Submission #1038574

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1038574	2024-07-30 02:19:35	krakenn	Railway (BOI17_railway)	C++17	100 / 100	72 ms	25288 KiB

railway

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#include "bits/stdc++.h"
using namespace std;
#define ll long long
#define ld long double
#define ii pair<int,int>
#define pll pair<ll,ll>
#define lll tuple<ll,ll,ll>
#define iii tuple<int,int,int>
#define forn(i,a,b) for (int i = a; i <= b; i++)
#define sz(x) int((x).size())
#define all(x) begin(x), end(x)
#define dbg(v) \
cout << "Line(" << __LINE__ << ") -> " << #v << " = " << (v) << endl;
#define m1(x) template<class T, class... U> void x(T&& a, U&&... b)
#define m2(x) (int[]){(x forward<U>(b),0)...}
m1(out) { cout << forward<T>(a);  m2(cout << " " <<); cout << "\n"; }
m1(in) { cin >> forward<T>(a); m2(cin >>); }
// nmax = 1e5
int tin[100004], tout[100004], timer = 0, p_edge[100004];
vector<ii> adj[100004];
void dfs2(int node = 1, int parent = 0) {
    tin[node] = ++timer;
    for (pair<int, int> &i : adj[node])
        if (i.first != parent) {
            p_edge[i.first] = i.second;
 
 
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Compilation message (stderr)

railway.cpp: In function 'int main()':
railway.cpp:164:15: warning: unused variable 'trg' [-Wunused-variable]
  164 |     const int trg = 2*k;
      |               ^~~

• Subtask 1: 8 / 8
• Subtask 2: 15 / 15
• Subtask 3: 7 / 7
• Subtask 4: 29 / 29
• Subtask 5: 16 / 16
• Subtask 6: 25 / 25