Submission #962079

#	Time	Username	Problem	Language	Result	Execution time	Memory
962079		Ice_man	Dreaming (IOI13_dreaming)	C++14	100 / 100	67 ms	62420 KiB

dreaming

/**
 ____    ____    ____    __________________    ____    ____    ____
||I ||  ||c ||  ||e ||  ||                ||  ||M ||  ||a ||  ||n ||
||__||  ||__||  ||__||  ||________________||  ||__||  ||__||  ||__||
|/__\|  |/__\|  |/__\|  |/________________\|  |/__\|  |/__\|  |/__\|

*/

#include"dreaming.h".
#include <iostream>
#include <chrono>
#include <vector>
#include <algorithm>

#define maxn 2000005
#define maxlog 20
#define INF 1000000010
#define LINF 1000000000000000005
#define endl '\n'
#define pb(x) push_back(x)
#define X first
#define Y second
#define control cerr<<"passed"<<endl;

#pragma GCC optimize("O3" , "Ofast" , "unroll-loops" , "fast-math")
#pragma GCC target("avx2")

using namespace std;

/**std::chrono::high_resolution_clock::time_point startT, currT;
constexpr double TIME_MULT = 1;

double timePassed()
{
    using namespace std::chrono;
    currT = high_resolution_clock::now();
    double time = duration_cast<duration<double>>(currT - startT).count();
    return time * TIME_MULT;
}*/

typedef pair <int , int> pii;


vector <pii> v[maxn];
bool used[maxn];


pii dfs(int node , int _par , int depth)
{
    int current = 0 , cur_ans = depth;
    pii _try;

    for(pii nb : v[node])
    {
        if(nb.X == _par)
            continue;

        _try = dfs(nb.X , node , depth + nb.Y);
        if(_try.X + nb.Y > current)
        {
            current = _try.X + nb.Y;
            cur_ans = min(_try.Y , max(depth , current));
        }
    }
    return make_pair(current , cur_ans);
}



pii f(int node , int _par)
{
    used[node] = true;
    pii current;
    current.X = 0;
    current.Y = node;
    pii current2;

    for(pii nb : v[node])
    {
        if(nb.X == _par)
            continue;

        current2 = f(nb.X , node);
        current2.X += nb.Y;
        current = max(current , current2);
    }

    return current;
}




int travelTime(int N , int M , int L , int A[] , int B[] , int T[])
{
    int ans = 0;

    for(int i = 0; i < M; i++)
    {
        v[A[i]].push_back({B[i] , T[i]});
        v[B[i]].push_back({A[i] , T[i]});
    }

    vector <int> distances;

    for(int i = 0; i < N; i++)
    {
        if(used[i] == true)
            continue;

        int dist = f(i , -1).Y;
        pii cur_ans = dfs(dist , -1 , 0);
        ans = max(ans , cur_ans.X);
        distances.pb(cur_ans.Y);
    }


    sort(distances.begin() , distances.end());
    reverse(distances.begin() , distances.end());

    if(distances.size() > 1)
        ans = max(ans , distances[0] + distances[1] + L);
    if(distances.size() > 2)
        ans = max(ans , distances[1] + distances[2] + (2 * L));
    return ans;
}






/**int main()
{

    #ifdef ONLINE_JUDGE /// promeni
        freopen("taxi.in", "r", stdin);
        freopen("taxi.out", "w", stdout);
    #endif

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    //startT = std::chrono::high_resolution_clock::now();


    read();
    solve();

    return 0;
}*/

Compilation message (stderr)

dreaming.cpp:9:21: warning: extra tokens at end of #include directive
    9 | #include"dreaming.h".
      |                     ^

• Subtask 1: 14 / 14
• Subtask 2: 10 / 10
• Subtask 3: 23 / 23
• Subtask 4: 18 / 18
• Subtask 5: 12 / 12
• Subtask 6: 23 / 23