Submission #1262441

#	Time	Username	Problem	Language	Result	Execution time	Memory
1262441		LeonidCuk	Senior Postmen (BOI14_postmen)	C++20	0 / 100	0 ms	328 KiB

postmen

#include <bits/stdc++.h>
using namespace std;
vector<vector<int>>g;
vector<pair<int,int>>edges;
vector<bool>vis;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n,m,a,b;
    cin>>n>>m;
    vis.resize(m);
    g.resize(n+1);
    for(int i=0;i<m;i++)
    {
        cin>>a>>b;
        g[a].push_back(i);
        g[b].push_back(i);
        edges.push_back({a,b});
    }
    vector<int>res;
    int sum=0;
    a=1;
    bool check=true;
    for(int j=1;j<=n;j++)
    {
        a=j;
        bool check=false;
        for(auto i:g[a])if(!vis[i])check=true;
        if(!check)continue;
        res.push_back(a);
        while(res.size()!=0)
        {
            check=true;
            a=res.back();
            for(auto i:g[a])
            {
            if(!vis[i])
            {
                int b=edges[i].first;
                if(b==a)b=edges[i].second;
                res.push_back(b);
                vis[i]=true;
                check=false;
                a=b;
                sum++;
                break;
            }
            }
            if(check)
            {
                cout<<a<<" ";
                res.pop_back();
                while(res.back()!=a)
                {
                    cout<<res.back()<<" ";
                    res.pop_back();
                }
                cout<<endl;
                res.pop_back();
            }
        }
    }
}

• Subtask 1: 0 / 38
• Subtask 2: 0 / 17
• Subtask 3: 0 / 45