Submission #445877

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
445877	2021-07-20T04:43:13 Z	blue	Flood (IOI07_flood)	C++17	Compilation error	0 ms	0 KB

flood

#include <iostream>
#include <vector>
#include <deque>
#include <algorithm>
#include <bitset>
using namespace std;

const int maxN = 100'000;
const int maxW = 200'000;
vector<int> X(1+maxN), Y(1+maxN);
vector<int> A(1+maxW), B(1+maxW);

int N;
int W;

// vector<bool> T(1+maxN, 0), L(1+maxN, 0), D(1+maxN, 0), R(1+maxN, 0);
bitset<1+maxN> T;
bitset<1+maxN> L;
bitset<1+maxN> D;
bitset<1+maxN> R;

const int maxR = 4*maxN + 4;
vector< vector<int> > R_edge(1+maxR, vector<int>(0));
vector< vector<bool> > R_wt(1+maxR, vector<int>(0));

void add_R_edge(int u, int v, int w)
{
    R_edge[u].push_back(v);
    R_wt[u].push_back(w);

    R_edge[v].push_back(u);
    R_wt[v].push_back(w);
}

/*
    0   1
      P
    2   3

    4*i + 0
    4*i + 1
    4*i + 2
    4*i + 3
*/

const int TL = 0;
const int TR = 1;
const int DL = 2;
const int DR = 3;

const int INF = 1e9;

int main()
{
    // bitset<maxN> H;
    // H.set(0, 1);
    // H.set(1, 1);
    // cout << H[0] + H[1] << '\n';

    cin >> N;
    for(int i = 1; i <= N; i++)
        cin >> X[i] >> Y[i];


    cin >> W;
    for(int j = 1; j <= W; j++)
    {
        cin >> A[j] >> B[j];

        if(X[ A[j] ] == X[ B[j] ])
        {
            if(Y[ A[j] ] > Y[ B[j] ])
                swap(A[j], B[j]);

            // D[ A[j] ] = 1;
            D.set(A[j], 1);
            // T[ B[j] ] = 1;
            T.set(B[j], 1);

            add_R_edge(4*A[j] + DL, 4*B[j] + TL, 0);
            add_R_edge(4*A[j] + DR, 4*B[j] + TR, 0);
        }
        else //if(Y[ A[j] ] == Y[ B[j] ])
        {
            if(X[ A[j] ] > X[ B[j] ])
                swap(A[j], B[j]);

            // R[ A[j] ] = 1;
            // L[ B[j] ] = 1;
            R.set(A[j], 1);
            L.set(B[j], 1);

            add_R_edge(4*A[j] + TR, 4*B[j] + TL, 0);
            add_R_edge(4*A[j] + DR, 4*B[j] + DL, 0);
        }
    }







    for(int i = 1; i <= N; i++)
    {
        add_R_edge(4*i + TL, 4*i + TR, T[i]);
        add_R_edge(4*i + TL, 4*i + DL, L[i]);
        add_R_edge(4*i + TR, 4*i + DR, R[i]);
        add_R_edge(4*i + DL, 4*i + DR, D[i]);
    }

    // cerr << "check\n";





    vector<int> outside_dist(1+maxR, INF);
    deque<int> tbv;

    vector<int> O(N);
    for(int i = 0; i < N; i++) O[i] = i+1;

    sort(O.begin(), O.end(), [] (int a1, int a2)
    {
        return X[a1] < X[a2];
    });


    for(int U: O)
    {
        // cerr << "U = " << U << '\n';
        if(outside_dist[4*U + TL] != INF) continue;
        outside_dist[4*U + TL] = 0;

        tbv.push_front(4*U + TL);

        while(!tbv.empty())
        {
            int u = tbv.front();
            tbv.pop_front();

            for(int e = 0; e < R_edge[u].size(); e++)
            {
                int v = R_edge[u][e];
                int w = R_wt[u][e];

                if(outside_dist[v] <= outside_dist[u] + w) continue;

                outside_dist[v] = outside_dist[u] + w;

                if(w == 0) tbv.push_front(v);
                else tbv.push_back(v);
            }
        }
    }

    // cerr << "check\n";


    vector<int> res;

    for(int j = 1; j <= W; j++)
    {
        if(X[ A[j] ] == X[ B[j] ])
        {
            if(outside_dist[4*A[j] + DL] == outside_dist[4*A[j] + DR])
            {
                res.push_back(j);
            }
        }
        else //if(Y[ A[j] ] == Y[ B[j] ])
        {
            if(outside_dist[4*A[j] + TR] == outside_dist[4*A[j] + DR])
            {
                res.push_back(j);
            }
        }
    }

    cout << res.size() << '\n';
    for(int r:res) cout << r << '\n';
}

Compilation message

flood.cpp:24:51: error: no matching function for call to 'std::vector<std::vector<bool> >::vector(int, std::vector<int>)'
   24 | vector< vector<bool> > R_wt(1+maxR, vector<int>(0));
      |                                                   ^
In file included from /usr/include/c++/10/vector:67,
                 from flood.cpp:2:
/usr/include/c++/10/bits/stl_vector.h:653:2: note: candidate: 'template<class _InputIterator, class> std::vector<_Tp, _Alloc>::vector(_InputIterator, _InputIterator, const allocator_type&) [with _InputIterator = _InputIterator; <template-parameter-2-2> = <template-parameter-1-2>; _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >]'
  653 |  vector(_InputIterator __first, _InputIterator __last,
      |  ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:653:2: note:   template argument deduction/substitution failed:
flood.cpp:24:51: note:   deduced conflicting types for parameter '_InputIterator' ('int' and 'std::vector<int>')
   24 | vector< vector<bool> > R_wt(1+maxR, vector<int>(0));
      |                                                   ^
In file included from /usr/include/c++/10/vector:67,
                 from flood.cpp:2:
/usr/include/c++/10/bits/stl_vector.h:625:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::initializer_list<_Tp>, const allocator_type&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<std::vector<bool> >]'
  625 |       vector(initializer_list<value_type> __l,
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:625:43: note:   no known conversion for argument 1 from 'int' to 'std::initializer_list<std::vector<bool> >'
  625 |       vector(initializer_list<value_type> __l,
      |              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_vector.h:607:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, const allocator_type&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<std::vector<bool> >]'
  607 |       vector(vector&& __rv, const allocator_type& __m)
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:607:23: note:   no known conversion for argument 1 from 'int' to 'std::vector<std::vector<bool> >&&'
  607 |       vector(vector&& __rv, const allocator_type& __m)
      |              ~~~~~~~~~^~~~
/usr/include/c++/10/bits/stl_vector.h:589:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, const allocator_type&, std::false_type) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<std::vector<bool> >; std::false_type = std::integral_constant<bool, false>]'
  589 |       vector(vector&& __rv, const allocator_type& __m, false_type)
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:589:7: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/10/bits/stl_vector.h:585:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, const allocator_type&, std::true_type) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<std::vector<bool> >; std::true_type = std::integral_constant<bool, true>]'
  585 |       vector(vector&& __rv, const allocator_type& __m, true_type) noexcept
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:585:7: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/10/bits/stl_vector.h:575:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&, const allocator_type&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<std::vector<bool> >]'
  575 |       vector(const vector& __x, const allocator_type& __a)
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:575:28: note:   no known conversion for argument 1 from 'int' to 'const std::vector<std::vector<bool> >&'
  575 |       vector(const vector& __x, const allocator_type& __a)
      |              ~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_vector.h:572:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >]'
  572 |       vector(vector&&) noexcept = default;
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:572:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/10/bits/stl_vector.h:553:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >]'
  553 |       vector(const vector& __x)
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:553:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/10/bits/stl_vector.h:522:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>::size_type, const value_type&, const allocator_type&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; std::vector<_Tp, _Alloc>::size_type = long unsigned int; std::vector<_Tp, _Alloc>::value_type = std::vector<bool>; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<std::vector<bool> >]'
  522 |       vector(size_type __n, const value_type& __value,
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:522:47: note:   no known conversion for argument 2 from 'std::vector<int>' to 'const value_type&' {aka 'const std::vector<bool>&'}
  522 |       vector(size_type __n, const value_type& __value,
      |                             ~~~~~~~~~~~~~~~~~~^~~~~~~
/usr/include/c++/10/bits/stl_vector.h:510:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>::size_type, const allocator_type&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; std::vector<_Tp, _Alloc>::size_type = long unsigned int; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<std::vector<bool> >]'
  510 |       vector(size_type __n, const allocator_type& __a = allocator_type())
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:510:51: note:   no known conversion for argument 2 from 'std::vector<int>' to 'const allocator_type&' {aka 'const std::allocator<std::vector<bool> >&'}
  510 |       vector(size_type __n, const allocator_type& __a = allocator_type())
      |                             ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:497:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const allocator_type&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<std::vector<bool> >]'
  497 |       vector(const allocator_type& __a) _GLIBCXX_NOEXCEPT
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:497:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/10/bits/stl_vector.h:487:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector() [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >]'
  487 |       vector() = default;
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:487:7: note:   candidate expects 0 arguments, 2 provided
flood.cpp: In function 'int main()':
flood.cpp:143:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  143 |             for(int e = 0; e < R_edge[u].size(); e++)
      |                            ~~^~~~~~~~~~~~~~~~~~