[r] = 1;
	bool fl = true;
	for(int i = 0; i < cs.size(); i++){
		if(cs[i].ff > s && s > r)fl = false;
		if(cs[i].ff > r) poss[r] = poss[cs[i].ff] = 1;
		ans += 2*max(0, cs[i].ff - r);
		r = max(r, cs[i].ss);
	}
	poss[r] = 1;
	//cout << poss << endl;
	if(!fl)return ans;
	for(int i = 0; i < p.size(); i++)not_yet.insert(i);
	for(int d = 0, l = s, r = s; d < p.size(); d++, l--, r++){
		while(not_yet.lower_bound(l) != not_yet.upper_bound(r)){
			int ta = *not_yet.lower_bound(l);
			not_yet.erase(ta);
			//cout << ta << endl;
			if(poss[ta])return ans + 2*d;
			for(int x = p[ta]; not_yet.count(x); x = p[x]){
				not_yet.erase(x), l = min(l, x), r = max(l, x);
				if(poss[x])return ans + 2*d;
				//cout << x << endl;
			}
		}
	}
	assert(false);




	for(int i = 0; i < p.size(); i++)dist[i] = abs(i-s);
	//cout << dist << gone << endl;
	for(int i = 0; i < p.size(); i++){
		pii mins = {INT_MAX, -1};
		for(int j = 0; j < p.size(); j++)if(!gone[j])mins = min(mins, {dist[j], j});
		gone[mins.ss] = true;

		int ll = mins.ss, rr = p[mins.ss]; if(ll > rr)swap(ll, rr);
		for(int j = 0; j < p.size(); j++){
			dist[j] = min(dist[j], mins.ff + (ll <= j && j <= rr? 0:abs(mins.ss - j)));
		}
	}
	//for(int i = 0; i < p.size(); i++)if(p[i] == i)dist[i] *= 0;
	//cout << dist << endl;
	//return ans + 2 * (*max_element(all(dist)));
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:35:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |  for(int i = 0; i < p.size(); i++)if(p[i] != i)ans += abs(p[i]-i), cs.pb({min(i, p[i]), max(i, p[i])}), pmin = min(pmin, i), pmax = max(pmax, i);
      |                 ~~^~~~~~~~~~
books.cpp:42:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |  for(int i = 0; i < cs.size(); i++){
      |                 ~~^~~~~~~~~~~
books.cpp:51:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |  for(int i = 0; i < p.size(); i++)not_yet.insert(i);
      |                 ~~^~~~~~~~~~
books.cpp:52:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |  for(int d = 0, l = s, r = s; d < p.size(); d++, l--, r++){
      |                               ~~^~~~~~~~~~
books.cpp:70:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |  for(int i = 0; i < p.size(); i++)dist[i] = abs(i-s);
      |                 ~~^~~~~~~~~~
books.cpp:72:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |  for(int i = 0; i < p.size(); i++){
      |                 ~~^~~~~~~~~~
books.cpp:74:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |   for(int j = 0; j < p.size(); j++)if(!gone[j])mins = min(mins, {dist[j], j});
      |                  ~~^~~~~~~~~~
books.cpp:78:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |   for(int j = 0; j < p.size(); j++){
      |                  ~~^~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 526 ms 74784 KB Output is correct
31 Correct 533 ms 74912 KB Output is correct
32 Correct 129 ms 8184 KB Output is correct
33 Correct 391 ms 70880 KB Output is correct
34 Correct 399 ms 70756 KB Output is correct
35 Correct 427 ms 72148 KB Output is correct
36 Correct 438 ms 74072 KB Output is correct
37 Correct 464 ms 74684 KB Output is correct
38 Correct 486 ms 74708 KB Output is correct
39 Correct 484 ms 74708 KB Output is correct
40 Correct 495 ms 74708 KB Output is correct
41 Correct 532 ms 74708 KB Output is correct
42 Correct 517 ms 74708 KB Output is correct
43 Correct 434 ms 70876 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3310'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 526 ms 74784 KB Output is correct
31 Correct 533 ms 74912 KB Output is correct
32 Correct 129 ms 8184 KB Output is correct
33 Correct 391 ms 70880 KB Output is correct
34 Correct 399 ms 70756 KB Output is correct
35 Correct 427 ms 72148 KB Output is correct
36 Correct 438 ms 74072 KB Output is correct
37 Correct 464 ms 74684 KB Output is correct
38 Correct 486 ms 74708 KB Output is correct
39 Correct 484 ms 74708 KB Output is correct
40 Correct 495 ms 74708 KB Output is correct
41 Correct 532 ms 74708 KB Output is correct
42 Correct 517 ms 74708 KB Output is correct
43 Correct 434 ms 70876 KB Output is correct
44 Incorrect 1 ms 384 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3310'
45 Halted 0 ms 0 KB -