#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef long double ld;
const ll MOD=1e9+7;
const ll N=3e4+5;
const ll INF=(1LL<<60);
const ld pi=3.14159265359;
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(a) (ll)a.size()
ll n,m,b[N],p[N],x,y,dis[N];
vector<ll> P[N],tmp;
vector<pll> v[N];
vector<vector<ll> > lis;
priority_queue<pll,vector<pll>,greater<pll> > pq;
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);
cin>>n>>m;
REP(i,m){
cin>>b[i]>>p[i];
P[p[i]].pb(b[i]);
}
for(ll step=1;step<N;++step){
if(!SZ(P[step]))continue;
lis.clear();lis.resize(step);
tmp.clear();
for(auto i:P[step]){
lis[i%step].pb(i);
tmp.pb(i%step);
}
sort(tmp.begin(),tmp.end());
tmp.resize(unique(tmp.begin(),tmp.end())-tmp.begin());
for(auto i:tmp){
sort(lis[i].begin(),lis[i].end());
for(ll j=1;j<SZ(lis[i]);++j){
x=lis[i][j-1],y=lis[i][j];
for(ll ii=x;ii<=y;ii+=step){
v[x].pb(mp(ii,(ii-x)/step));
v[y].pb(mp(ii,(y-ii)/step));
}
}
for(ll ii=lis[i].back()+step;ii<N;ii+=step)x=lis[i].back(),v[x].pb(mp(ii,(ii-x)/step));
for(ll ii=lis[i][0]-step;ii>=0;ii-=step)x=lis[i][0],v[x].pb(mp(ii,(x-ii)/step));
}
}
REP(i,N)dis[i]=INF;
pq.push(mp(dis[b[0]]=0,b[0]));
while(SZ(pq)){
x=pq.top().Y;y=pq.top().X;pq.pop();
if(dis[x]<y)continue;
for(auto j:v[x])if(dis[j.X]>dis[x]+j.Y)dis[j.X]=dis[x]+j.Y,pq.push(mp(dis[j.X],j.X));
}
cout<<(dis[b[1]]==INF?-1:dis[b[1]])<<"\n";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
3700 KB |
Output is correct |
2 |
Correct |
10 ms |
3188 KB |
Output is correct |
3 |
Correct |
7 ms |
2552 KB |
Output is correct |
4 |
Correct |
6 ms |
2296 KB |
Output is correct |
5 |
Correct |
13 ms |
4336 KB |
Output is correct |
6 |
Correct |
12 ms |
4084 KB |
Output is correct |
7 |
Correct |
10 ms |
3188 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
3700 KB |
Output is correct |
2 |
Correct |
10 ms |
3316 KB |
Output is correct |
3 |
Correct |
7 ms |
2552 KB |
Output is correct |
4 |
Correct |
6 ms |
2296 KB |
Output is correct |
5 |
Correct |
13 ms |
4340 KB |
Output is correct |
6 |
Correct |
12 ms |
4084 KB |
Output is correct |
7 |
Correct |
10 ms |
3188 KB |
Output is correct |
8 |
Correct |
14 ms |
3960 KB |
Output is correct |
9 |
Correct |
19 ms |
5136 KB |
Output is correct |
10 |
Correct |
40 ms |
12464 KB |
Output is correct |
11 |
Correct |
64 ms |
28640 KB |
Output is correct |
12 |
Correct |
19 ms |
5100 KB |
Output is correct |
13 |
Correct |
10 ms |
3308 KB |
Output is correct |
14 |
Correct |
117 ms |
44248 KB |
Output is correct |
15 |
Correct |
112 ms |
43996 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
3700 KB |
Output is correct |
2 |
Correct |
10 ms |
3192 KB |
Output is correct |
3 |
Correct |
7 ms |
2552 KB |
Output is correct |
4 |
Correct |
6 ms |
2296 KB |
Output is correct |
5 |
Correct |
14 ms |
4340 KB |
Output is correct |
6 |
Correct |
12 ms |
4084 KB |
Output is correct |
7 |
Correct |
10 ms |
3188 KB |
Output is correct |
8 |
Correct |
15 ms |
3960 KB |
Output is correct |
9 |
Correct |
19 ms |
5136 KB |
Output is correct |
10 |
Correct |
39 ms |
12464 KB |
Output is correct |
11 |
Correct |
63 ms |
28644 KB |
Output is correct |
12 |
Correct |
18 ms |
5100 KB |
Output is correct |
13 |
Correct |
10 ms |
3440 KB |
Output is correct |
14 |
Correct |
113 ms |
44252 KB |
Output is correct |
15 |
Correct |
117 ms |
43996 KB |
Output is correct |
16 |
Correct |
18 ms |
12404 KB |
Output is correct |
17 |
Correct |
44 ms |
15480 KB |
Output is correct |
18 |
Correct |
11 ms |
4472 KB |
Output is correct |
19 |
Correct |
9 ms |
3572 KB |
Output is correct |
20 |
Correct |
10 ms |
3440 KB |
Output is correct |
21 |
Correct |
12 ms |
4980 KB |
Output is correct |
22 |
Correct |
10 ms |
4084 KB |
Output is correct |
23 |
Correct |
24 ms |
5744 KB |
Output is correct |
24 |
Correct |
27 ms |
7184 KB |
Output is correct |
25 |
Correct |
22 ms |
5104 KB |
Output is correct |
26 |
Correct |
22 ms |
5268 KB |
Output is correct |
27 |
Correct |
20 ms |
5484 KB |
Output is correct |
28 |
Correct |
20 ms |
8948 KB |
Output is correct |
29 |
Correct |
67 ms |
22984 KB |
Output is correct |
30 |
Correct |
28 ms |
9704 KB |
Output is correct |
31 |
Correct |
36 ms |
13356 KB |
Output is correct |
32 |
Correct |
28 ms |
10372 KB |
Output is correct |
33 |
Correct |
112 ms |
43336 KB |
Output is correct |
34 |
Correct |
113 ms |
43460 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
3700 KB |
Output is correct |
2 |
Correct |
10 ms |
3188 KB |
Output is correct |
3 |
Correct |
7 ms |
2552 KB |
Output is correct |
4 |
Correct |
7 ms |
2296 KB |
Output is correct |
5 |
Correct |
13 ms |
4340 KB |
Output is correct |
6 |
Correct |
12 ms |
4080 KB |
Output is correct |
7 |
Correct |
10 ms |
3316 KB |
Output is correct |
8 |
Correct |
14 ms |
3960 KB |
Output is correct |
9 |
Correct |
20 ms |
5136 KB |
Output is correct |
10 |
Correct |
40 ms |
12460 KB |
Output is correct |
11 |
Correct |
64 ms |
28640 KB |
Output is correct |
12 |
Correct |
19 ms |
5096 KB |
Output is correct |
13 |
Correct |
11 ms |
3436 KB |
Output is correct |
14 |
Correct |
115 ms |
44252 KB |
Output is correct |
15 |
Correct |
113 ms |
43988 KB |
Output is correct |
16 |
Correct |
18 ms |
12280 KB |
Output is correct |
17 |
Correct |
46 ms |
15480 KB |
Output is correct |
18 |
Correct |
11 ms |
4472 KB |
Output is correct |
19 |
Correct |
12 ms |
3572 KB |
Output is correct |
20 |
Correct |
10 ms |
3440 KB |
Output is correct |
21 |
Correct |
14 ms |
5104 KB |
Output is correct |
22 |
Correct |
10 ms |
3956 KB |
Output is correct |
23 |
Correct |
23 ms |
5744 KB |
Output is correct |
24 |
Correct |
28 ms |
7316 KB |
Output is correct |
25 |
Correct |
24 ms |
5104 KB |
Output is correct |
26 |
Correct |
22 ms |
5392 KB |
Output is correct |
27 |
Correct |
19 ms |
5484 KB |
Output is correct |
28 |
Correct |
21 ms |
8948 KB |
Output is correct |
29 |
Correct |
71 ms |
22968 KB |
Output is correct |
30 |
Correct |
28 ms |
9708 KB |
Output is correct |
31 |
Correct |
40 ms |
13356 KB |
Output is correct |
32 |
Correct |
31 ms |
10300 KB |
Output is correct |
33 |
Correct |
116 ms |
43336 KB |
Output is correct |
34 |
Correct |
118 ms |
43496 KB |
Output is correct |
35 |
Correct |
101 ms |
47236 KB |
Output is correct |
36 |
Correct |
45 ms |
13936 KB |
Output is correct |
37 |
Correct |
121 ms |
56848 KB |
Output is correct |
38 |
Correct |
114 ms |
54888 KB |
Output is correct |
39 |
Correct |
123 ms |
54164 KB |
Output is correct |
40 |
Correct |
121 ms |
54300 KB |
Output is correct |
41 |
Correct |
118 ms |
53948 KB |
Output is correct |
42 |
Correct |
33 ms |
7424 KB |
Output is correct |
43 |
Correct |
32 ms |
7548 KB |
Output is correct |
44 |
Correct |
19 ms |
5612 KB |
Output is correct |
45 |
Correct |
276 ms |
140084 KB |
Output is correct |
46 |
Correct |
284 ms |
140264 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
3828 KB |
Output is correct |
2 |
Correct |
10 ms |
3188 KB |
Output is correct |
3 |
Correct |
7 ms |
2556 KB |
Output is correct |
4 |
Correct |
7 ms |
2300 KB |
Output is correct |
5 |
Correct |
14 ms |
4340 KB |
Output is correct |
6 |
Correct |
12 ms |
4084 KB |
Output is correct |
7 |
Correct |
10 ms |
3184 KB |
Output is correct |
8 |
Correct |
17 ms |
3964 KB |
Output is correct |
9 |
Correct |
19 ms |
5132 KB |
Output is correct |
10 |
Correct |
40 ms |
12464 KB |
Output is correct |
11 |
Correct |
64 ms |
28640 KB |
Output is correct |
12 |
Correct |
18 ms |
5096 KB |
Output is correct |
13 |
Correct |
18 ms |
3440 KB |
Output is correct |
14 |
Correct |
124 ms |
44252 KB |
Output is correct |
15 |
Correct |
125 ms |
43984 KB |
Output is correct |
16 |
Correct |
18 ms |
12284 KB |
Output is correct |
17 |
Correct |
46 ms |
15480 KB |
Output is correct |
18 |
Correct |
11 ms |
4472 KB |
Output is correct |
19 |
Correct |
9 ms |
3572 KB |
Output is correct |
20 |
Correct |
10 ms |
3440 KB |
Output is correct |
21 |
Correct |
12 ms |
4976 KB |
Output is correct |
22 |
Correct |
10 ms |
3956 KB |
Output is correct |
23 |
Correct |
21 ms |
5744 KB |
Output is correct |
24 |
Correct |
30 ms |
7184 KB |
Output is correct |
25 |
Correct |
22 ms |
5100 KB |
Output is correct |
26 |
Correct |
22 ms |
5392 KB |
Output is correct |
27 |
Correct |
20 ms |
5480 KB |
Output is correct |
28 |
Correct |
20 ms |
9076 KB |
Output is correct |
29 |
Correct |
67 ms |
22988 KB |
Output is correct |
30 |
Correct |
28 ms |
9708 KB |
Output is correct |
31 |
Correct |
36 ms |
13356 KB |
Output is correct |
32 |
Correct |
39 ms |
10380 KB |
Output is correct |
33 |
Correct |
112 ms |
43460 KB |
Output is correct |
34 |
Correct |
116 ms |
43588 KB |
Output is correct |
35 |
Correct |
97 ms |
47256 KB |
Output is correct |
36 |
Correct |
42 ms |
13940 KB |
Output is correct |
37 |
Correct |
110 ms |
56748 KB |
Output is correct |
38 |
Correct |
109 ms |
54920 KB |
Output is correct |
39 |
Correct |
110 ms |
54292 KB |
Output is correct |
40 |
Correct |
112 ms |
54320 KB |
Output is correct |
41 |
Correct |
114 ms |
53956 KB |
Output is correct |
42 |
Correct |
28 ms |
7424 KB |
Output is correct |
43 |
Correct |
29 ms |
7688 KB |
Output is correct |
44 |
Correct |
17 ms |
5612 KB |
Output is correct |
45 |
Correct |
269 ms |
140092 KB |
Output is correct |
46 |
Correct |
263 ms |
140268 KB |
Output is correct |
47 |
Correct |
105 ms |
43248 KB |
Output is correct |
48 |
Correct |
990 ms |
10292 KB |
Output is correct |
49 |
Execution timed out |
1066 ms |
8744 KB |
Time limit exceeded |
50 |
Halted |
0 ms |
0 KB |
- |