#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int mxM = (int)1e5+2;
const ll LINF = (ll)1e18;
using pii = pair<ll,int>;
ll n, m, dis[mxM], seg[mxM*2];
struct Project{ int t, l, r, c; } a[mxM];
priority_queue<pii,vector<pii>,greater<pii>> pq;
void upd(int x, int p=0, int l=0, int r=m-1){
if(l==r){ seg[p] = a[l].l+a[l].t; return; }
int mid = (l+r)/2; int rp = p+2*(mid-l+1);
if(x<=mid) upd(x,p+1,l,mid);
else upd(x,rp,mid+1,r);
seg[p] = min(seg[p+1],seg[rp]);
}
void query(int i, int j, ll k, int p=0, int l=0, int r=m-1){
if(i<a[l].l-a[l].t or j < seg[p]) return;
if(l==r){
if(dis[l]==LINF) dis[l] = k+a[l].c, pq.push({dis[l],l});
seg[p]=LINF; return;
}
int mid = (l+r)/2; int rp = p+2*(mid-l+1);
query(i,j,k,p+1,l,mid); query(i,j,k,rp,mid+1,r);
seg[p] = min(seg[p+1],seg[rp]);
}
int32_t main() {
ios_base::sync_with_stdio(false); cin.tie(0);
cin >> n >> m;
for(int i = 0; i < m; i++)
cin >> a[i].t >> a[i].l >> a[i].r >> a[i].c;
sort(a,a+m,[&](Project x, Project y){
if(x.l-x.t==y.l-y.t) return x.l+x.t < y.l+y.t;
return x.l-x.t < y.l-y.t;
});
fill(dis,dis+m,LINF); fill(seg,seg+2*m,LINF);
for(int i = 0; i < m; i++) if(a[i].l==1)
dis[i]=a[i].c, pq.push({a[i].c,i});
for(int i = 0; i < m; i++) upd(i);
while(!pq.empty()){
auto [D,s] = pq.top(); pq.pop();
query(a[s].r-a[s].t+1, a[s].r+a[s].t+1, D);
}
ll ans = LINF;
for(int i = 0; i < m; i++)
if(a[i].r==n) ans=min(ans,dis[i]);
cout << (ans==LINF?-1:ans);
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
75 ms |
4160 KB |
Output is correct |
| 2 |
Correct |
84 ms |
5620 KB |
Output is correct |
| 3 |
Correct |
78 ms |
6420 KB |
Output is correct |
| 4 |
Correct |
75 ms |
6260 KB |
Output is correct |
| 5 |
Correct |
68 ms |
7740 KB |
Output is correct |
| 6 |
Correct |
72 ms |
5796 KB |
Output is correct |
| 7 |
Correct |
68 ms |
5636 KB |
Output is correct |
| 8 |
Correct |
53 ms |
5644 KB |
Output is correct |
| 9 |
Correct |
59 ms |
5552 KB |
Output is correct |
| 10 |
Correct |
53 ms |
5576 KB |
Output is correct |
| 11 |
Correct |
80 ms |
7800 KB |
Output is correct |
| 12 |
Correct |
79 ms |
7720 KB |
Output is correct |
| 13 |
Correct |
79 ms |
7752 KB |
Output is correct |
| 14 |
Correct |
71 ms |
7728 KB |
Output is correct |
| 15 |
Correct |
64 ms |
5652 KB |
Output is correct |
| 16 |
Correct |
65 ms |
5580 KB |
Output is correct |
| 17 |
Correct |
64 ms |
5664 KB |
Output is correct |
| 18 |
Correct |
71 ms |
7760 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
1 ms |
328 KB |
Output is correct |
| 9 |
Correct |
1 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
336 KB |
Output is correct |
| 12 |
Correct |
1 ms |
328 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
328 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
1 ms |
328 KB |
Output is correct |
| 9 |
Correct |
1 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
336 KB |
Output is correct |
| 12 |
Correct |
1 ms |
328 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
328 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
4 ms |
700 KB |
Output is correct |
| 21 |
Correct |
4 ms |
724 KB |
Output is correct |
| 22 |
Correct |
5 ms |
724 KB |
Output is correct |
| 23 |
Correct |
4 ms |
596 KB |
Output is correct |
| 24 |
Correct |
4 ms |
852 KB |
Output is correct |
| 25 |
Correct |
5 ms |
724 KB |
Output is correct |
| 26 |
Correct |
4 ms |
724 KB |
Output is correct |
| 27 |
Correct |
4 ms |
692 KB |
Output is correct |
| 28 |
Correct |
5 ms |
852 KB |
Output is correct |
| 29 |
Correct |
4 ms |
704 KB |
Output is correct |
| 30 |
Correct |
3 ms |
724 KB |
Output is correct |
| 31 |
Correct |
3 ms |
724 KB |
Output is correct |
| 32 |
Correct |
4 ms |
832 KB |
Output is correct |
| 33 |
Correct |
5 ms |
852 KB |
Output is correct |
| 34 |
Correct |
4 ms |
600 KB |
Output is correct |
| 35 |
Correct |
4 ms |
852 KB |
Output is correct |
| 36 |
Correct |
4 ms |
852 KB |
Output is correct |
| 37 |
Correct |
3 ms |
596 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
75 ms |
4160 KB |
Output is correct |
| 2 |
Correct |
84 ms |
5620 KB |
Output is correct |
| 3 |
Correct |
78 ms |
6420 KB |
Output is correct |
| 4 |
Correct |
75 ms |
6260 KB |
Output is correct |
| 5 |
Correct |
68 ms |
7740 KB |
Output is correct |
| 6 |
Correct |
72 ms |
5796 KB |
Output is correct |
| 7 |
Correct |
68 ms |
5636 KB |
Output is correct |
| 8 |
Correct |
53 ms |
5644 KB |
Output is correct |
| 9 |
Correct |
59 ms |
5552 KB |
Output is correct |
| 10 |
Correct |
53 ms |
5576 KB |
Output is correct |
| 11 |
Correct |
80 ms |
7800 KB |
Output is correct |
| 12 |
Correct |
79 ms |
7720 KB |
Output is correct |
| 13 |
Correct |
79 ms |
7752 KB |
Output is correct |
| 14 |
Correct |
71 ms |
7728 KB |
Output is correct |
| 15 |
Correct |
64 ms |
5652 KB |
Output is correct |
| 16 |
Correct |
65 ms |
5580 KB |
Output is correct |
| 17 |
Correct |
64 ms |
5664 KB |
Output is correct |
| 18 |
Correct |
71 ms |
7760 KB |
Output is correct |
| 19 |
Correct |
0 ms |
340 KB |
Output is correct |
| 20 |
Correct |
0 ms |
212 KB |
Output is correct |
| 21 |
Correct |
0 ms |
340 KB |
Output is correct |
| 22 |
Correct |
1 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
340 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
340 KB |
Output is correct |
| 26 |
Correct |
1 ms |
328 KB |
Output is correct |
| 27 |
Correct |
1 ms |
340 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
336 KB |
Output is correct |
| 30 |
Correct |
1 ms |
328 KB |
Output is correct |
| 31 |
Correct |
1 ms |
332 KB |
Output is correct |
| 32 |
Correct |
1 ms |
328 KB |
Output is correct |
| 33 |
Correct |
1 ms |
340 KB |
Output is correct |
| 34 |
Correct |
1 ms |
340 KB |
Output is correct |
| 35 |
Correct |
1 ms |
340 KB |
Output is correct |
| 36 |
Correct |
1 ms |
332 KB |
Output is correct |
| 37 |
Correct |
1 ms |
332 KB |
Output is correct |
| 38 |
Correct |
4 ms |
700 KB |
Output is correct |
| 39 |
Correct |
4 ms |
724 KB |
Output is correct |
| 40 |
Correct |
5 ms |
724 KB |
Output is correct |
| 41 |
Correct |
4 ms |
596 KB |
Output is correct |
| 42 |
Correct |
4 ms |
852 KB |
Output is correct |
| 43 |
Correct |
5 ms |
724 KB |
Output is correct |
| 44 |
Correct |
4 ms |
724 KB |
Output is correct |
| 45 |
Correct |
4 ms |
692 KB |
Output is correct |
| 46 |
Correct |
5 ms |
852 KB |
Output is correct |
| 47 |
Correct |
4 ms |
704 KB |
Output is correct |
| 48 |
Correct |
3 ms |
724 KB |
Output is correct |
| 49 |
Correct |
3 ms |
724 KB |
Output is correct |
| 50 |
Correct |
4 ms |
832 KB |
Output is correct |
| 51 |
Correct |
5 ms |
852 KB |
Output is correct |
| 52 |
Correct |
4 ms |
600 KB |
Output is correct |
| 53 |
Correct |
4 ms |
852 KB |
Output is correct |
| 54 |
Correct |
4 ms |
852 KB |
Output is correct |
| 55 |
Correct |
3 ms |
596 KB |
Output is correct |
| 56 |
Correct |
71 ms |
6804 KB |
Output is correct |
| 57 |
Correct |
79 ms |
6348 KB |
Output is correct |
| 58 |
Correct |
81 ms |
5548 KB |
Output is correct |
| 59 |
Correct |
81 ms |
5576 KB |
Output is correct |
| 60 |
Correct |
85 ms |
5708 KB |
Output is correct |
| 61 |
Correct |
99 ms |
5580 KB |
Output is correct |
| 62 |
Correct |
82 ms |
6796 KB |
Output is correct |
| 63 |
Correct |
85 ms |
5564 KB |
Output is correct |
| 64 |
Correct |
106 ms |
5740 KB |
Output is correct |
| 65 |
Correct |
80 ms |
5648 KB |
Output is correct |
| 66 |
Correct |
75 ms |
5636 KB |
Output is correct |
| 67 |
Correct |
86 ms |
5760 KB |
Output is correct |
| 68 |
Correct |
87 ms |
5632 KB |
Output is correct |
| 69 |
Correct |
91 ms |
5548 KB |
Output is correct |
| 70 |
Correct |
91 ms |
5776 KB |
Output is correct |
| 71 |
Correct |
88 ms |
5560 KB |
Output is correct |
| 72 |
Correct |
91 ms |
5632 KB |
Output is correct |
| 73 |
Correct |
90 ms |
5708 KB |
Output is correct |
| 74 |
Correct |
62 ms |
5588 KB |
Output is correct |
| 75 |
Correct |
58 ms |
5608 KB |
Output is correct |
| 76 |
Correct |
79 ms |
7764 KB |
Output is correct |
| 77 |
Correct |
88 ms |
7752 KB |
Output is correct |
| 78 |
Correct |
88 ms |
7816 KB |
Output is correct |
| 79 |
Correct |
92 ms |
5648 KB |
Output is correct |
| 80 |
Correct |
67 ms |
5620 KB |
Output is correct |
| 81 |
Correct |
65 ms |
5572 KB |
Output is correct |
| 82 |
Correct |
77 ms |
5832 KB |
Output is correct |
| 83 |
Correct |
77 ms |
5756 KB |
Output is correct |
| 84 |
Correct |
98 ms |
5576 KB |
Output is correct |
| 85 |
Correct |
84 ms |
5624 KB |
Output is correct |
| 86 |
Correct |
74 ms |
5672 KB |
Output is correct |
| 87 |
Correct |
77 ms |
5628 KB |
Output is correct |
| 88 |
Correct |
83 ms |
5712 KB |
Output is correct |
| 89 |
Correct |
81 ms |
5620 KB |
Output is correct |
| 90 |
Correct |
97 ms |
7756 KB |
Output is correct |
| 91 |
Correct |
75 ms |
6772 KB |
Output is correct |
| 92 |
Correct |
77 ms |
5548 KB |
Output is correct |
| 93 |
Correct |
100 ms |
5696 KB |
Output is correct |
| 94 |
Correct |
77 ms |
5828 KB |
Output is correct |
| 95 |
Correct |
93 ms |
5576 KB |
Output is correct |
| 96 |
Correct |
87 ms |
7800 KB |
Output is correct |
| 97 |
Correct |
84 ms |
7752 KB |
Output is correct |
| 98 |
Correct |
81 ms |
7852 KB |
Output is correct |
| 99 |
Correct |
84 ms |
7764 KB |
Output is correct |
| 100 |
Correct |
83 ms |
7736 KB |
Output is correct |
| 101 |
Correct |
84 ms |
7868 KB |
Output is correct |
| 102 |
Correct |
79 ms |
7784 KB |
Output is correct |
| 103 |
Correct |
71 ms |
5976 KB |
Output is correct |
