Submission #403157

#	Time	Username	Problem	Language	Result	Execution time	Memory
403157		Nafeeszx	Traffic (IOI10_traffic)	C++14	Compilation error	0 ms	0 KiB

traffic

#include "traffic.h"
#include <bits/stdc++.h>
using namespace std;

const int MX = 1e6;

vector<int> adj[MX];
vector<int> nodes(MX);

vector<int> children(MX);
vector<int> people(MX, 0);
int citizen = 0;

void dfs(int u, int p){
    trav(v, adj[u]){
        if(v != p){
            dfs(v, u);
            children[u] += children[v];
            people[u] = max(people[u], children[v]);
        }
    }
    people[u] = max(people[u], citizen - children[u] - nodes[u]);
    children[u] += nodes[u];
}

int LocateCentre(int n, int p[], int s[], int d[]){

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

    for(int i = 0; i < n - 1; ++i){
        adj[s[i]].push_back(d[i]);
        adj[d[i]].push_back(s[i]);
    }

    int minpeople = 2e9 + 1, res = 0;
    for(int i = 0; i < n; ++i){
        if(people[i] < minpeople){
            res = i;
            minpeople = people[i]; 
        }
    }

    return res;

}

Compilation message (stderr)

traffic.cpp: In function 'void dfs(int, int)':
traffic.cpp:15:10: error: 'v' was not declared in this scope
   15 |     trav(v, adj[u]){
      |          ^
traffic.cpp:15:5: error: 'trav' was not declared in this scope
   15 |     trav(v, adj[u]){
      |     ^~~~