Submission #289441

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
289441	2020-09-02T16:31:13 Z	eohomegrownapps	Ancient Books (IOI17_books)	C++14	Compilation error	0 ms	0 KB

books

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

typedef long long ll;

vector<ll> cycle;
vector<ll> p;
ll n;

ll minc = 1e9;
ll maxc = -1e9;

ll findcycle(ll i, ll ptr){
	cycle[i] = ptr;
	minc=min(minc,i);
	maxc=max(maxc,i);
	if (cycle[p[i]]!=-1){
		return abs(i-p[i]);
	} else {
		return abs(i-p[i]) + findcycle(p[i], ptr);
	}
}

ll minimum_walk(std::vector<int> px, int s) {
	p = px;
	n = p.size();
	cycle.resize(n,-1);

	ll cycledist = 0;
	ll ptr = 0;
	vector<ll> cyclewidth(n);
	for (ll i = 0; i<n; i++){
		if (cycle[i]!=-1){continue;}
		minc=1e9;maxc=-1e9;
		ll dist = findcycle(i,ptr);
		cyclewidth[minc]++;
		cyclewidth[maxc]--;
		cycledist+=dist;
		ptr++;
	}

	ll prev = 0;
	bool iszero = true;
	ll ctr = 0;
	for (ll i = 0; i<n; i++){
		ctr+=cyclewidth[i];
		if (iszero&&ctr>0){
			cycledist+=2*(i-prev);
			iszero = false;
		} else if ((!iszero)&&ctr==0){
			prev = i;
			iszero = true;
		}
	}
	return cycledist;
}

Compilation message

books.cpp: In function 'll minimum_walk(std::vector<int>, int)':
books.cpp:26:6: error: no match for 'operator=' (operand types are 'std::vector<long long int>' and 'std::vector<int>')
   26 |  p = px;
      |      ^~
In file included from /usr/include/c++/9/vector:72,
                 from books.h:1,
                 from books.cpp:1:
/usr/include/c++/9/bits/vector.tcc:198:5: note: candidate: 'std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(const std::vector<_Tp, _Alloc>&) [with _Tp = long long int; _Alloc = std::allocator<long long int>]'
  198 |     vector<_Tp, _Alloc>::
      |     ^~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/vector.tcc:199:42: note:   no known conversion for argument 1 from 'std::vector<int>' to 'const std::vector<long long int>&'
  199 |     operator=(const vector<_Tp, _Alloc>& __x)
      |               ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
In file included from /usr/include/c++/9/vector:67,
                 from books.h:1,
                 from books.cpp:1:
/usr/include/c++/9/bits/stl_vector.h:706:7: note: candidate: 'std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(std::vector<_Tp, _Alloc>&&) [with _Tp = long long int; _Alloc = std::allocator<long long int>]'
  706 |       operator=(vector&& __x) noexcept(_Alloc_traits::_S_nothrow_move())
      |       ^~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:706:26: note:   no known conversion for argument 1 from 'std::vector<int>' to 'std::vector<long long int>&&'
  706 |       operator=(vector&& __x) noexcept(_Alloc_traits::_S_nothrow_move())
      |                 ~~~~~~~~~^~~
/usr/include/c++/9/bits/stl_vector.h:727:7: note: candidate: 'std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(std::initializer_list<_Tp>) [with _Tp = long long int; _Alloc = std::allocator<long long int>]'
  727 |       operator=(initializer_list<value_type> __l)
      |       ^~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:727:46: note:   no known conversion for argument 1 from 'std::vector<int>' to 'std::initializer_list<long long int>'
  727 |       operator=(initializer_list<value_type> __l)
      |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~