Submission #282339

#	Time	Username	Problem	Language	Result	Execution time	Memory
282339		iliccmarko	Traffic (IOI10_traffic)	C++14	Compilation error	0 ms	0 KiB

traffic

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"

using namespace std;
ll p[1005];
ll s[1005];
ll d[1005];
int n;



long long dfs(int u, int pret, vector<vector<int> > g, long long &ans, int &ind, long long svi)
{
    long long br = 0;
    for(int i = 0;i<(int)g[u].size();i++)
    {
        int s = g[u][i];
        if(s==pret) continue;
        br+=dfs(s, u, g, ans, ind, svi);
    }

    if(br<ans)
    {
        ans = br;
        ind = u;
    }
    if(svi - br - p[u]<ans)
    {
        ans = svi - br - p[u];
        ind = u;
    }

    return br + p[u];
}

int LocateCenter(int n, ll p[], ll s[], ll d[])
{
    vector<vector<int> > g(1000);
    for(int i = 0;i<n-1;i++)
    {
        int a = s[i];
        int b = d[i];
        g[a].push_back(b);
        g[b].push_back(a);
    }
    long long svi = 0;
    for(int i = 0;i<n;i++)
    {
        svi+=p[i];
    }
    long long ans = LLONG_MAX;
    int ind;
    dfs(1, -1, g, ans, ind, svi);
    return ind;
}


int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin>>n;
    for(int i = 0;i<n;i++)
       { cin>>p[i]; }

    for(int i = 0;i<n-1;i++)
    {
        cin>>s[i]>>d[i];
    }

    cout<<LocateCenter(n, p, s, d);



    return 0;
}

Compilation message (stderr)

/tmp/ccz3zvFe.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccWv971b.o:traffic.cpp:(.text.startup+0x0): first defined here
/tmp/ccz3zvFe.o: In function `main':
grader.cpp:(.text.startup+0xad): undefined reference to `LocateCentre(int, int*, int*, int*)'
collect2: error: ld returned 1 exit status