Submission #171276

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
171276	2019-12-28 07:09:55	ruler	Railway (BOI17_railway)	C++14	100 / 100	347 ms	33940 KiB

railway

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// IOI 2021
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define ends ' '
#define die(x) return cout << x << endl, 0
#define all(v) v.begin(), v.end()
#define sz(x) (int)(x.size())
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) { cerr << ends << H; debug_out(T...); }
#define debug(...) cerr << "{" << #__VA_ARGS__ << "}:", debug_out(__VA_ARGS__)
typedef long long ll;
typedef pair<int, int> pii;
const ll INF = 1e9;
const ll MOD = 1e9 + 7;
////////////////////////////////////////////////////////////////////
const int N = 1e5 + 5;
int k, SZ[N], S[N], C[N];
vector<int> M[N];
vector<pii> G[N];
vector<int> E;
int DFSZ(int v, int p = 0) {
  SZ[v] = 1;
  for (pii e : G[v]) if (e.second != p) SZ[v] += DFSZ(e.first, e.second);
 
 
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• Subtask 1: 8 / 8
• Subtask 2: 15 / 15
• Subtask 3: 7 / 7
• Subtask 4: 29 / 29
• Subtask 5: 16 / 16
• Subtask 6: 25 / 25