Submission #739452

#	Time	Username	Problem	Language	Result	Execution time	Memory
739452		Ahmed57	Untitled (POI11_smi)	C++14	10 / 100	3076 ms	262144 KiB

Main

#include <bits/stdc++.h>

using namespace std;
vector<int> v;int in[100001],vis[100001];
vector<int> adj[100001];int cnt = 0;
map<pair<int,int>,int> mp;
void dfs(int i){
    vis[i] = 1;
    while(in[i]){
        if(mp[{i,adj[i][in[i]-1]}]==0){
        mp[{i,adj[i][in[i]-1]}] = 1;
        mp[{adj[i][in[i]-1],i}] = 1;
        dfs(adj[i][--in[i]]);
        }else in[i]--;
    }
    v.push_back(i);
}
int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    int n,m;
    cin>>n>>m;
    for(int i = 0;i<m;i++){
        int a,b,c,d;
        cin>>a>>b>>c>>d;
        if(c==d)continue;
        adj[a].push_back(b);
        adj[b].push_back(a);
        in[a]++;in[b]++;
    }
    for(int i = 1;i<=n;i++){
        if(in[i]%2){
            cout<<"NIE\n";
            return 0;
        }
    }
    vector<vector<int>> all;
    int de[n+1] = {0};
    for(int i = 1;i<=n;i++){
        if(!vis[i]){
            v.clear();
            dfs(i);
            reverse(v.begin(),v.end());
            vector<int> tmp;
            for(auto j:v){
                tmp.push_back(j);
                if(de[j]==i){
                    all.push_back(tmp);
                    tmp.clear();tmp.push_back(j);
                }
                de[j]=i;
            }
        }
    }
    cout<<all.size()<<"\n";
    for(auto i:all){cout<<i.size()-1<<" ";for(auto j:i)cout<<j<<" ";cout<<endl;}
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10