#include<bits/stdc++.h>
using ll = long long;
using namespace std;
#define pll pair <ll,ll>
#define fi first
#define se second
#define MP make_pair
#define sz(a) (ll((a).size()))
#define BIT(mask,i) (((mask) >> (i))&1)
#define MASK(i) (1LL << (i))
const ll MAXN = 1e5+100;
const ll INF = 1e18;
ll dp[MAXN];
struct treatment{
ll t,l,r,c;
};
treatment a[MAXN];
vector <pll> tree1[MAXN*4],tree2[MAXN*4];
vector <ll> val_t;
void update(ll id,ll l,ll r,ll pos){
if (val_t[l] > a[pos].t || val_t[r] < a[pos].t)return;
tree1[id].push_back(MP(a[pos].l - a[pos].t,pos));
tree2[id].push_back(MP(a[pos].l + a[pos].t,pos));
if (l == r){
return;
}
ll mid = (l + r) >> 1;
update(id<<1,l,mid,pos);
update(id<<1|1,mid+1,r,pos);
}
void build(ll id,ll l,ll r){
sort(tree1[id].begin(),tree1[id].end(),greater <>());
sort(tree2[id].begin(),tree2[id].end(),greater <>());
if (l != r){
ll mid = (l + r) >> 1;
build(id<<1,l,mid);
build(id<<1|1,mid+1,r);
}
}
vector <ll> all;
void get1(ll id,ll l,ll r,ll pos){
if (val_t[l] > a[pos].t)return;
if (val_t[r] <= a[pos].t){
while (!tree1[id].empty() && tree1[id].back().fi <= a[pos].r - a[pos].t + 1){
all.push_back(tree1[id].back().se);
tree1[id].pop_back();
}
return;
}
ll mid = (l + r) >> 1;
get1(id<<1,l,mid,pos);
get1(id<<1|1,mid+1,r,pos);
}
void get2(ll id,ll l,ll r,ll pos){
if (val_t[r] < a[pos].t)return;
if (val_t[l] >= a[pos].t){
while (!tree2[id].empty() && tree2[id].back().fi <= a[pos].r + a[pos].t + 1){
all.push_back(tree2[id].back().se);
tree2[id].pop_back();
}
return;
}
ll mid = (l + r) >> 1;
get2(id<<1,l,mid,pos);
get2(id<<1|1,mid+1,r,pos);
}
ll n,m;
int main(){
ios_base::sync_with_stdio(0);cin.tie(nullptr);
cin>>n>>m;
for (ll i = 1;i <= m;i ++){
cin>>a[i].t>>a[i].l>>a[i].r>>a[i].c;
val_t.push_back(a[i].t);
}
sort(val_t.begin(),val_t.end());
val_t.resize(unique(val_t.begin(),val_t.end())-val_t.begin());
val_t.insert(val_t.begin(),0);
for (ll i = 1;i <= m;i ++)update(1,1,sz(val_t)-1,i);
build(1,1,sz(val_t)-1);
priority_queue <pll,vector <pll> ,greater <> > q;
for (ll i = 1;i <= m;i ++){
if (a[i].l == 1){dp[i] = a[i].c;q.push(MP(a[i].c,i));}
else dp[i] = INF;
}
while (!q.empty()){
ll u = q.top().se;
q.pop();
all.clear();
get1(1,1,sz(val_t)-1,u);
get2(1,1,sz(val_t)-1,u);
for (auto v:all){
// cout<<v<<
if (dp[v] == INF){
dp[v] = dp[u] + a[v].c;
q.push(MP(dp[v],v));
}
}
}
ll ans = INF;
for (ll i = 1;i <= m;i ++)if (a[i].r == n)ans = min(ans,dp[i]);
if (ans == INF)ans = -1;
cout<<ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
53 ms |
30372 KB |
Output is correct |
2 |
Correct |
46 ms |
30256 KB |
Output is correct |
3 |
Correct |
72 ms |
31216 KB |
Output is correct |
4 |
Correct |
59 ms |
30452 KB |
Output is correct |
5 |
Correct |
51 ms |
33200 KB |
Output is correct |
6 |
Correct |
46 ms |
30308 KB |
Output is correct |
7 |
Correct |
49 ms |
30268 KB |
Output is correct |
8 |
Correct |
45 ms |
30316 KB |
Output is correct |
9 |
Correct |
57 ms |
30212 KB |
Output is correct |
10 |
Correct |
56 ms |
30088 KB |
Output is correct |
11 |
Correct |
73 ms |
34416 KB |
Output is correct |
12 |
Correct |
50 ms |
34804 KB |
Output is correct |
13 |
Correct |
75 ms |
33084 KB |
Output is correct |
14 |
Correct |
73 ms |
33264 KB |
Output is correct |
15 |
Correct |
69 ms |
30232 KB |
Output is correct |
16 |
Correct |
46 ms |
30300 KB |
Output is correct |
17 |
Correct |
56 ms |
29436 KB |
Output is correct |
18 |
Correct |
53 ms |
33652 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
21084 KB |
Output is correct |
2 |
Correct |
4 ms |
21120 KB |
Output is correct |
3 |
Correct |
3 ms |
21084 KB |
Output is correct |
4 |
Correct |
3 ms |
21084 KB |
Output is correct |
5 |
Correct |
2 ms |
21156 KB |
Output is correct |
6 |
Correct |
3 ms |
21160 KB |
Output is correct |
7 |
Correct |
3 ms |
21084 KB |
Output is correct |
8 |
Correct |
3 ms |
21160 KB |
Output is correct |
9 |
Correct |
4 ms |
21152 KB |
Output is correct |
10 |
Correct |
4 ms |
21084 KB |
Output is correct |
11 |
Correct |
4 ms |
21084 KB |
Output is correct |
12 |
Correct |
4 ms |
21084 KB |
Output is correct |
13 |
Correct |
4 ms |
21084 KB |
Output is correct |
14 |
Correct |
4 ms |
21084 KB |
Output is correct |
15 |
Correct |
3 ms |
21084 KB |
Output is correct |
16 |
Correct |
4 ms |
21084 KB |
Output is correct |
17 |
Correct |
4 ms |
21084 KB |
Output is correct |
18 |
Correct |
4 ms |
21084 KB |
Output is correct |
19 |
Correct |
3 ms |
21084 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
21084 KB |
Output is correct |
2 |
Correct |
4 ms |
21120 KB |
Output is correct |
3 |
Correct |
3 ms |
21084 KB |
Output is correct |
4 |
Correct |
3 ms |
21084 KB |
Output is correct |
5 |
Correct |
2 ms |
21156 KB |
Output is correct |
6 |
Correct |
3 ms |
21160 KB |
Output is correct |
7 |
Correct |
3 ms |
21084 KB |
Output is correct |
8 |
Correct |
3 ms |
21160 KB |
Output is correct |
9 |
Correct |
4 ms |
21152 KB |
Output is correct |
10 |
Correct |
4 ms |
21084 KB |
Output is correct |
11 |
Correct |
4 ms |
21084 KB |
Output is correct |
12 |
Correct |
4 ms |
21084 KB |
Output is correct |
13 |
Correct |
4 ms |
21084 KB |
Output is correct |
14 |
Correct |
4 ms |
21084 KB |
Output is correct |
15 |
Correct |
3 ms |
21084 KB |
Output is correct |
16 |
Correct |
4 ms |
21084 KB |
Output is correct |
17 |
Correct |
4 ms |
21084 KB |
Output is correct |
18 |
Correct |
4 ms |
21084 KB |
Output is correct |
19 |
Correct |
3 ms |
21084 KB |
Output is correct |
20 |
Correct |
11 ms |
24408 KB |
Output is correct |
21 |
Correct |
12 ms |
24428 KB |
Output is correct |
22 |
Correct |
11 ms |
23900 KB |
Output is correct |
23 |
Correct |
10 ms |
23644 KB |
Output is correct |
24 |
Correct |
12 ms |
24872 KB |
Output is correct |
25 |
Correct |
11 ms |
24668 KB |
Output is correct |
26 |
Correct |
15 ms |
24668 KB |
Output is correct |
27 |
Correct |
10 ms |
24668 KB |
Output is correct |
28 |
Correct |
16 ms |
24668 KB |
Output is correct |
29 |
Correct |
15 ms |
24924 KB |
Output is correct |
30 |
Correct |
8 ms |
24488 KB |
Output is correct |
31 |
Correct |
8 ms |
24668 KB |
Output is correct |
32 |
Correct |
12 ms |
24924 KB |
Output is correct |
33 |
Correct |
12 ms |
24976 KB |
Output is correct |
34 |
Correct |
11 ms |
24388 KB |
Output is correct |
35 |
Correct |
14 ms |
24876 KB |
Output is correct |
36 |
Correct |
12 ms |
24924 KB |
Output is correct |
37 |
Correct |
18 ms |
24412 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
53 ms |
30372 KB |
Output is correct |
2 |
Correct |
46 ms |
30256 KB |
Output is correct |
3 |
Correct |
72 ms |
31216 KB |
Output is correct |
4 |
Correct |
59 ms |
30452 KB |
Output is correct |
5 |
Correct |
51 ms |
33200 KB |
Output is correct |
6 |
Correct |
46 ms |
30308 KB |
Output is correct |
7 |
Correct |
49 ms |
30268 KB |
Output is correct |
8 |
Correct |
45 ms |
30316 KB |
Output is correct |
9 |
Correct |
57 ms |
30212 KB |
Output is correct |
10 |
Correct |
56 ms |
30088 KB |
Output is correct |
11 |
Correct |
73 ms |
34416 KB |
Output is correct |
12 |
Correct |
50 ms |
34804 KB |
Output is correct |
13 |
Correct |
75 ms |
33084 KB |
Output is correct |
14 |
Correct |
73 ms |
33264 KB |
Output is correct |
15 |
Correct |
69 ms |
30232 KB |
Output is correct |
16 |
Correct |
46 ms |
30300 KB |
Output is correct |
17 |
Correct |
56 ms |
29436 KB |
Output is correct |
18 |
Correct |
53 ms |
33652 KB |
Output is correct |
19 |
Correct |
4 ms |
21084 KB |
Output is correct |
20 |
Correct |
4 ms |
21120 KB |
Output is correct |
21 |
Correct |
3 ms |
21084 KB |
Output is correct |
22 |
Correct |
3 ms |
21084 KB |
Output is correct |
23 |
Correct |
2 ms |
21156 KB |
Output is correct |
24 |
Correct |
3 ms |
21160 KB |
Output is correct |
25 |
Correct |
3 ms |
21084 KB |
Output is correct |
26 |
Correct |
3 ms |
21160 KB |
Output is correct |
27 |
Correct |
4 ms |
21152 KB |
Output is correct |
28 |
Correct |
4 ms |
21084 KB |
Output is correct |
29 |
Correct |
4 ms |
21084 KB |
Output is correct |
30 |
Correct |
4 ms |
21084 KB |
Output is correct |
31 |
Correct |
4 ms |
21084 KB |
Output is correct |
32 |
Correct |
4 ms |
21084 KB |
Output is correct |
33 |
Correct |
3 ms |
21084 KB |
Output is correct |
34 |
Correct |
4 ms |
21084 KB |
Output is correct |
35 |
Correct |
4 ms |
21084 KB |
Output is correct |
36 |
Correct |
4 ms |
21084 KB |
Output is correct |
37 |
Correct |
3 ms |
21084 KB |
Output is correct |
38 |
Correct |
11 ms |
24408 KB |
Output is correct |
39 |
Correct |
12 ms |
24428 KB |
Output is correct |
40 |
Correct |
11 ms |
23900 KB |
Output is correct |
41 |
Correct |
10 ms |
23644 KB |
Output is correct |
42 |
Correct |
12 ms |
24872 KB |
Output is correct |
43 |
Correct |
11 ms |
24668 KB |
Output is correct |
44 |
Correct |
15 ms |
24668 KB |
Output is correct |
45 |
Correct |
10 ms |
24668 KB |
Output is correct |
46 |
Correct |
16 ms |
24668 KB |
Output is correct |
47 |
Correct |
15 ms |
24924 KB |
Output is correct |
48 |
Correct |
8 ms |
24488 KB |
Output is correct |
49 |
Correct |
8 ms |
24668 KB |
Output is correct |
50 |
Correct |
12 ms |
24924 KB |
Output is correct |
51 |
Correct |
12 ms |
24976 KB |
Output is correct |
52 |
Correct |
11 ms |
24388 KB |
Output is correct |
53 |
Correct |
14 ms |
24876 KB |
Output is correct |
54 |
Correct |
12 ms |
24924 KB |
Output is correct |
55 |
Correct |
18 ms |
24412 KB |
Output is correct |
56 |
Correct |
385 ms |
94440 KB |
Output is correct |
57 |
Correct |
350 ms |
95368 KB |
Output is correct |
58 |
Correct |
359 ms |
93328 KB |
Output is correct |
59 |
Correct |
376 ms |
94356 KB |
Output is correct |
60 |
Correct |
249 ms |
86468 KB |
Output is correct |
61 |
Correct |
333 ms |
93468 KB |
Output is correct |
62 |
Correct |
352 ms |
94664 KB |
Output is correct |
63 |
Correct |
379 ms |
101840 KB |
Output is correct |
64 |
Correct |
374 ms |
101884 KB |
Output is correct |
65 |
Correct |
72 ms |
34432 KB |
Output is correct |
66 |
Correct |
249 ms |
84456 KB |
Output is correct |
67 |
Correct |
382 ms |
100468 KB |
Output is correct |
68 |
Correct |
304 ms |
100616 KB |
Output is correct |
69 |
Correct |
258 ms |
98868 KB |
Output is correct |
70 |
Correct |
388 ms |
100660 KB |
Output is correct |
71 |
Correct |
290 ms |
100296 KB |
Output is correct |
72 |
Correct |
281 ms |
100124 KB |
Output is correct |
73 |
Correct |
433 ms |
100548 KB |
Output is correct |
74 |
Correct |
217 ms |
99776 KB |
Output is correct |
75 |
Correct |
213 ms |
99636 KB |
Output is correct |
76 |
Correct |
311 ms |
100356 KB |
Output is correct |
77 |
Correct |
423 ms |
105156 KB |
Output is correct |
78 |
Correct |
383 ms |
98756 KB |
Output is correct |
79 |
Correct |
436 ms |
101576 KB |
Output is correct |
80 |
Correct |
411 ms |
96892 KB |
Output is correct |
81 |
Correct |
316 ms |
100804 KB |
Output is correct |
82 |
Correct |
439 ms |
96932 KB |
Output is correct |
83 |
Correct |
465 ms |
101556 KB |
Output is correct |
84 |
Correct |
441 ms |
100920 KB |
Output is correct |
85 |
Correct |
398 ms |
101064 KB |
Output is correct |
86 |
Correct |
387 ms |
100808 KB |
Output is correct |
87 |
Correct |
420 ms |
100804 KB |
Output is correct |
88 |
Correct |
424 ms |
102452 KB |
Output is correct |
89 |
Correct |
391 ms |
100548 KB |
Output is correct |
90 |
Correct |
440 ms |
105412 KB |
Output is correct |
91 |
Correct |
401 ms |
102856 KB |
Output is correct |
92 |
Correct |
395 ms |
101064 KB |
Output is correct |
93 |
Correct |
423 ms |
100780 KB |
Output is correct |
94 |
Correct |
425 ms |
102444 KB |
Output is correct |
95 |
Correct |
414 ms |
100808 KB |
Output is correct |
96 |
Correct |
422 ms |
105156 KB |
Output is correct |
97 |
Correct |
424 ms |
104388 KB |
Output is correct |
98 |
Correct |
422 ms |
104056 KB |
Output is correct |
99 |
Correct |
413 ms |
104332 KB |
Output is correct |
100 |
Correct |
424 ms |
105420 KB |
Output is correct |
101 |
Correct |
449 ms |
104268 KB |
Output is correct |
102 |
Correct |
427 ms |
105356 KB |
Output is correct |
103 |
Correct |
411 ms |
101156 KB |
Output is correct |