Submission #135054

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
135054	2019-07-23 15:05:06	miguel	Railway (BOI17_railway)	C++14	100 / 100	171 ms	24180 KiB

railway

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#include<bits/stdc++.h>
using namespace std;
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define dbg(x) cout << #x << '=' << x << '\n';
#define ll long long
#define sz size()
#define x first
#define y second
#define pi pair <int, int>
#define pii pair <int, pi>
#define vi vector <int>
#define nmax 301
const ll mod = 998244353;
int n, m, k, timer, up[100001][18], tin[100001], tout[100001], cnt[100001];
vi g[100001];
pi ed[100001];
void dfs(int nod, int p){
    tin[nod]=timer++;
    up[nod][0]=p;
    for(int i=1; i<=17; i++) up[nod][i]=up[up[nod][i-1]][i-1];
    for(int i : g[nod]){
        if(i!=p) dfs(i, nod);
    }
    tout[nod]=timer++;
}
bool check(int anc, int x){
    if(tin[anc]<=tin[x] && tout[x]<=tout[anc]) return 1;
 
 
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Compilation message (stderr)

railway.cpp: In function 'int32_t main()':
railway.cpp:78:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=0; j<v.size(); j++){
                      ~^~~~~~~~~

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