Submission #491575

#	Time	Username	Problem	Language	Result	Execution time	Memory
491575		vendx_greyback	Traffic (IOI10_traffic)	C++14	0 / 100	14 ms	23820 KiB

traffic

#include <bits/stdc++.h>
using namespace std;
#define all(x) (x).begin(),(x).end()

typedef pair<int,int> ppi;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;

const int mxn = 1e6;
vi adj[mxn];
int sz[mxn];
int mx[mxn];

void dfs(int u, int p){
    
    for(auto v: adj[u]){
        
        if(v == p)
            continue;
            
        dfs(v, u);
        sz[u] += sz[v];
        mx[u] = max(mx[u], sz[v]);
        
    }
    
}

int LocateCentre(int n, int p[], int s[], int d[]){
    
    for(int i = 0; i < n-1; i++){
        adj[s[i]].push_back(d[i]);
        adj[d[i]].push_back(s[i]);
    }
    
    int total = 0;
    for(int i = 0; i < n; i++){
        sz[i] = p[i];
        total += p[i];
    }
        
    dfs(0, -1);
    
    int wt = mxn;
    int res = -1;
    
    for(int i = 0; i < n; i++){
        
        int temp = max(mx[i], total - sz[i]);
        
        if(temp < wt){
            wt = temp;
            res = i;
        }
        
    }
    
    return res;
    
}

• Subtask 1: 0 / 25
• Subtask 2: 0 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25