Submission #992212

#	Time	Username	Problem	Language	Result	Execution time	Memory
992212		vivkostov	Bitaro’s Party (JOI18_bitaro)	C++14	Compilation error	0 ms	0 KiB

bitaro

#include<bits/stdc++.h>
#define endl "\n"
using namespace std;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
int n,m,qu,a,b,x,y,used[200005];
vector<int>v[200005],c;
void bfs(int beg)
{
    used[beg]=1;
    int w,nb;
    queue<int>q;
    q.push(beg);
    //cout<<beg<<endl;
    while(!q.empty())
    {
        w=q.front();
        q.pop();
        //cout<<w<<" "<<beg<<endl;
        for(int i=0; i<(int)(v[w].size()); i++)
        {
            nb=v[w][i];
            q.push(nb);
            used[nb]=max(used[nb,used[w]+1);
        }
    }
}
void read()
{
    cin>>n>>m>>qu;
    for(int i=1; i<=m; i++)
    {
        cin>>a>>b;
        v[b].push_back(a);
    }
    cin>>x>>y;
    for(int j=1; j<=y; j++)
    {
        int h;
        cin>>h;
        c.push_back(h);
    }
    bfs(x);
    int ma=0,num=0;
    for(int j=1; j<=n; j++)
    {
        //cout<<used[j]<<" "<<j<<endl;
        if(num==(int)(c.size())||j!=c[num])ma=max(ma,used[j]-1);
        else num++;
    }
    cout<<ma<<endl;
}
int main()
{
    speed();
    read();
    return 0;
}

Compilation message (stderr)

bitaro.cpp: In function 'void bfs(int)':
bitaro.cpp:28:31: warning: left operand of comma operator has no effect [-Wunused-value]
   28 |             used[nb]=max(used[nb,used[w]+1);
      |                               ^~
bitaro.cpp:28:43: error: expected ']' before ')' token
   28 |             used[nb]=max(used[nb,used[w]+1);
      |                                           ^
      |                                           ]
bitaro.cpp:28:43: error: no matching function for call to 'max(int&)'
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from bitaro.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:
bitaro.cpp:28:43: note:   candidate expects 2 arguments, 1 provided
   28 |             used[nb]=max(used[nb,used[w]+1);
      |                                           ^
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from bitaro.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:
bitaro.cpp:28:43: note:   candidate expects 3 arguments, 1 provided
   28 |             used[nb]=max(used[nb,used[w]+1);
      |                                           ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from bitaro.cpp:1:
/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:
bitaro.cpp:28:43: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   28 |             used[nb]=max(used[nb,used[w]+1);
      |                                           ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from bitaro.cpp:1:
/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:
bitaro.cpp:28:43: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   28 |             used[nb]=max(used[nb,used[w]+1);
      |                                           ^