oj.uz

Submission #51992

# Submission time Handle Problem Language Result Execution time Memory
51992 2018-06-22T22:34:47 Z gs13105 Crocodile's Underground City (IOI11_crocodile) C++17
100 / 100
 785 ms 46104 KB 
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cassert>
#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <list>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <tuple>
#include <iterator>

using namespace std;

struct edg
{
    int x, w;
    bool operator <(const edg &a) const
    {
        return w > a.w;
    }
};

vector<edg> arr[100010];
edg dis[100010][2];
int INF = 1e9 + 10;

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    for(int i = 0; i < M; i++)
    {
        int x = R[i][0];
        int y = R[i][1];
        int w = L[i];
        arr[x].push_back({ y, w });
        arr[y].push_back({ x, w });
    }

    for(int i = 0; i < N; i++)
        dis[i][0] = dis[i][1] = { i, INF };

    priority_queue<edg> pq;
    for(int i = 0; i < K; i++)
    {
        int x = P[i];
        dis[x][0] = dis[x][1] = { x, 0 };
        pq.push({ x, 0 });
    }

    while(!pq.empty())
    {
        int x = pq.top().x;
        int w = pq.top().w;
        pq.pop();

        if(w > dis[x][1].w)
            continue;

        for(edg e : arr[x])
        {
            int nw = w + e.w;
            if(nw < dis[e.x][0].w)
            {
                if(x == dis[e.x][0].x)
                    dis[e.x][0].w = nw;
                else
                {
                    dis[e.x][1] = dis[e.x][0];
                    dis[e.x][0] = { x, nw };
                    if(dis[e.x][1].w != INF)
                        pq.push({ e.x, dis[e.x][1].w });
                }
            }
            else if(nw < dis[e.x][1].w && x != dis[e.x][0].x)
            {
                dis[e.x][1] = { x, nw };
                if(dis[e.x][1].w != INF)
                    pq.push({ e.x, dis[e.x][1].w });
            }
        }
    }

    assert(dis[0][1].w != INF);
    return dis[0][1].w;
}

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2792 KB Output is correct
3 Correct 5 ms 2792 KB Output is correct
4 Correct 5 ms 2908 KB Output is correct
5 Correct 5 ms 2944 KB Output is correct
6 Correct 4 ms 2944 KB Output is correct
7 Correct 4 ms 2944 KB Output is correct
8 Correct 5 ms 2944 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2792 KB Output is correct
3 Correct 5 ms 2792 KB Output is correct
4 Correct 5 ms 2908 KB Output is correct
5 Correct 5 ms 2944 KB Output is correct
6 Correct 4 ms 2944 KB Output is correct
7 Correct 4 ms 2944 KB Output is correct
8 Correct 5 ms 2944 KB Output is correct
9 Correct 6 ms 3212 KB Output is correct
10 Correct 4 ms 3212 KB Output is correct
11 Correct 5 ms 3212 KB Output is correct
12 Correct 9 ms 3408 KB Output is correct
13 Correct 7 ms 3408 KB Output is correct
14 Correct 4 ms 3408 KB Output is correct
15 Correct 5 ms 3408 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2792 KB Output is correct
3 Correct 5 ms 2792 KB Output is correct
4 Correct 5 ms 2908 KB Output is correct
5 Correct 5 ms 2944 KB Output is correct
6 Correct 4 ms 2944 KB Output is correct
7 Correct 4 ms 2944 KB Output is correct
8 Correct 5 ms 2944 KB Output is correct
9 Correct 6 ms 3212 KB Output is correct
10 Correct 4 ms 3212 KB Output is correct
11 Correct 5 ms 3212 KB Output is correct
12 Correct 9 ms 3408 KB Output is correct
13 Correct 7 ms 3408 KB Output is correct
14 Correct 4 ms 3408 KB Output is correct
15 Correct 5 ms 3408 KB Output is correct
16 Correct 612 ms 41620 KB Output is correct
17 Correct 101 ms 41620 KB Output is correct
18 Correct 138 ms 41620 KB Output is correct
19 Correct 785 ms 46104 KB Output is correct
20 Correct 381 ms 46104 KB Output is correct
21 Correct 47 ms 46104 KB Output is correct
22 Correct 364 ms 46104 KB Output is correct