Submission #725699

#	Time	Username	Problem	Language	Result	Execution time	Memory
725699		sofija6	Race (IOI11_race)	C++14	Compilation error	0 ms	0 KiB

race

#include <bits/stdc++.h>
#include "race.h"
#define MAXN 200010
#define MAXK 1000010
using namespace std;
vector<pair<int,int> > G[MAXN];
bool check[MAXN];
int subtree[MAXN],k,res=INT_MAX,ans[MAXK];
void DFS_Subtree(int i,int p)
{
    subtree[i]=1;
    for (auto next : G[i])
    {
        if (next.first!=p && !check[next.first])
        {
            DFS_Subtree(next.first,i);
            subtree[i]+=subtree[next.first];
        }
    }
}
int DFS_Centroid(int i,int p,int root)
{
    for (auto next : G[i])
    {
        if (next.first!=p && !check[next.first] && subtree[next.first]>subtree[root]/2)
            return DFS_Centroid(next.first,i,root);
    }
    return i;
}
void DFS_Paths(int i,int p,int d,int cnt)
{
    if (d>k)
        return;
    if (ans[k-d])
        res=min(res,ans[k-d]+cnt);
    for (auto next : G[i])
    {
        if (next.first!=p)
            DFS_Paths(next.first,i,d+next.second,cnt+1);
    }
}
void DFS_Fill(int i,int p,int d,int cnt)
{
    if (d>k)
        return;
    ans[d]=(!ans[d])?cnt : min(ans[d],cnt);
    for (auto next : G[i])
    {
        if (next.first!=p)
            DFS_Fill(next.first,i,d+next.second,cnt+1);
    }
}
void Solve(int i)
{
    DFS_Subtree(i,i);
    int c=DFS_Centroid(i,i,i);
    check[c]=true;
    for (auto next : G[c])
    {
        DFS_Paths(next.first,c,next.second,1);
        DFS_Fill(next.first,c,next.second,1);
    }
    for (auto next : G[c])
    {
        if (!check[next.first])
            Solve(next.first);
    }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccsdiyV3.o: in function `main':
grader.cpp:(.text.startup+0x28): undefined reference to `best_path(int, int, int (*) [2], int*)'
collect2: error: ld returned 1 exit status