Submission #447256

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
447256	2021-07-25 14:45:43	ak2006	Railway (BOI17_railway)	C++14	100 / 100	164 ms	34288 KiB

railway

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vb = vector<bool>;
using vvb = vector<vb>;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vc = vector<char>;
using vvc = vector<vc>;
using vs = vector<string>;
const ll mod = 1e9 + 7,inf = 1e18;
#define pb push_back
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
void setIO()
{
    fast;
}
int n = 1e5 + 5,m,k,TIMER;
vvi adj(n),anc(n,vi(21));
vi pref(n),in(n),out(n);
void dfs(int u,int p)
{
    in[u] = ++TIMER;
    anc[u][0] = p;
    for (int i = 1;i<=20;i++)anc[u][i] = anc[anc[u][i - 1]][i - 1];
    for (int v:adj[u]){
        if (v == p)continue;
        dfs(v,u);
 
 
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Compilation message (stderr)

railway.cpp: In function 'int main()':
railway.cpp:85:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |     for (int i = 0;i<edges.size();i++){
      |                    ~^~~~~~~~~~~~~

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