제출 #1058672

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1058672		kachim2	Make them Meet (EGOI24_makethemmeet)	C++17	0 / 100	490 ms	1048576 KiB

Main

#include<bits/stdc++.h>
using namespace std;
vector<vector<int>> graph;
int n, m;

vector<int> c;
vector<bool> visited;
void dfs(int v, int p, int d){
    if(d%2) c[v] = p;
    else c[v] = v;
    for(auto i : graph[v]){
        if(!visited[i]) dfs(i, v, d+1);
    }
}
int main(){
    cin >> n >> m;
    graph.resize(n);
    c.resize(n);
    visited.resize(n);
    for(int i = 0; i < m; i++){
        int x, y;
        cin >> x >> y;
        graph[x].push_back(y);
        graph[y].push_back(x);
    }
    int root = 0;
    
    for(int i = 0; i < n; i++) if(graph[i].size() == 1) root = i;
    cout << "600\n";
    for(int i = 0; i < 600; i++){
        fill(visited.begin(), visited.end(), 0);
        dfs(root, -1, i%2);
        c[root] = root;
        c[graph[root][0]]=root;
        for(auto i : c){
            cout << i << ' ';
        }
        cout << '\n';
    }
    
}

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