oj.uz

Submission #952858

# Submission time Handle Problem Language Result Execution time Memory
952858 2024-03-25T03:18:16 Z sondos225 Relay Marathon (NOI20_relaymarathon) C++17
17 / 100
 6000 ms 217456 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
template<typename T>using ordered_set = tree<T,null_type,less_equal<T>,rb_tree_tag,tree_order_statistics_node_update>;//find_by_order(ind);
//order_of_key()
#define int long long
#define fast ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL);
#define pb push_back
#define yes "YES"
#define no "NO"
#define bigg INT_MAX
#define debug(x) cout<<(#x)<<" = " <<x<<endl;
#define all(x) x.begin(),x.end()
#define sz size()
#define nn '\n'
#define mms(x,y) memset(x,y,sizeof(x))
#define forr(i,j,n) for (int i=j; i<n; i++)
#define forn(i,j,n) for (int i=j; i>n; i--)
#define fi first
#define se second
#define la "LA"
#define cinn(x,y) for(int i=0; i<y; i++) cin>>x[i];
#define pii pair<int,int>
int par[100005]={ };
int fin(int x)
{
    if (x==par[x]) return x;
    return par[x]=fin(x);
}
signed main()
{
//    #ifndef LOCAL
//    freopen("lifeguards.in","r",stdin);
//    freopen("lifeguards.out","w", stdout);
//    #endif
    fast
    int n,m,k;
    cin>>n >>m >>k;
//    int dis[n+1][n+1];
//    forr(i,1,n+1)
//    {
//        forr(j,1,n+1)
//        {
//            if (i==j) dis[i][j]=0;
//            else dis[i][j]=bigg;
//        }
//    }
vector<pii> a[n+1];
    forr(i,0,m)
    {
        int x,y,z;
        cin>>x >>y >>z;
        a[x].pb({y,z});
        a[y].pb({x,z});
//        dis[x][y]=z;
//        dis[y][x]=z;
    }
    int s[k];
    priority_queue<array<int,3>> q;
    bool b[n+1]= { };

  //  int last[n+1]={ };
    forr(i,0,k)
    {
        cin>>s[i];
        //if (s[i]==1 || s[i]==2) continue;
        q.push({0,s[i],s[i]});
        b[s[i]]=1;
        par[s[i]]=s[i];
       // last[s[i]]=s[i];
    }
    set <pii>vis;
    int ans1=0;
    int a1=0, a2=0;
    while(!q.empty())
    {
        int c=q.top()[0], x=q.top()[1], last=q.top()[2];
        q.pop();
        if (vis.find({x,fin(last)})!=vis.end()) continue;
        par[x]=fin(last);
      //  cout<<c<<' '<<x<<endl;
        if (b[x] && c!=0)
        {
        //    cout<<x<<' '<<c<<endl;
            ans1=-c;
            a1=x;
            a2=par[x];
            break;
        }
       // if (!b[x])
       vis.insert({x,par[x]});
//       cout<<"PUT"<<x<<' '<<last<<endl;
        for(auto y:a[x])
        {
//            cout"DWAR"<<y.fi<<' '<<par[x]<<endl;
            if (vis.find({y.fi,par[x]})==vis.end() && par[x]!=y.fi)
            {
                int o=abs(c);
                o+=y.se;
                q.push({-o,y.fi,par[x]});

           //     cout<<yes<<y.fi<<' '<<y.se<<' '<<last<<endl;
            }
        }
    }
    /////
    ///new1
    while(!q.empty()) q.pop();
   // q.clear();
    vis.clear();
    mms(par,0);
    forr(i,0,k)
    {
        //cin>>s[i];
        if (s[i]==a1 || s[i]==a2) continue;
        q.push({0,s[i],s[i]});
      //  b[s[i]]=1;
        par[s[i]]=s[i];
       // last[s[i]]=s[i];
    }
    ///////////////
    while(!q.empty())
    {
        int c=q.top()[0], x=q.top()[1], last=q.top()[2];
        q.pop();
        if (vis.find({x,fin(last)})!=vis.end()) continue;
        par[x]=fin(last);
      //  cout<<c<<' '<<x<<endl;
        if (b[x] && c!=0)
        {
        //    cout<<x<<' '<<c<<endl;
            ans1+=(-c);
           // a1=x;
           // a2=par[x];
            break;
        }
       // if (!b[x])
       vis.insert({x,par[x]});
//       cout<<"PUT"<<x<<' '<<last<<endl;
        for(auto y:a[x])
        {
//            cout"DWAR"<<y.fi<<' '<<par[x]<<endl;
            if (vis.find({y.fi,par[x]})==vis.end() && par[x]!=y.fi && y.fi!=a1 && y.fi!=a2)
            {
                int o=abs(c);
                o+=y.se;
                q.push({-o,y.fi,par[x]});

           //     cout<<yes<<y.fi<<' '<<y.se<<' '<<last<<endl;
            }
        }
    }
    /////////////////
    ///ans1 done
    /////
    ///new2
    while(!q.empty()) q.pop();
   // q.clear();
    vis.clear();
    mms(par,0);
    forr(i,0,k)
    {
        //cin>>s[i];
        if (s[i]==a1) continue;
        q.push({0,s[i],s[i]});
      //  b[s[i]]=1;
        par[s[i]]=s[i];
       // last[s[i]]=s[i];
    }
    ///////////////
    int ans2=0;
    int b1=0, b2=0;
    while(!q.empty())
    {
        int c=q.top()[0], x=q.top()[1], last=q.top()[2];
        q.pop();
        if (vis.find({x,fin(last)})!=vis.end()) continue;
        par[x]=fin(last);
      //  cout<<c<<' '<<x<<endl;
        if (b[x] && c!=0)
        {
        //    cout<<x<<' '<<c<<endl;
            ans2=(-c);
            b1=x;
            b2=par[x];
            break;
        }
       // if (!b[x])
       vis.insert({x,par[x]});
//       cout<<"PUT"<<x<<' '<<last<<endl;
        for(auto y:a[x])
        {
//            cout"DWAR"<<y.fi<<' '<<par[x]<<endl;
            if (vis.find({y.fi,par[x]})==vis.end() && par[x]!=y.fi && y.fi!=a1)
            {
                int o=abs(c);
                o+=y.se;
                q.push({-o,y.fi,par[x]});

           //     cout<<yes<<y.fi<<' '<<y.se<<' '<<last<<endl;
            }
        }
    }
    /////////////////
    //new22
    while(!q.empty()) q.pop();
   // q.clear();
    vis.clear();
    mms(par,0);
    forr(i,0,k)
    {
        //cin>>s[i];
        if (s[i]==a1) continue;
        q.push({0,s[i],s[i]});
      //  b[s[i]]=1;
        par[s[i]]=s[i];
       // last[s[i]]=s[i];
    }
    ///////////////
   // int ans2=0;
    //int b1=0, b2=0;
    while(!q.empty()) q.pop();
   // q.clear();
    vis.clear();
    mms(par,0);
    forr(i,0,k)
    {
        //cin>>s[i];
        if (s[i]==b1 || s[i]==b2) continue;
        q.push({0,s[i],s[i]});
      //  b[s[i]]=1;
        par[s[i]]=s[i];
       // last[s[i]]=s[i];
    }
    while(!q.empty())
    {
        int c=q.top()[0], x=q.top()[1], last=q.top()[2];
        q.pop();
        if (vis.find({x,fin(last)})!=vis.end()) continue;
        par[x]=fin(last);
      //  cout<<c<<' '<<x<<endl;
        if (b[x] && c!=0)
        {
        //    cout<<x<<' '<<c<<endl;
            ans2+=(-c);
          //  b1=x;
           // b2=par[x];
            break;
        }
       // if (!b[x])
       vis.insert({x,par[x]});
//       cout<<"PUT"<<x<<' '<<last<<endl;
        for(auto y:a[x])
        {
//            cout"DWAR"<<y.fi<<' '<<par[x]<<endl;
            if (vis.find({y.fi,par[x]})==vis.end() && par[x]!=y.fi && y.fi!=b1 && y.fi!=b2)
            {
                int o=abs(c);
                o+=y.se;
                q.push({-o,y.fi,par[x]});

           //     cout<<yes<<y.fi<<' '<<y.se<<' '<<last<<endl;
            }
        }
    }
    ///ans2 done
    cout<<min(ans1,ans2);
//    vector<pii> top3[n+1];
//    forr(q,1,n+1)
//    {
//        //vector<pii> cur;
//        forr(i,1,n+1)
//        {
//
//            forr(j,1,n+1)
//            {
//                if (i==j) continue;
//                dis[i][j]=min(dis[i][j],dis[i][q]+dis[q][j]);
//            }
//            //cout<<la<<i<<' '<<j<<' '<<dis[i][j]<<endl;
//                    }
////if (b[i] && b[j]) cur.pb({dis[i][j],j});
////        sort(all(cur));
////        if(cur.sz>0) top3[i].pb(cur[0]);
////        if(cur.sz>1) top3[i].pb(cur[1]);
////        if(cur.sz>2) top3[i].pb(cur[2]);
//    }
//     forr(i,1,n+1)
//    {
//        vector<pii> cur;
//        forr(j,1,n+1)
//        {
//            if (i==j) continue;
//            if (b[i] && b[j]) cur.pb({dis[i][j],j});//cout<<la<<i<<' '<<j<<' '<<dis[i][j]<<endl;
//        }
//        sort(all(cur));
//        if(cur.sz>0) top3[i].pb(cur[0]);
//        if(cur.sz>1) top3[i].pb(cur[1]);
//        if(cur.sz>2) top3[i].pb(cur[2]);
//    }
//    int ans=bigg;
//    forr(i,0,k)
//    {
//        int x=s[i];
//        if (top3[x].sz==0) continue;
//        forr(j,0,k)
//        {
//            if (i==j) continue;
//            int y=s[j];
//            int cur=top3[x][0].fi;
//            int nope=top3[x][0].se;
//            if (y==nope) continue;
//            if (top3[y].sz==0) continue;
//            if (top3[y][0].se!=nope && top3[y][0].se!=x) cur+=top3[y][0].fi;
//            else if (top3[y].sz==1) continue;
//            else if (top3[y][1].se!=nope && top3[y][1].se!=x) cur+=top3[y][1].fi;
//            else if (top3[y].sz==2) continue;
//            else if (top3[y][2].se!=nope && top3[y][2].se!=x) cur+=top3[y][2].fi;
//            else if (top3[y].sz==3) continue;
//            else cur+=top3[y][3].fi;
//          //  cout<<x<<' '<<y<<' '<<cur<<endl;
//            ans=min(ans,cur);
//        }
//    }
//    if (ans==bigg) ans/=0;
//    cout<<ans;
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1112 KB Output is correct
2 Correct 2 ms 1372 KB Output is correct
3 Correct 1 ms 1236 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Correct 1 ms 1116 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1368 KB Output is correct
8 Correct 1 ms 1372 KB Output is correct
9 Correct 1 ms 1116 KB Output is correct
10 Correct 1 ms 1116 KB Output is correct
11 Correct 1 ms 1116 KB Output is correct
12 Correct 1 ms 1116 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 1116 KB Output is correct
15 Correct 2 ms 1372 KB Output is correct
16 Correct 1 ms 1116 KB Output is correct
17 Correct 1 ms 1368 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 2 ms 1416 KB Output is correct
20 Correct 1 ms 1116 KB Output is correct
21 Correct 2 ms 1372 KB Output is correct
22 Correct 1 ms 1116 KB Output is correct
23 Correct 1 ms 1116 KB Output is correct
24 Correct 1 ms 1116 KB Output is correct
25 Correct 1 ms 1116 KB Output is correct
26 Correct 1 ms 1112 KB Output is correct
27 Correct 1 ms 1116 KB Output is correct
28 Correct 2 ms 1372 KB Output is correct
29 Correct 1 ms 1372 KB Output is correct
30 Correct 2 ms 1372 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1112 KB Output is correct
2 Correct 2 ms 1372 KB Output is correct
3 Correct 1 ms 1236 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Correct 1 ms 1116 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1368 KB Output is correct
8 Correct 1 ms 1372 KB Output is correct
9 Correct 1 ms 1116 KB Output is correct
10 Correct 1 ms 1116 KB Output is correct
11 Correct 1 ms 1116 KB Output is correct
12 Correct 1 ms 1116 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 1116 KB Output is correct
15 Correct 2 ms 1372 KB Output is correct
16 Correct 1 ms 1116 KB Output is correct
17 Correct 1 ms 1368 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 2 ms 1416 KB Output is correct
20 Correct 1 ms 1116 KB Output is correct
21 Correct 2 ms 1372 KB Output is correct
22 Correct 1 ms 1116 KB Output is correct
23 Correct 1 ms 1116 KB Output is correct
24 Correct 1 ms 1116 KB Output is correct
25 Correct 1 ms 1116 KB Output is correct
26 Correct 1 ms 1112 KB Output is correct
27 Correct 1 ms 1116 KB Output is correct
28 Correct 2 ms 1372 KB Output is correct
29 Correct 1 ms 1372 KB Output is correct
30 Correct 2 ms 1372 KB Output is correct
31 Correct 1 ms 1116 KB Output is correct
32 Correct 1 ms 1320 KB Output is correct
33 Correct 3 ms 1116 KB Output is correct
34 Correct 1 ms 1116 KB Output is correct
35 Correct 1 ms 1116 KB Output is correct
36 Correct 4 ms 1564 KB Output is correct
37 Correct 11 ms 1880 KB Output is correct
38 Correct 1 ms 1116 KB Output is correct
39 Correct 28 ms 7028 KB Output is correct
40 Correct 15 ms 3032 KB Output is correct
41 Correct 1 ms 1116 KB Output is correct
42 Correct 19 ms 3248 KB Output is correct
43 Correct 3 ms 1624 KB Output is correct
44 Correct 1 ms 1116 KB Output is correct
45 Correct 1 ms 1244 KB Output is correct
46 Correct 144 ms 12748 KB Output is correct
47 Correct 12 ms 2396 KB Output is correct
48 Correct 33 ms 7484 KB Output is correct
49 Correct 75 ms 10460 KB Output is correct
50 Correct 1 ms 1112 KB Output is correct
51 Correct 2 ms 1372 KB Output is correct
52 Correct 1 ms 1116 KB Output is correct
53 Correct 20 ms 4448 KB Output is correct
54 Correct 33 ms 7292 KB Output is correct
55 Correct 1 ms 1116 KB Output is correct
56 Correct 1 ms 1116 KB Output is correct
57 Correct 1 ms 1116 KB Output is correct
58 Correct 78 ms 9336 KB Output is correct
59 Correct 1 ms 1116 KB Output is correct
60 Correct 2 ms 1372 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 7260 KB Output is correct
2 Correct 4 ms 3928 KB Output is correct
3 Execution timed out 6046 ms 217456 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 58.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1112 KB Output is correct
2 Correct 2 ms 1372 KB Output is correct
3 Correct 1 ms 1236 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Correct 1 ms 1116 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1368 KB Output is correct
8 Correct 1 ms 1372 KB Output is correct
9 Correct 1 ms 1116 KB Output is correct
10 Correct 1 ms 1116 KB Output is correct
11 Correct 1 ms 1116 KB Output is correct
12 Correct 1 ms 1116 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 1116 KB Output is correct
15 Correct 2 ms 1372 KB Output is correct
16 Correct 1 ms 1116 KB Output is correct
17 Correct 1 ms 1368 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 2 ms 1416 KB Output is correct
20 Correct 1 ms 1116 KB Output is correct
21 Correct 2 ms 1372 KB Output is correct
22 Correct 1 ms 1116 KB Output is correct
23 Correct 1 ms 1116 KB Output is correct
24 Correct 1 ms 1116 KB Output is correct
25 Correct 1 ms 1116 KB Output is correct
26 Correct 1 ms 1112 KB Output is correct
27 Correct 1 ms 1116 KB Output is correct
28 Correct 2 ms 1372 KB Output is correct
29 Correct 1 ms 1372 KB Output is correct
30 Correct 2 ms 1372 KB Output is correct
31 Correct 1 ms 1116 KB Output is correct
32 Correct 1 ms 1320 KB Output is correct
33 Correct 3 ms 1116 KB Output is correct
34 Correct 1 ms 1116 KB Output is correct
35 Correct 1 ms 1116 KB Output is correct
36 Correct 4 ms 1564 KB Output is correct
37 Correct 11 ms 1880 KB Output is correct
38 Correct 1 ms 1116 KB Output is correct
39 Correct 28 ms 7028 KB Output is correct
40 Correct 15 ms 3032 KB Output is correct
41 Correct 1 ms 1116 KB Output is correct
42 Correct 19 ms 3248 KB Output is correct
43 Correct 3 ms 1624 KB Output is correct
44 Correct 1 ms 1116 KB Output is correct
45 Correct 1 ms 1244 KB Output is correct
46 Correct 144 ms 12748 KB Output is correct
47 Correct 12 ms 2396 KB Output is correct
48 Correct 33 ms 7484 KB Output is correct
49 Correct 75 ms 10460 KB Output is correct
50 Correct 1 ms 1112 KB Output is correct
51 Correct 2 ms 1372 KB Output is correct
52 Correct 1 ms 1116 KB Output is correct
53 Correct 20 ms 4448 KB Output is correct
54 Correct 33 ms 7292 KB Output is correct
55 Correct 1 ms 1116 KB Output is correct
56 Correct 1 ms 1116 KB Output is correct
57 Correct 1 ms 1116 KB Output is correct
58 Correct 78 ms 9336 KB Output is correct
59 Correct 1 ms 1116 KB Output is correct
60 Correct 2 ms 1372 KB Output is correct
61 Correct 24 ms 7260 KB Output is correct
62 Correct 4 ms 3928 KB Output is correct
63 Execution timed out 6046 ms 217456 KB Time limit exceeded
64 Halted 0 ms 0 KB -