Submission #1224370

#	Time	Username	Problem	Language	Result	Execution time	Memory
1224370		LIA	Traffic (IOI10_traffic)	C++17	0 / 100	0 ms	320 KiB

traffic

#include "traffic.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef tuple <ll,ll,ll> plll;
typedef vector <plll> vplll;
typedef pair <ll,ll> pll;
typedef vector <ll> vll;
typedef vector <pll> vpll;
typedef vector <vector <pll>> vvpll;
typedef vector <vector <ll>> vvll;
typedef vector <bool> vb;
typedef vector <vector <bool>> vvb;
#define loop(i, s, e) for (ll i = (s); i < (e); ++i)
#define loopr(i, e, s) for (ll i = (e)-1; i >= (s); --i)
#define all(a) a.begin(), a.end()
const ll inf = 1e9 + 7;
vvll g;
vll ans, sz;
void dfs(ll node, ll par) {
    for (auto it : g[node]) {
        if (it!= par) {
            dfs(it,node);
            sz[node]+=sz[it];
            ans[it] = max(sz[it], ans[it]);
        }
    }
    ans[node] = max(ans[node], sz[par]);
}


int LocateCentre(int n, int pp[], int S[], int D[]) {
   g.resize(n),  ans.resize(n), sz.resize(n);
    loop(i,0,n-1) {
        g[S[i]].push_back(D[i]);
        g[D[i]].push_back(S[i]);
    }
    loop(i,0,n) sz[i] = pp[i];
    dfs(0,-1);
    ll ansi, mini = inf;
    loop(i,0,n) if (ans[i] < mini) {
        mini = ans[i];
        ansi = i;
    }
    return ansi;
}

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