#include<bits/stdc++.h>
#define pb push_back
#define pli pair<int,int>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxn=2e5;
const ll inf=1e18;
const ll mod=1e9+7;
ll n,m,t[maxn],l[maxn],r[maxn],c[maxn],d[maxn];
priority_queue<pli,vector<pli>,greater<pli>>pq;
vector<ll>g[maxn];
void solve()
{
cin >> n >> m;
for(int i=1;i<=m;i++)
{
cin >> t[i] >> l[i] >> r[i] >> c[i];
}
for(int i=1;i<=m;i++)
{
for(int j=1;j<=m;j++)
{
if(i==j) continue;
/*if(t[i]<=t[j])
{
if(l[j]<=r[i]-(t[j]-t[i])+1) g[i].pb(j);
}
else*/
{
if(r[i]>=l[j]+abs(t[i]-t[j])-1) g[i].pb(j);
}
}
}
for(int i=1;i<=m;i++)
{
d[i]=inf;
if(l[i]==1)
{
d[i]=c[i];
pq.push({d[i],i});
}
}
while(!pq.empty())
{
ll u=pq.top().se;
ll W=pq.top().fi;
pq.pop();
if(W>d[u]) continue;
if(r[u]==n) {cout << W;return;}
for(int v:g[u])
{
if(d[v]>d[u]+c[v])
{
d[v]=d[u]+c[v];
pq.push({d[v],v});
}
}
}
cout << -1;
}
int main()
{
fastio
//freopen(TASKNAME".INP","r",stdin);
//freopen(TASKNAME".OUT","w",stdout);
solve();
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
674 ms |
524288 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12888 KB |
Output is correct |
2 |
Correct |
2 ms |
12888 KB |
Output is correct |
3 |
Correct |
2 ms |
12892 KB |
Output is correct |
4 |
Incorrect |
2 ms |
12940 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12888 KB |
Output is correct |
2 |
Correct |
2 ms |
12888 KB |
Output is correct |
3 |
Correct |
2 ms |
12892 KB |
Output is correct |
4 |
Incorrect |
2 ms |
12940 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
674 ms |
524288 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |