Submission #436682

#	Time	Username	Problem	Language	Result	Execution time	Memory
436682		ScarletS	Friend (IOI14_friend)	C++17	Compilation error	0 ms	0 KiB

friend

#include <bits/stdc++.h>
#define ll long long
#define sz(x) (int)(x).size()
using namespace std;

const int N = 1005;
int mt[N];
vector<int> e[N], v[2];
bool done[N], cmp[N];
 
void dfs(int c, int x)
{
    v[x].push_back(c);
    mt[c]=-1;
    cmp[c]=1;
    for (int i : e[c])
        if (!cmp[i])
            dfs(i,x^1);
}

bool try_kuhn(int c)
{
    if (done[c])
        return 0;
    done[c]=1;
    for (int i : e[c])
        if (mt[i]!=-1||try_kuhn(i))
        {
            mt[i]=c;
            return 1;
        }
    return 0;
}
 
int findSample(int n, int confidence[], int host[], int protocol[])
{
    for (int i=1;i<n;++i)
    {
        if (protocol[i]==0)
        {
            e[i].push_back(host[i]);
            e[host[i]].push_back(i);
        }
        else
        {
            for (int j : edges[host[i]])
            {
                e[i].push_back(j);
                e[j].push_back(i);
            }
        }
    }
    int tot=0, cur;
    for (int i=0;i<n;++i)
        if (!cmp[i])
        {
            v[0].clear();
            v[1].clear();
            dfs(i,0);
            for (int j : v[0])
            {
                done.reset();
                try_kuhn(j);
            }
            cur=0;
            for (int j : v[1])
                if (mt[j]!=1)
                    ++cur;
            tot+=-cur+v[0].size()+v[1].size();
        }
    return tot;
}
 
/**int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    int n;
    cin>>n;
    int c[n];
    for (int i=0;i<n;++i)
        cin>>c[i];
    int h[n];
    for (int i=1;i<n;++i)
        cin>>h[i];
    int p[n];
    for (int i=1;i<n;++i)
        cin>>p[i];
    cout<<findSample(n,c,h,p);
    return 0;
}**/

Compilation message (stderr)

friend.cpp: In function 'int findSample(int, int*, int*, int*)':
friend.cpp:46:26: error: 'edges' was not declared in this scope
   46 |             for (int j : edges[host[i]])
      |                          ^~~~~
friend.cpp:62:22: error: request for member 'reset' in 'done', which is of non-class type 'bool [1005]'
   62 |                 done.reset();
      |                      ^~~~~