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| #include<bits/stdc++.h>
#include<ext/pb_ds/priority_queue.hpp>
using namespace std;
const int MAXN = 2e5 + 5;
const int MAXM = 5e5 + 5;
const int MAXLOG = 20;
const long long INF = 1e18;
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
template <typename T> void chkmax(T &x, T y)
{
x = max(x, y);
}
template <typename T> void chkmin(T &x, T y)
{
x = min(x, y);
}
template <typename T> void read(T &x)
{
x = 0;
int f = 1;
char c = getchar();
for (; !isdigit(c); c = getchar()) if (c == '-') f = -f;
for (; isdigit(c); c = getchar()) x = x * 10 + c - '0';
x *= f;
}
template <typename T> void write(T x)
{
if (x < 0) x = -x, putchar('-');
if (x > 9) write(x / 10);
putchar(x % 10 + '0');
}
template <typename T> void writeln(T x)
{
write(x);
puts("");
}
__gnu_pbds :: priority_queue <ll, greater <ll>> Heap[MAXN], Del[MAXN];
int n, m, home[MAXN], x[MAXM], y[MAXM], w[MAXM];
int sum[MAXN], father[MAXN][MAXLOG];
ll dist[MAXN], depth[MAXN], f[MAXN];
bool vis[MAXN], done[MAXN];
vector <pair <int, int>> a[MAXN];
vector <int> b[MAXN];
int lca(int x, int y)
{
if (sum[x] < sum[y]) swap(x, y);
for (int i = MAXLOG - 1; i >= 0; i--)
if (sum[father[x][i]] >= sum[y]) x = father[x][i];
if (x == y) return x;
for (int i = MAXLOG - 1; i >= 0; i--)
if (father[x][i] != father[y][i])
{
x = father[x][i];
y = father[y][i];
}
return father[x][0];
}
void dfs(int pos, int fa)
{
sum[pos] = sum[fa] + 1;
depth[pos] = dist[pos];
father[pos][0] = fa;
for (int i = 1; i < MAXLOG; i++)
father[pos][i] = father[father[pos][i - 1]][i - 1];
for (auto x : b[pos])
dfs(x, pos);
}
void calcf(int pos, int fa)
{
for (auto x : b[pos])
{
calcf(x, pos);
Heap[pos].join(Heap[x]);
Del[pos].join(Del[x]);
}
while (!Heap[pos].empty() && !Del[pos].empty() && Heap[pos].top() == Del[pos].top())
{
Heap[pos].pop();
Del[pos].pop();
}
if (!Heap[pos].empty()) f[pos] = Heap[pos].top() - depth[pos];
else f[pos] = INF;
if (fa == 0) f[pos] = 0;
}
void shortestPath(int s)
{
static priority_queue <pair <ll, int>> q;
for (int i = 1; i <= n; i++)
dist[i] = INF;
dist[s] = 0, q.emplace(0, s);
while (!q.empty())
{
pair <ll, int> tmp = q.top();
q.pop();
if (vis[tmp.second]) continue;
vis[tmp.second] = true;
for (auto x : a[tmp.second])
if (-tmp.first + x.second < dist[x.first])
{
dist[x.first] = -tmp.first + x.second;
home[x.first] = tmp.second;
q.emplace(-dist[x.first], x.first);
}
}
}
int main()
{
//freopen("rebirth.in", "r", stdin);
//freopen("rebirth.out", "w", stdout);
int num;
read(num), read(n), read(m);
for (int i = 1; i <= m; i++)
{
read(x[i]), read(y[i]), read(w[i]);
a[x[i]].emplace_back(y[i], w[i]);
a[y[i]].emplace_back(x[i], w[i]);
}
for (int i = 1; i <= n; i++)
dist[i] = INF;
shortestPath(1);
for (int i = 1; i <= n; i++)
if (home[i]) b[home[i]].push_back(i);
dfs(1, 0);
for (int i = 1; i <= m; i++)
if (father[x[i]][0] == y[i] && !done[x[i]] && dist[x[i]] == dist[y[i]] + w[i])
{
done[x[i]] = true;
}
else if (father[y[i]][0] == x[i] && !done[y[i]] && dist[y[i]] == dist[x[i]] + w[i])
{
done[y[i]] = true;
}
else
{
int tmp = lca(x[i], y[i]);
Heap[x[i]].push(depth[x[i]] + depth[y[i]] + w[i]);
Heap[y[i]].push(depth[x[i]] + depth[y[i]] + w[i]);
Del[tmp].push(depth[x[i]] + depth[y[i]] + w[i]);
Del[tmp].push(depth[x[i]] + depth[y[i]] + w[i]);
}
calcf(1, 0);
for (int i = 1; i <= n; i++)
if (f[i] == INF) printf("%d ", -1);
else printf("%lld ", f[i]);
printf("\n");
return 0;
}
|