90分挂了最后一个点
查看原帖
90分挂了最后一个点
704081
ly_father楼主2022/5/15 13:19
#include <iostream>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <queue>

using namespace std;

typedef pair<int, int> PII;

const int N = 1e4 + 10, M = 5e5 + 10;

int n, m, s;
int h[N], e[M], ne[M], w[M], idx;
int dist[N];
bool st[N];

void add(int a, int b, int c)
{
    e[idx] = b, w[idx] = c, ne[idx] = h[a], h[a] = idx ++ ;
}

void dijkstra()
{
    memset(dist, 0x3f, sizeof dist);
    dist[s] = 0;
    priority_queue<PII, vector<PII>, greater<PII> > heap;
    heap.push({0, s});

    while (heap.size())
    {
        auto t = heap.top();
        heap.pop();

        int ver = t.second, distance = t.first;

        if (st[ver]) continue;

        for (int i = h[ver]; i != -1; i = ne[i])
        {
            int j = e[i];
            if (dist[j] > dist[ver] + w[i])
            {
                dist[j] = dist[ver] + w[i];
                heap.push({dist[j], j});
            }
        }
    }
}

int main()
{
    cin >> n >> m >> s;
    
    memset(h, -1, sizeof h);
    
    for (int i = 1; i <= m; i ++ )
    {
        int a, b, c;
        cin >> a >> b >> c;
        add(a, b, c);
    }
    
    dijkstra();
    
    for (int i = 1; i <= n; i ++)
        printf("%d ", dist[i]);
    
    return 0;
}

大佬们帮我看看吧挂了一个数据

5 15 5
2 2 270
1 4 89
2 1 3
5 5 261
5 2 163
5 5 275
4 5 108
4 4 231
3 4 213
3 3 119
3 1 77
3 1 6
2 4 83
5 5 196
5 5 94

答案应该是

166 163 2147483647 246 0 

我的答案是

166 163 1061109567 246 0 

求大佬援助呜呜呜

2022/5/15 13:19
加载中...