oj.uz

답안 #399281

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
399281 2021-05-05T13:59:41 Z fvogel499 악어의 지하 도시 (IOI11_crocodile) C++14
0 / 100
 2 ms 336 KB 
#include <iostream>
#include <vector>
#include <queue>
#include <algorithm>

using namespace std;

#define pii pair<int, int>
#define MAX_N 50000
#define MAX_M 10000000
#define inf 1e18
#define ll long long

ll dist [MAX_N];
ll secondDist [MAX_N];
bool proc [MAX_N];

struct Compare {
    bool operator()(int a, int b) {
        return (secondDist[a] >= secondDist[b]);
    }
};

int travel_plan(int nbNodes, int nbEdges, int corridors [MAX_M][2], int travelTime [MAX_M], int nbExits, int exits [MAX_N]) {
    vector<vector<pii>> graph(nbNodes);
    for (int i = 0; i < nbEdges; i++) {
        graph[corridors[i][0]].push_back(pii(corridors[i][1], travelTime[i]));
        graph[corridors[i][1]].push_back(pii(corridors[i][0], travelTime[i]));
    }

    for (int i = 0; i < nbNodes; i++) {
        dist[i] = inf;
        secondDist[i] = inf;
        proc[i] = false;
    }
    priority_queue<int, vector<int>, Compare> q;
    for (int i = 0; i < nbExits; i++) {
        q.push(exits[i]);
        dist[exits[i]] = 0;
        secondDist[exits[i]] = 0;
    }
    while (!q.empty()) {
        int curNode = q.top();
        q.pop();
        if (proc[curNode]) continue;
        proc[curNode] = true;
        for (pii newEdge : graph[curNode]) {
            int newNode = newEdge.first;
            ll newWeight = newEdge.second;
            ll newDist = secondDist[curNode]+newWeight;
            if (proc[newNode] or newDist > secondDist[newNode]) continue;
            if (newDist <= dist[newNode]) {
                secondDist[newNode] = dist[newNode];
                dist[newNode] = newDist;
            }
            else if (newDist <= secondDist[newNode]) {
                secondDist[newNode] = newDist;
            }
            else {
                cerr << "ISSUE-1";
            }
            q.push(newNode);
        }
    }

    return secondDist[0];
}

// int corridors [MAX_M][2];
// int travelTime [MAX_M];
// int exits [MAX_N];

// int32_t main() {
//     int nbNodes, nbEdges, nbExits;
//     cin >> nbNodes >> nbEdges >> nbExits; // simul
//     for (int i = 0; i < nbEdges; i++) cin >> corridors[i][0] >> corridors[i][1]; // simul
//     for (int i = 0; i < nbEdges; i++) cin >> travelTime[i]; // simul
//     for (int i = 0; i < nbExits; i++) cin >> exits[i];
//     cout << travel_plan(nbNodes, nbEdges, corridors, travelTime, nbExits, exits);
//     int d = 0;
//     d++;
// }

Subtask #1
0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 2 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Incorrect 2 ms 332 KB Output isn't correct

Subtask #2
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 2 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Incorrect 2 ms 332 KB Output isn't correct

Subtask #3
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 2 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Incorrect 2 ms 332 KB Output isn't correct