#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef vector<ll> vi;
typedef pair<ll,ll> ii;
typedef vector<ii> vii;
#define rep(i,a,b) for(int i = a; i < b; i++)
#define per(i,a,b) for(int i = a; i >= b; i--)
#define inf 9223372036854775807
#define all(x) x.begin(),x.end()
#define sz(x) (ll)(x).size()
#define trav(a,x) for(auto& a : x)
ll n,m;
vi b,p,vis,_,mindist;
vector<vi> dog;
int main(){
cin >> n >> m; b.assign(m,0); p.assign(m,0);
rep(i,0,m) cin >> b[i] >> p[i];
dog.assign(n,_);
rep(i,0,m) dog[b[i]].push_back(i);
vis.assign(n,0);
priority_queue<ii> pq;
pq.push(make_pair(0,b[0]));
mindist.assign(n,inf);
vector<set<ll> > jumps;
set<ll> __; jumps.assign(n,__);
rep(i,0,n) rep(j,0,sz(dog[i])){
jumps[i].insert(p[dog[i][j]]);
}
while (!pq.empty()){
ll dist = -pq.top().first, i = pq.top().second; pq.pop();
if (i == b[1]) {
cout << dist << endl;
exit(0);
}
if (vis[i]) continue;
vis[i] = 1;
trav(px,jumps[i]){
ll cur = i+px,cnt = 1;
while (cur < n) {
if (!vis[cur] && mindist[cur] > dist+cnt && sz(dog[cur]) > 0) {
pq.push(make_pair(-dist-cnt,cur));
mindist[cur] = dist+cnt;
}
cur += px; cnt++;
}
cur = i-px, cnt = 1;
while (cur >= 0){
if (!vis[cur] && mindist[cur] > dist+cnt && sz(dog[cur]) > 0) {
pq.push(make_pair(-dist-cnt,cur));
mindist[cur] = dist+cnt;
}
cur -= px; cnt++;
}
}
}
cout << -1 << endl;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
248 KB |
Output is correct |
2 |
Correct |
3 ms |
484 KB |
Output is correct |
3 |
Correct |
4 ms |
500 KB |
Output is correct |
4 |
Correct |
3 ms |
500 KB |
Output is correct |
5 |
Correct |
3 ms |
500 KB |
Output is correct |
6 |
Correct |
3 ms |
500 KB |
Output is correct |
7 |
Correct |
3 ms |
620 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
620 KB |
Output is correct |
2 |
Correct |
2 ms |
620 KB |
Output is correct |
3 |
Correct |
2 ms |
620 KB |
Output is correct |
4 |
Correct |
2 ms |
620 KB |
Output is correct |
5 |
Correct |
3 ms |
620 KB |
Output is correct |
6 |
Correct |
3 ms |
620 KB |
Output is correct |
7 |
Correct |
3 ms |
620 KB |
Output is correct |
8 |
Correct |
4 ms |
620 KB |
Output is correct |
9 |
Correct |
2 ms |
620 KB |
Output is correct |
10 |
Correct |
4 ms |
624 KB |
Output is correct |
11 |
Correct |
5 ms |
752 KB |
Output is correct |
12 |
Correct |
4 ms |
752 KB |
Output is correct |
13 |
Correct |
5 ms |
752 KB |
Output is correct |
14 |
Correct |
4 ms |
752 KB |
Output is correct |
15 |
Correct |
5 ms |
752 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
752 KB |
Output is correct |
2 |
Correct |
3 ms |
752 KB |
Output is correct |
3 |
Correct |
2 ms |
752 KB |
Output is correct |
4 |
Correct |
3 ms |
752 KB |
Output is correct |
5 |
Correct |
3 ms |
752 KB |
Output is correct |
6 |
Correct |
3 ms |
752 KB |
Output is correct |
7 |
Correct |
2 ms |
752 KB |
Output is correct |
8 |
Correct |
2 ms |
752 KB |
Output is correct |
9 |
Correct |
2 ms |
752 KB |
Output is correct |
10 |
Correct |
3 ms |
752 KB |
Output is correct |
11 |
Correct |
4 ms |
752 KB |
Output is correct |
12 |
Correct |
4 ms |
752 KB |
Output is correct |
13 |
Correct |
4 ms |
752 KB |
Output is correct |
14 |
Correct |
3 ms |
752 KB |
Output is correct |
15 |
Correct |
4 ms |
752 KB |
Output is correct |
16 |
Correct |
4 ms |
752 KB |
Output is correct |
17 |
Correct |
4 ms |
752 KB |
Output is correct |
18 |
Correct |
5 ms |
752 KB |
Output is correct |
19 |
Correct |
4 ms |
752 KB |
Output is correct |
20 |
Correct |
11 ms |
1004 KB |
Output is correct |
21 |
Correct |
5 ms |
1004 KB |
Output is correct |
22 |
Correct |
4 ms |
1004 KB |
Output is correct |
23 |
Correct |
5 ms |
1004 KB |
Output is correct |
24 |
Correct |
5 ms |
1004 KB |
Output is correct |
25 |
Correct |
5 ms |
1004 KB |
Output is correct |
26 |
Correct |
4 ms |
1004 KB |
Output is correct |
27 |
Correct |
4 ms |
1004 KB |
Output is correct |
28 |
Correct |
5 ms |
1004 KB |
Output is correct |
29 |
Correct |
5 ms |
1004 KB |
Output is correct |
30 |
Correct |
3 ms |
1004 KB |
Output is correct |
31 |
Correct |
3 ms |
1004 KB |
Output is correct |
32 |
Correct |
3 ms |
1004 KB |
Output is correct |
33 |
Correct |
5 ms |
1004 KB |
Output is correct |
34 |
Correct |
5 ms |
1004 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1004 KB |
Output is correct |
2 |
Correct |
2 ms |
1004 KB |
Output is correct |
3 |
Correct |
2 ms |
1004 KB |
Output is correct |
4 |
Correct |
2 ms |
1004 KB |
Output is correct |
5 |
Correct |
3 ms |
1004 KB |
Output is correct |
6 |
Correct |
2 ms |
1004 KB |
Output is correct |
7 |
Correct |
3 ms |
1004 KB |
Output is correct |
8 |
Correct |
2 ms |
1004 KB |
Output is correct |
9 |
Correct |
3 ms |
1004 KB |
Output is correct |
10 |
Correct |
3 ms |
1004 KB |
Output is correct |
11 |
Correct |
4 ms |
1004 KB |
Output is correct |
12 |
Correct |
4 ms |
1004 KB |
Output is correct |
13 |
Correct |
4 ms |
1004 KB |
Output is correct |
14 |
Correct |
6 ms |
1004 KB |
Output is correct |
15 |
Correct |
5 ms |
1004 KB |
Output is correct |
16 |
Correct |
2 ms |
1004 KB |
Output is correct |
17 |
Correct |
6 ms |
1004 KB |
Output is correct |
18 |
Correct |
5 ms |
1004 KB |
Output is correct |
19 |
Correct |
4 ms |
1004 KB |
Output is correct |
20 |
Correct |
15 ms |
1004 KB |
Output is correct |
21 |
Correct |
4 ms |
1004 KB |
Output is correct |
22 |
Correct |
4 ms |
1004 KB |
Output is correct |
23 |
Correct |
5 ms |
1004 KB |
Output is correct |
24 |
Correct |
5 ms |
1004 KB |
Output is correct |
25 |
Correct |
6 ms |
1004 KB |
Output is correct |
26 |
Correct |
4 ms |
1004 KB |
Output is correct |
27 |
Correct |
4 ms |
1004 KB |
Output is correct |
28 |
Correct |
5 ms |
1004 KB |
Output is correct |
29 |
Correct |
5 ms |
1004 KB |
Output is correct |
30 |
Correct |
3 ms |
1004 KB |
Output is correct |
31 |
Correct |
4 ms |
1004 KB |
Output is correct |
32 |
Correct |
3 ms |
1004 KB |
Output is correct |
33 |
Correct |
5 ms |
1004 KB |
Output is correct |
34 |
Correct |
5 ms |
1004 KB |
Output is correct |
35 |
Correct |
40 ms |
2684 KB |
Output is correct |
36 |
Correct |
8 ms |
2684 KB |
Output is correct |
37 |
Correct |
26 ms |
2684 KB |
Output is correct |
38 |
Correct |
29 ms |
3196 KB |
Output is correct |
39 |
Correct |
31 ms |
3196 KB |
Output is correct |
40 |
Correct |
33 ms |
3196 KB |
Output is correct |
41 |
Correct |
36 ms |
3196 KB |
Output is correct |
42 |
Correct |
25 ms |
3196 KB |
Output is correct |
43 |
Correct |
21 ms |
3196 KB |
Output is correct |
44 |
Correct |
40 ms |
3196 KB |
Output is correct |
45 |
Correct |
31 ms |
3196 KB |
Output is correct |
46 |
Correct |
30 ms |
3196 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3196 KB |
Output is correct |
2 |
Correct |
2 ms |
3196 KB |
Output is correct |
3 |
Correct |
2 ms |
3196 KB |
Output is correct |
4 |
Correct |
3 ms |
3196 KB |
Output is correct |
5 |
Correct |
3 ms |
3196 KB |
Output is correct |
6 |
Correct |
2 ms |
3196 KB |
Output is correct |
7 |
Correct |
3 ms |
3196 KB |
Output is correct |
8 |
Correct |
2 ms |
3196 KB |
Output is correct |
9 |
Correct |
2 ms |
3196 KB |
Output is correct |
10 |
Correct |
4 ms |
3196 KB |
Output is correct |
11 |
Correct |
3 ms |
3196 KB |
Output is correct |
12 |
Correct |
3 ms |
3196 KB |
Output is correct |
13 |
Correct |
4 ms |
3196 KB |
Output is correct |
14 |
Correct |
4 ms |
3196 KB |
Output is correct |
15 |
Correct |
4 ms |
3196 KB |
Output is correct |
16 |
Correct |
4 ms |
3196 KB |
Output is correct |
17 |
Correct |
5 ms |
3196 KB |
Output is correct |
18 |
Correct |
3 ms |
3196 KB |
Output is correct |
19 |
Correct |
4 ms |
3196 KB |
Output is correct |
20 |
Correct |
14 ms |
3196 KB |
Output is correct |
21 |
Correct |
3 ms |
3196 KB |
Output is correct |
22 |
Correct |
3 ms |
3196 KB |
Output is correct |
23 |
Correct |
3 ms |
3196 KB |
Output is correct |
24 |
Correct |
5 ms |
3196 KB |
Output is correct |
25 |
Correct |
4 ms |
3196 KB |
Output is correct |
26 |
Correct |
4 ms |
3196 KB |
Output is correct |
27 |
Correct |
4 ms |
3196 KB |
Output is correct |
28 |
Correct |
6 ms |
3196 KB |
Output is correct |
29 |
Correct |
4 ms |
3196 KB |
Output is correct |
30 |
Correct |
3 ms |
3196 KB |
Output is correct |
31 |
Correct |
3 ms |
3196 KB |
Output is correct |
32 |
Correct |
4 ms |
3196 KB |
Output is correct |
33 |
Correct |
5 ms |
3196 KB |
Output is correct |
34 |
Correct |
5 ms |
3196 KB |
Output is correct |
35 |
Correct |
27 ms |
3196 KB |
Output is correct |
36 |
Correct |
6 ms |
3196 KB |
Output is correct |
37 |
Correct |
17 ms |
3196 KB |
Output is correct |
38 |
Correct |
32 ms |
3196 KB |
Output is correct |
39 |
Correct |
35 ms |
3196 KB |
Output is correct |
40 |
Correct |
32 ms |
3196 KB |
Output is correct |
41 |
Correct |
38 ms |
3196 KB |
Output is correct |
42 |
Correct |
23 ms |
3196 KB |
Output is correct |
43 |
Correct |
23 ms |
3196 KB |
Output is correct |
44 |
Correct |
29 ms |
3196 KB |
Output is correct |
45 |
Correct |
28 ms |
3196 KB |
Output is correct |
46 |
Correct |
29 ms |
3196 KB |
Output is correct |
47 |
Correct |
33 ms |
4760 KB |
Output is correct |
48 |
Correct |
33 ms |
4760 KB |
Output is correct |
49 |
Correct |
29 ms |
4760 KB |
Output is correct |
50 |
Correct |
20 ms |
4760 KB |
Output is correct |
51 |
Correct |
76 ms |
6772 KB |
Output is correct |
52 |
Correct |
57 ms |
6868 KB |
Output is correct |
53 |
Correct |
44 ms |
6868 KB |
Output is correct |
54 |
Correct |
6 ms |
6868 KB |
Output is correct |
55 |
Correct |
5 ms |
6868 KB |
Output is correct |
56 |
Execution timed out |
1052 ms |
6868 KB |
Time limit exceeded |
57 |
Halted |
0 ms |
0 KB |
- |