Submission #612495

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
612495	2022-07-29T16:03:43 Z	MohamedAliSaidane	Toy Train (IOI17_train)	C++14	Compilation error	0 ms	0 KB

train

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

    typedef long long ll;
    typedef double ld;
    typedef pair<int,int> pii;
    typedef pair<ll,ll> pll;

    typedef vector<int> vi;
    typedef vector<ll> vll;
    typedef vector<pii> vpi;
    typedef vector<pll> vpl;

    #define pb push_back
    #define popb pop_back
    #define all(x) (x).begin(),(x).end()

    #define ff first
    #define ss second

    const int nax = 5004;
    const int MOD = 1e9 + 7;



//std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v);
    int  n, m;
    vi adj[nax];
    int vis[nax];
    int A[nax], C[nax], self[nax];
    int dfs(int x, int dep = n)
    {
        vis[x] = 1;
        dep = C[x] ? n: dep;
        if(dep == 0)
            return A[x] ? 0 : 1;
        int rep = 0;
        for(auto e: adj[x])
        {
            if(vis[e])
            {
                if(A[x])
                    rep = 1;
            }
            else
            {
                if(A[e] == A[x])
                {
                    if(rep == 0 )
                        rep = dfs(e, dep - 1);
                }
                else
                {
                    if(rep == 0)
                        rep = 1 - dfs(e, dep - 1);
                }
            }
        }
        vis[x] = 0;
        return rep;
    }
    vi who_wins(vi a, vi r, vi u, vi v)
    {
        n = a.size();
        m = u.size();
        for(int i = 0 ; i < n; i++)
        {
            A[i] = a[i];
            C[i ] = r[i];
        }
        for(int i = 0 ; i  < m; i ++)
        {
            adj[u[i]].pb(v[i]);
            if(u[i] == v[i])
                self[i] = 1;
        }
        vi ans(n);
        for(int i = n - 1;i  >= 0; i--)
        {
            if(a[i])
            {
                if(C[i] && self[i])
                    ans[i] = 1;
                else
                {
                    for(auto e: adj[i])
                        ans = ans[i] | ans[e];
                }
            }
            else
            {
                if(!C[i] && self[i])
                    ans[i] = 0;
                else
                {
                    ans[i] = 1;
                    for(auto e: adj[i])
                        ans[i] &= ans[e];
                }
            }
        }
        return ans;

    }

/*
int main() {
	int n, m;
	assert(2 == scanf("%d %d", &n, &m));

	vector<int> a(n), r(n), u(m), v(m);

	for(int i = 0; i < n; i++)
		assert(1 == scanf("%d", &a[i]));

	for(int i = 0; i < n; i++)
		assert(1 == scanf("%d", &r[i]));

	for(int i = 0; i < m; i++)
		assert(2 == scanf("%d %d", &u[i], &v[i]));

	vector<int> res = who_wins(a, r, u, v);

	for(int i = 0; i < (int)res.size(); i++)
		printf(i ? " %d" : "%d", res[i]);
	printf("\n");

	return 0;
}
*/

Compilation message

train.cpp: In function 'vi who_wins(vi, vi, vi, vi)':
train.cpp:88:45: error: no match for 'operator=' (operand types are 'vi' {aka 'std::vector<int>'} and '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'})
   88 |                         ans = ans[i] | ans[e];
      |                                             ^
In file included from /usr/include/c++/10/vector:72,
                 from /usr/include/c++/10/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86,
                 from train.cpp:1:
/usr/include/c++/10/bits/vector.tcc:198:5: note: candidate: 'std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(const std::vector<_Tp, _Alloc>&) [with _Tp = int; _Alloc = std::allocator<int>]'
  198 |     vector<_Tp, _Alloc>::
      |     ^~~~~~~~~~~~~~~~~~~
/usr/include/c++/10/bits/vector.tcc:199:42: note:   no known conversion for argument 1 from '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} to 'const std::vector<int>&'
  199 |     operator=(const vector<_Tp, _Alloc>& __x)
      |               ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
In file included from /usr/include/c++/10/vector:67,
                 from /usr/include/c++/10/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86,
                 from train.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:709:7: note: candidate: 'std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(std::vector<_Tp, _Alloc>&&) [with _Tp = int; _Alloc = std::allocator<int>]'
  709 |       operator=(vector&& __x) noexcept(_Alloc_traits::_S_nothrow_move())
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:709:26: note:   no known conversion for argument 1 from '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} to 'std::vector<int>&&'
  709 |       operator=(vector&& __x) noexcept(_Alloc_traits::_S_nothrow_move())
      |                 ~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_vector.h:730:7: note: candidate: 'std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(std::initializer_list<_Tp>) [with _Tp = int; _Alloc = std::allocator<int>]'
  730 |       operator=(initializer_list<value_type> __l)
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:730:46: note:   no known conversion for argument 1 from '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} to 'std::initializer_list<int>'
  730 |       operator=(initializer_list<value_type> __l)
      |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~