제출 #546931

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
546931	2022-04-09 00:55:12	jeroenodb	Praktični (COCI18_prakticni)	C++17	130 / 130	161 ms	18152 KiB

parkticni

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#include "bits/stdc++.h"
using namespace std;
#define all(x) begin(x),end(x)
template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) { string sep; for (const T &x : v) os << sep << x, sep = " "; return os; }
#define debug(a) cerr << "(" << #a << ": " << a << ")\n";
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> pi;
const int mxN = 1e5+1, oo = 1e9;
vi adj[mxN];
vi base;
int pref[mxN];
bitset<mxN> vis,mark;
vector<array<int,3>> es;
vector<pi> bad;
void dfs(int at, int from) {
    vis[at]=true;
    mark[at]=true;
    for(auto ei : adj[at]) {
        auto& e = es[ei];
        int to = e[0]^e[1]^at, w= e[2];
        if(to==from) continue;
        if(!vis[to]) {
            pref[to]=pref[at]^w;
            dfs(to,at);
        } else if(mark[to])  {
            // back edge
 
 
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