Submission #833718

#	Time	Username	Problem	Language	Result	Execution time	Memory
833718		Josia	Ancient Books (IOI17_books)	C++17	Compilation error	0 ms	0 KiB

books

#include "books.h"
#include <bits/stdc++.h>

using namespace std;

#define int int64_t


vector<int> p;
int s;
int n;
int res;

vector<int> cycles;
pair<int, int> getCycle(int v, int ind) {
	if (cycles[v] != -1) return {-1, -1};

	pair<int, int> range = {1e9, -1e9};

	while (cycles[v] == -1) {
		cycles[v] = ind;
		range.first = min(range.first, v);
		range.second = max(range.second, v);
		res += abs(p[v]-v);
		v = p[v];
	}

	return range;
}


long long minimum_walk(vector<signed> _p, signed _s) {
	s = _s;
	n = _p.size();
	p.resize(n); for (int i = 0; i<n; i++) p[i] = _p[i];

	cycles.assign(n, -1);
	res = 0;

	vector<pair<int, int>> ranges;
	for (int i = 0; i<n; i++) {
		ranges.push_back(getCycle(i, i));
		if (ranges.back().first == ranges.back().second) ranges.pop_back();
	}

	ranges.push_back({s, s});

	sort(ranges.begin(), ranges.end());


	set<int> active = {ranges[0].second};

	for (int i = 1; i<(int)ranges.size(); i++) {
		res += 2*max(0ll, ranges[i].first-*active.rbegin());
		active.insert(ranges[i].second);
	}


	return res;
}

Compilation message (stderr)

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:54:53: error: no matching function for call to 'max(long long int, long int)'
   54 |   res += 2*max(0ll, ranges[i].first-*active.rbegin());
      |                                                     ^
In file included from /usr/include/c++/10/vector:60,
                 from books.h:1,
                 from books.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:254:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
books.cpp:54:53: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'long int')
   54 |   res += 2*max(0ll, ranges[i].first-*active.rbegin());
      |                                                     ^
In file included from /usr/include/c++/10/vector:60,
                 from books.h:1,
                 from books.cpp:1:
/usr/include/c++/10/bits/stl_algobase.h:300:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
books.cpp:54:53: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'long int')
   54 |   res += 2*max(0ll, ranges[i].first-*active.rbegin());
      |                                                     ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from books.cpp:2:
/usr/include/c++/10/bits/stl_algo.h:3480:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3480 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3480:5: note:   template argument deduction/substitution failed:
books.cpp:54:53: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   54 |   res += 2*max(0ll, ranges[i].first-*active.rbegin());
      |                                                     ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from books.cpp:2:
/usr/include/c++/10/bits/stl_algo.h:3486:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3486 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3486:5: note:   template argument deduction/substitution failed:
books.cpp:54:53: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   54 |   res += 2*max(0ll, ranges[i].first-*active.rbegin());
      |                                                     ^