Submission #1172401

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1172401	2025-03-23 12:29:04	DanielPr8	Railway (BOI17_railway)	C++20	0 / 100	36 ms	21172 KiB

railway

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector<ll>;
using vvl = vector<vll>;
using pll = pair<ll,ll>;
using vpl = vector<pll>;
using vvp = vector<vpl>;
#define f first
#define s second
#define pb push_back
#define all(v) v.begin(),v.end()
vll ed, sz;
vpl ord;
vvp g;
void dfs(ll cr, ll pr){
    ord.pb({cr, -1});
    for(pll i:g[cr]){
        if(i.f!=pr){
            ord.back() = {cr, i.s};
            dfs(i.f,cr);
        }
    }
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(NULL);
    ll n, m, k, a ,b, s;
    cin >> n >> m >> k;
    g = vvp(n);
    for(ll i = 0; i < n-1; ++i){
 
 
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