#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> ii;
#define f(i,a,b) for(ll i = a; i < b; i++)
#define fa(i,a,b) for(ll i = a; i >= b; i--)
const int N = 30005;
const ll inf = 1e18;
int n, m, b[N];
ll p[N], d[N];
vector <pair<ll,ll>> adj[N], v[N];
set <int> s[N];
void dij(int x){
f(i,0,m) d[i] = inf;
d[x] = 0;
priority_queue <ii, vector <ii>, greater<ii>> q;
q.push({0, x});
while(!q.empty()){
ii p = q.top();
q.pop();
ll d_v = p.first, v = p.second;
if(d_v != d[v]) continue;
for(auto wi: adj[v]){
ll u = wi.first, w = wi.second;
if(d[u] > d[v] + w){
d[u] = d[v] + w;
q.push({d[u], u});
}
}
}
}
int main(){
cin >> n >> m;
f(i,0,m){
cin >> b[i] >> p[i];
s[b[i]].insert(p[i]);
v[b[i]].push_back({p[i], i});
}
f(i,0,n){
int l = v[i].size();
f(j,0,l){
adj[v[i][j].second].push_back({v[i][(j+1)%l].second, 0});
}
}
f(i,0,n){
map <int, bool> us;
for(auto p: v[i]){
int pi = p.first, node = p.second;
if(us[pi]) continue;
us[pi] = 1;
for(ll x = i-pi; x >= 0; x -= pi){
for(auto u: v[x]){
adj[node].push_back({u.second, (i-x)/pi});
}
if(s[x].count(pi)) break;
}
}
}
fa(i,n-1,0){
map <int, bool> us;
for(auto p: v[i]){
int pi = p.first, node = p.second;
if(us[pi]) continue;
us[pi] = 1;
for(ll x = i+pi; x < n; x += pi){
for(auto u: v[x]){
adj[node].push_back({u.second, (x-i)/pi});
}
if(s[x].count(pi)) break;
}
}
}
dij(0);
cout << ((d[1] == inf) ? -1 : d[1]) << "\n";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3028 KB |
Output is correct |
3 |
Correct |
2 ms |
3028 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3028 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3028 KB |
Output is correct |
3 |
Correct |
2 ms |
3028 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
3 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3028 KB |
Output is correct |
8 |
Correct |
2 ms |
3028 KB |
Output is correct |
9 |
Correct |
2 ms |
3028 KB |
Output is correct |
10 |
Correct |
2 ms |
3284 KB |
Output is correct |
11 |
Correct |
6 ms |
5128 KB |
Output is correct |
12 |
Correct |
3 ms |
3284 KB |
Output is correct |
13 |
Correct |
3 ms |
3412 KB |
Output is correct |
14 |
Correct |
5 ms |
4436 KB |
Output is correct |
15 |
Correct |
6 ms |
4480 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3028 KB |
Output is correct |
3 |
Correct |
2 ms |
3128 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
3 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3028 KB |
Output is correct |
8 |
Correct |
2 ms |
3028 KB |
Output is correct |
9 |
Correct |
2 ms |
3028 KB |
Output is correct |
10 |
Correct |
2 ms |
3284 KB |
Output is correct |
11 |
Correct |
6 ms |
5076 KB |
Output is correct |
12 |
Correct |
3 ms |
3284 KB |
Output is correct |
13 |
Correct |
3 ms |
3412 KB |
Output is correct |
14 |
Correct |
6 ms |
4436 KB |
Output is correct |
15 |
Correct |
6 ms |
4436 KB |
Output is correct |
16 |
Correct |
3 ms |
3540 KB |
Output is correct |
17 |
Correct |
5 ms |
4180 KB |
Output is correct |
18 |
Correct |
3 ms |
3284 KB |
Output is correct |
19 |
Correct |
3 ms |
3156 KB |
Output is correct |
20 |
Correct |
4 ms |
3412 KB |
Output is correct |
21 |
Correct |
3 ms |
3284 KB |
Output is correct |
22 |
Correct |
3 ms |
3284 KB |
Output is correct |
23 |
Correct |
3 ms |
3284 KB |
Output is correct |
24 |
Correct |
5 ms |
3668 KB |
Output is correct |
25 |
Correct |
5 ms |
3540 KB |
Output is correct |
26 |
Correct |
4 ms |
3412 KB |
Output is correct |
27 |
Correct |
3 ms |
3284 KB |
Output is correct |
28 |
Correct |
4 ms |
3796 KB |
Output is correct |
29 |
Correct |
3 ms |
3284 KB |
Output is correct |
30 |
Correct |
2 ms |
3156 KB |
Output is correct |
31 |
Correct |
3 ms |
3156 KB |
Output is correct |
32 |
Correct |
2 ms |
3156 KB |
Output is correct |
33 |
Correct |
6 ms |
4436 KB |
Output is correct |
34 |
Correct |
6 ms |
4436 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3028 KB |
Output is correct |
3 |
Correct |
2 ms |
3124 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3028 KB |
Output is correct |
8 |
Correct |
2 ms |
3028 KB |
Output is correct |
9 |
Correct |
2 ms |
3028 KB |
Output is correct |
10 |
Correct |
2 ms |
3284 KB |
Output is correct |
11 |
Correct |
6 ms |
5076 KB |
Output is correct |
12 |
Correct |
3 ms |
3284 KB |
Output is correct |
13 |
Correct |
4 ms |
3412 KB |
Output is correct |
14 |
Correct |
6 ms |
4436 KB |
Output is correct |
15 |
Correct |
8 ms |
4436 KB |
Output is correct |
16 |
Correct |
5 ms |
3484 KB |
Output is correct |
17 |
Correct |
6 ms |
4180 KB |
Output is correct |
18 |
Correct |
3 ms |
3284 KB |
Output is correct |
19 |
Correct |
3 ms |
3156 KB |
Output is correct |
20 |
Correct |
3 ms |
3412 KB |
Output is correct |
21 |
Correct |
3 ms |
3284 KB |
Output is correct |
22 |
Correct |
2 ms |
3284 KB |
Output is correct |
23 |
Correct |
3 ms |
3284 KB |
Output is correct |
24 |
Correct |
4 ms |
3668 KB |
Output is correct |
25 |
Correct |
4 ms |
3540 KB |
Output is correct |
26 |
Correct |
3 ms |
3412 KB |
Output is correct |
27 |
Correct |
4 ms |
3284 KB |
Output is correct |
28 |
Correct |
4 ms |
3796 KB |
Output is correct |
29 |
Correct |
3 ms |
3284 KB |
Output is correct |
30 |
Correct |
2 ms |
3156 KB |
Output is correct |
31 |
Correct |
2 ms |
3156 KB |
Output is correct |
32 |
Correct |
2 ms |
3156 KB |
Output is correct |
33 |
Correct |
6 ms |
4436 KB |
Output is correct |
34 |
Correct |
7 ms |
4436 KB |
Output is correct |
35 |
Correct |
93 ms |
39636 KB |
Output is correct |
36 |
Correct |
10 ms |
5132 KB |
Output is correct |
37 |
Correct |
84 ms |
43608 KB |
Output is correct |
38 |
Correct |
107 ms |
53640 KB |
Output is correct |
39 |
Correct |
108 ms |
54604 KB |
Output is correct |
40 |
Correct |
128 ms |
54348 KB |
Output is correct |
41 |
Correct |
131 ms |
54040 KB |
Output is correct |
42 |
Correct |
21 ms |
6788 KB |
Output is correct |
43 |
Correct |
21 ms |
6352 KB |
Output is correct |
44 |
Correct |
19 ms |
6948 KB |
Output is correct |
45 |
Correct |
112 ms |
59540 KB |
Output is correct |
46 |
Correct |
129 ms |
59244 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3028 KB |
Output is correct |
3 |
Correct |
2 ms |
3028 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3028 KB |
Output is correct |
8 |
Correct |
2 ms |
3028 KB |
Output is correct |
9 |
Correct |
2 ms |
3028 KB |
Output is correct |
10 |
Correct |
4 ms |
3288 KB |
Output is correct |
11 |
Correct |
6 ms |
5076 KB |
Output is correct |
12 |
Correct |
3 ms |
3284 KB |
Output is correct |
13 |
Correct |
3 ms |
3412 KB |
Output is correct |
14 |
Correct |
6 ms |
4436 KB |
Output is correct |
15 |
Correct |
5 ms |
4436 KB |
Output is correct |
16 |
Correct |
4 ms |
3540 KB |
Output is correct |
17 |
Correct |
5 ms |
4180 KB |
Output is correct |
18 |
Correct |
3 ms |
3284 KB |
Output is correct |
19 |
Correct |
2 ms |
3156 KB |
Output is correct |
20 |
Correct |
3 ms |
3412 KB |
Output is correct |
21 |
Correct |
3 ms |
3284 KB |
Output is correct |
22 |
Correct |
2 ms |
3280 KB |
Output is correct |
23 |
Correct |
3 ms |
3284 KB |
Output is correct |
24 |
Correct |
5 ms |
3668 KB |
Output is correct |
25 |
Correct |
5 ms |
3540 KB |
Output is correct |
26 |
Correct |
4 ms |
3412 KB |
Output is correct |
27 |
Correct |
3 ms |
3304 KB |
Output is correct |
28 |
Correct |
4 ms |
3796 KB |
Output is correct |
29 |
Correct |
3 ms |
3284 KB |
Output is correct |
30 |
Correct |
3 ms |
3156 KB |
Output is correct |
31 |
Correct |
3 ms |
3156 KB |
Output is correct |
32 |
Correct |
3 ms |
3156 KB |
Output is correct |
33 |
Correct |
5 ms |
4436 KB |
Output is correct |
34 |
Correct |
8 ms |
4436 KB |
Output is correct |
35 |
Correct |
105 ms |
39664 KB |
Output is correct |
36 |
Correct |
9 ms |
5204 KB |
Output is correct |
37 |
Correct |
85 ms |
43672 KB |
Output is correct |
38 |
Correct |
113 ms |
53636 KB |
Output is correct |
39 |
Correct |
119 ms |
54692 KB |
Output is correct |
40 |
Correct |
119 ms |
54392 KB |
Output is correct |
41 |
Correct |
142 ms |
53940 KB |
Output is correct |
42 |
Correct |
21 ms |
6824 KB |
Output is correct |
43 |
Correct |
24 ms |
6356 KB |
Output is correct |
44 |
Correct |
27 ms |
7024 KB |
Output is correct |
45 |
Correct |
110 ms |
59632 KB |
Output is correct |
46 |
Correct |
129 ms |
59268 KB |
Output is correct |
47 |
Correct |
103 ms |
40284 KB |
Output is correct |
48 |
Correct |
40 ms |
10180 KB |
Output is correct |
49 |
Correct |
31 ms |
7976 KB |
Output is correct |
50 |
Correct |
20 ms |
6484 KB |
Output is correct |
51 |
Correct |
72 ms |
14020 KB |
Output is correct |
52 |
Correct |
77 ms |
15048 KB |
Output is correct |
53 |
Correct |
57 ms |
9876 KB |
Output is correct |
54 |
Correct |
2 ms |
3028 KB |
Output is correct |
55 |
Correct |
3 ms |
3028 KB |
Output is correct |
56 |
Correct |
41 ms |
8368 KB |
Output is correct |
57 |
Correct |
13 ms |
5004 KB |
Output is correct |
58 |
Correct |
19 ms |
6800 KB |
Output is correct |
59 |
Correct |
21 ms |
6736 KB |
Output is correct |
60 |
Correct |
25 ms |
7252 KB |
Output is correct |
61 |
Correct |
25 ms |
6972 KB |
Output is correct |
62 |
Correct |
56 ms |
16516 KB |
Output is correct |
63 |
Correct |
75 ms |
17664 KB |
Output is correct |
64 |
Correct |
109 ms |
16976 KB |
Output is correct |
65 |
Correct |
118 ms |
25848 KB |
Output is correct |
66 |
Correct |
154 ms |
59196 KB |
Output is correct |
67 |
Correct |
161 ms |
59260 KB |
Output is correct |