#include <bits/stdc++.h>
#pragma GCC optimize("O2")
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef long double ld;
typedef pair<pii, int> piii;
#define debug(x) {cerr<<#x<<"="<<x<<"\n";}
#define debug2(x, y) {cerr<<"{"<<#x<<", "<<#y<<"}={"<<x<<", "<<y<<"}\n";}
#define debugp(p) {cerr<<#p<<"={"<<p.first<<" "<<p.second<<"}\n";}
#define debugv(abcd) {cerr<<#abcd<<": ";for (auto dcba:abcd) cerr<<dcba<<" ";cerr<<"\n";}
#define pb push_back
#define all(x) x.begin(), x.end()
#define kill(x) return cout<<x<<"\n", 0;
#define SZ(x) ((int)x.size())
const int inf=1000010000;
const ll INF=10000000000100000ll; // 1e16
const int mod=1000000007;
const int MAXN=100010;
int n, m, q, k, u, v, x, y, t;
int L[MAXN], R[MAXN], T[MAXN], C[MAXN];
int mark[MAXN];
ll dist[MAXN], ans=INF;
inline bool upd(ll &x, ll y){
if (x<=y) return 0;
x=y;
return 1;
}
int main(){
ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
memset(dist, 63, sizeof(dist));
cin>>n>>m;
for (int i=1; i<=m; i++){
cin>>T[i]>>L[i]>>R[i]>>C[i];
L[i]--;
if (!L[i]) upd(dist[i], C[i]);
}
while (1){
int v=0;
for (int i=1; i<=m; i++) if (!mark[i] && dist[i]<dist[v]) v=i;
if (!v) break ;
mark[v]=1;
for (int i=1; i<=m; i++) if (!mark[i]){
bool ok=0;
if (T[i]<=T[v]){
ok=(L[i]+(T[v]-T[i])<=R[v]);
}
else{
ok=(L[i]<=R[v]-(T[i]-T[v]));
}
if (!ok) continue ;
upd(dist[i], dist[v]+C[i]);
}
}
for (int i=1; i<=m; i++) if (R[i]==n) upd(ans, dist[i]);
if (ans>=INF) ans=-1;
cout<<ans<<"\n";
return 0;
}
/*
10 5
2 5 10 3
1 1 6 5
5 2 8 3
7 6 10 4
4 1 3 1
10 5
2 6 10 3
1 1 5 5
5 2 7 3
8 6 10 4
4 1 3 1
10 5
1 5 10 4
1 1 6 5
1 4 8 3
1 6 10 3
1 1 3 1
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
3039 ms |
6364 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1100 KB |
Output is correct |
2 |
Correct |
1 ms |
1100 KB |
Output is correct |
3 |
Correct |
1 ms |
1100 KB |
Output is correct |
4 |
Correct |
1 ms |
1100 KB |
Output is correct |
5 |
Correct |
1 ms |
1100 KB |
Output is correct |
6 |
Correct |
1 ms |
1100 KB |
Output is correct |
7 |
Correct |
1 ms |
1100 KB |
Output is correct |
8 |
Correct |
1 ms |
1100 KB |
Output is correct |
9 |
Correct |
1 ms |
1100 KB |
Output is correct |
10 |
Correct |
1 ms |
1100 KB |
Output is correct |
11 |
Correct |
1 ms |
1100 KB |
Output is correct |
12 |
Correct |
1 ms |
1100 KB |
Output is correct |
13 |
Correct |
1 ms |
1100 KB |
Output is correct |
14 |
Correct |
1 ms |
1100 KB |
Output is correct |
15 |
Correct |
1 ms |
1100 KB |
Output is correct |
16 |
Correct |
1 ms |
1100 KB |
Output is correct |
17 |
Correct |
1 ms |
1100 KB |
Output is correct |
18 |
Correct |
1 ms |
1108 KB |
Output is correct |
19 |
Correct |
1 ms |
1100 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1100 KB |
Output is correct |
2 |
Correct |
1 ms |
1100 KB |
Output is correct |
3 |
Correct |
1 ms |
1100 KB |
Output is correct |
4 |
Correct |
1 ms |
1100 KB |
Output is correct |
5 |
Correct |
1 ms |
1100 KB |
Output is correct |
6 |
Correct |
1 ms |
1100 KB |
Output is correct |
7 |
Correct |
1 ms |
1100 KB |
Output is correct |
8 |
Correct |
1 ms |
1100 KB |
Output is correct |
9 |
Correct |
1 ms |
1100 KB |
Output is correct |
10 |
Correct |
1 ms |
1100 KB |
Output is correct |
11 |
Correct |
1 ms |
1100 KB |
Output is correct |
12 |
Correct |
1 ms |
1100 KB |
Output is correct |
13 |
Correct |
1 ms |
1100 KB |
Output is correct |
14 |
Correct |
1 ms |
1100 KB |
Output is correct |
15 |
Correct |
1 ms |
1100 KB |
Output is correct |
16 |
Correct |
1 ms |
1100 KB |
Output is correct |
17 |
Correct |
1 ms |
1100 KB |
Output is correct |
18 |
Correct |
1 ms |
1108 KB |
Output is correct |
19 |
Correct |
1 ms |
1100 KB |
Output is correct |
20 |
Correct |
200 ms |
1228 KB |
Output is correct |
21 |
Correct |
193 ms |
1312 KB |
Output is correct |
22 |
Correct |
179 ms |
1384 KB |
Output is correct |
23 |
Correct |
142 ms |
1392 KB |
Output is correct |
24 |
Correct |
225 ms |
1356 KB |
Output is correct |
25 |
Correct |
128 ms |
1360 KB |
Output is correct |
26 |
Correct |
109 ms |
1392 KB |
Output is correct |
27 |
Correct |
108 ms |
1520 KB |
Output is correct |
28 |
Correct |
253 ms |
1356 KB |
Output is correct |
29 |
Correct |
114 ms |
1360 KB |
Output is correct |
30 |
Correct |
4 ms |
1356 KB |
Output is correct |
31 |
Correct |
4 ms |
1356 KB |
Output is correct |
32 |
Correct |
257 ms |
1404 KB |
Output is correct |
33 |
Correct |
249 ms |
1380 KB |
Output is correct |
34 |
Correct |
219 ms |
1364 KB |
Output is correct |
35 |
Correct |
272 ms |
1356 KB |
Output is correct |
36 |
Correct |
229 ms |
1356 KB |
Output is correct |
37 |
Correct |
215 ms |
1348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
3039 ms |
6364 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |