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48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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#define CRP(t, x) const t &x
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#define OPL(t, x) bool operator<(CRP(t, x)) const
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#define FIL(x, v) memset(x, v, sizeof(x))
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#define CLR(x) FIL(x, 0)
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#define NE1(x) FIL(x, -1)
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#define INF(x) FIL(x, 0x3f)
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#ifndef _DEBUG
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#define _DEBUG 0
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#endif // !_DEBUG
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#define IFD if (_DEBUG)
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typedef long long ll, i64;
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const int N = 1e5 + 50;
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struct Edge
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{
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int nxt, to, l, r;
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} E[N];
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int adj[N], ecnt;
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inline void addEdge(int f, int t, int l, int r)
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{
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E[++ecnt] = {adj[f], t, l, r};
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adj[f] = ecnt;
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}
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bool modify(int u, int v, int l, int r)
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{
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return false;
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}
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int main()
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{
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int n, m;
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scanf("%d%d", &n, &m);
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for (int i = 0, f, t, l, r; i < m; i++)
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{
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scanf("%d%d%d%d", &f, &t, &l, &r);
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addEdge(f, t, l, r);
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addEdge(t, f, l, r);
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}
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queue<int> Q;
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static bool inq[N];
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for (Q.push(1), inq[1] = true; !Q.empty(); inq[Q.front()] = false, Q.pop())
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for (int u, e = adj[u = Q.front()]; e; e = E[e].nxt)
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if (modify(u, E[e].to, E[e].l, E[e].r) && !inq[E[e].to])
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Q.push(E[e].to), inq[E[e].to] = true;
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return 0;
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} |