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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#60413 | #4437. Link with Running | qinjianbin# | TL | 0ms | 0kb | C++17 | 1.5kb | 2022-11-04 15:36:39 | 2022-11-04 15:36:40 |
Judging History
answer
#include<bits/stdc++.h>
#define rep(i, a, b) for(int i = (a); i < (b); i++)
#define _for(i, a, b) for(int i = (a); i <= (b); i++)
using namespace std;
typedef long long ll;
const int N = 1e5 + 10;
struct Edge
{
int v; ll w, p;
bool operator < (const Edge& rhs) const
{
return w > rhs.w;
}
};
vector<Edge> g[N];
int deg[N], vis[N], n, m;
ll d[N], dp[N];
void solve()
{
_for(i, 1, n) d[i] = 1e18;
d[1] = 0;
priority_queue<Edge> q;
q.push({1, d[1], 0});
while(!q.empty())
{
Edge x = q.top(); q.pop();
int u = x.v;
if(d[u] != x.w) continue;
for(auto [v, w, p]: g[u])
if(d[v] > d[u] + w)
{
d[v] = d[u] + w;
q.push({v, d[v], 0});
}
}
}
int main()
{
int T; scanf("%d", &T);
while(T--)
{
scanf("%d%d", &n, &m);
_for(i, 1, n) g[i].clear();
while(m--)
{
int u, v, w, p;
scanf("%d%d%d%d", &u, &v, &w, &p);
g[u].push_back({v, w, p});
}
solve();
printf("%lld ", d[n]);
_for(i, 1, n) dp[i] = deg[i] = vis[i] = 0;
deque<int> q;
q.push_front(1);
vis[1] = 1;
while(!q.empty())
{
int u = q.front(); q.pop_front();
vis[u] = 0;
for(auto [v, w, p]: g[u])
if(d[v] == d[u] + w)
if(dp[v] < dp[u] + p)
{
dp[v] = dp[u] + p;
if(!vis[v])
{
if(!q.empty() && d[v] > d[q.front()]) q.push_front(v);
else q.push_back(v);
vis[v] = 1;
}
}
}
printf("%lld\n", dp[n]);
}
return 0;
}
Details
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Test #1:
score: 0
Time Limit Exceeded
input:
12 100000 200000 1 2 838279516 902819511 1 3 293478832 513256010 2 4 682688353 204481674 2 5 360092507 651108247 5 6 519851939 323803002 6 7 675439277 205804465 7 8 419167205 386168059 6 9 140767493 382483305 9 10 558115401 613738466 9 11 902235661 744659643 9 12 851394758 1720015 12 13 635355827 46...