oj.uz

Submission #31541

# Submission time Handle Problem Language Result Execution time Memory
31541 2017-08-29T07:58:56 Z Kanvie Senior Postmen (BOI14_postmen) C++14
38 / 100
 500 ms 16812 KB 
#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
typedef pair<int,int> pii;
int n,m,vv,u,cnt;
vector<pair<int,int> >v[500001];
bool visit[500001],fi,edge[500001];
vector<int>ans;
stack<int>s;
bool chk(int x)
{
    if(!edge[x]){edge[x]=true;return true;}
    else return false;
}
int x,y;
int main()
{
    ios_base::sync_with_stdio(false);
    cin>>n>>m;
    for(int i=1;i<=m;++i)
    {
        cin>>x>>y;
        ++cnt;
        v[x].push_back({y,cnt});
        v[y].push_back({x,cnt});
    }
    s.push(1);
    while(!s.empty())
    {
        u=s.top();
        for(int i=0;i<v[u].size();++i)
        {
            vv=v[u][i].fi;
            if(chk(v[u][i].se))break;
            if(i==v[u].size()-1)vv=-1;
        }
        if(vv!=-1)s.push(vv);
        else {s.pop();ans.push_back(u);}
    }
    fi=false;
    for(int i=0;i<ans.size();++i)
    {
        if(!visit[ans[i]])
        {
            s.push(ans[i]);
            visit[ans[i]]=true;
        }
        else
        {
            if(fi)cout<<endl;
            else fi=true;
            while(1)
            {
                if(s.top()!=ans[i])cout<<s.top()<<' ';
                else cout<<s.top();
                if(s.top()!=ans[i]){visit[s.top()]=false;s.pop();}
                else break;
            }
        }
    }
}

Compilation message

postmen.cpp: In function 'int main()':
postmen.cpp:32:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0;i<v[u].size();++i)
                     ~^~~~~~~~~~~~
postmen.cpp:36:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if(i==v[u].size()-1)vv=-1;
                ~^~~~~~~~~~~~~~~
postmen.cpp:42:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<ans.size();++i)
                 ~^~~~~~~~~~~

Subtask #1
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12032 KB Output is correct
2 Correct 14 ms 12032 KB Output is correct
3 Correct 13 ms 12160 KB Output is correct
4 Correct 22 ms 12264 KB Output is correct
5 Correct 15 ms 12160 KB Output is correct
6 Correct 18 ms 12288 KB Output is correct
7 Correct 28 ms 12776 KB Output is correct
8 Correct 14 ms 12160 KB Output is correct
9 Correct 167 ms 15200 KB Output is correct
10 Correct 15 ms 12160 KB Output is correct
11 Correct 18 ms 12288 KB Output is correct
12 Correct 99 ms 15556 KB Output is correct

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 12136 KB Output is correct
2 Correct 13 ms 12160 KB Output is correct
3 Correct 14 ms 12192 KB Output is correct
4 Correct 29 ms 12288 KB Output is correct
5 Correct 12 ms 12160 KB Output is correct
6 Correct 18 ms 12288 KB Output is correct
7 Correct 23 ms 12800 KB Output is correct
8 Correct 12 ms 12264 KB Output is correct
9 Correct 174 ms 15260 KB Output is correct
10 Correct 18 ms 12160 KB Output is correct
11 Correct 13 ms 12160 KB Output is correct
12 Correct 87 ms 15516 KB Output is correct
13 Correct 120 ms 16812 KB Output is correct
14 Correct 131 ms 16420 KB Output is correct
15 Execution timed out 1087 ms 15440 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #3
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12032 KB Output is correct
2 Correct 12 ms 12032 KB Output is correct
3 Correct 14 ms 12208 KB Output is correct
4 Correct 17 ms 12288 KB Output is correct
5 Correct 14 ms 12136 KB Output is correct
6 Correct 16 ms 12288 KB Output is correct
7 Correct 26 ms 12776 KB Output is correct
8 Correct 14 ms 12160 KB Output is correct
9 Correct 163 ms 15240 KB Output is correct
10 Correct 17 ms 12288 KB Output is correct
11 Correct 15 ms 12288 KB Output is correct
12 Correct 98 ms 15496 KB Output is correct
13 Correct 75 ms 16788 KB Output is correct
14 Correct 144 ms 16424 KB Output is correct
15 Execution timed out 1091 ms 15260 KB Time limit exceeded
16 Halted 0 ms 0 KB -