Submission #411420

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
411420	2021-05-25T09:32:08 Z	alextodoran	Traffic (IOI10_traffic)	C++17	Compilation error	0 ms	0 KB

traffic

/**
 ____ ____ ____ ____ ____
||a |||t |||o |||d |||o ||
||__|||__|||__|||__|||__||
|/__\|/__\|/__\|/__\|/__\|

**/

#include <bits/stdc++.h>
#include "traffic.h"

using namespace std;

typedef long long ll;

const int N_MAX = 100000;

int n;

int p[N_MAX];

int subSize[N_MAX];

vector <int> edges[N_MAX];
int parent[N_MAX];

void dfs (int u)
{
    subSize[u] = p[u];
    for(int v : edges[u])
        if(v != parent[u])
        {
            parent[v] = u;
            dfs(v);
            subSize[u] += subSize[v];
        }
}

int LocateCenter (int N, int* P, int* X, int* Y)
{
    n = N;
    for(int u = 0; u < n; u++)
        p[u] = P[u];
    for(int i = 0; i < n - 1; i++)
    {
        edges[X[i]].push_back(Y[i]);
        edges[Y[i]].push_back(X[i]);
    }
    parent[0] = -1;
    dfs(0);
    int best = INT_MAX;
    int answer = -1;
    for(int u = 0; u < n; u++)
    {
        int maxFlow = subSize[0] - subSize[u];
        for(int v : edges[u])
            if(v != parent[u])
                maxFlow = max(maxFlow, subSize[v]);
        if(maxFlow < best)
        {
            best = maxFlow;
            answer = u;
        }
    }
    return answer;
}

Compilation message

/usr/bin/ld: /tmp/ccYKK6Ob.o: in function `main':
grader.cpp:(.text.startup+0xe1): undefined reference to `LocateCentre(int, int*, int*, int*)'
collect2: error: ld returned 1 exit status