#include <bits/stdc++.h>
#include <iomanip>
using namespace std;
#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
#define fast ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
const int mod=1e9+7;
const int inf=1e18+7;
const int ninf=(-1)*inf;
const int N=2e3+7;
vector <pii> adj[N];
void solve()
{
int n,m;
cin>>n>>m;
vector <int> b(m),p(m);
for(int i=0;i<m;i++)
{
cin>>b[i]>>p[i];
}
vector <vector <int>> dist(m,vector <int>(m,inf));
for(int i=0;i<m;i++)
{
for(int j=0;j<m;j++)
{
if(i==j)
{
dist[i][i] = 0;
continue;
}
if(abs(b[i]-b[j])%p[i]==0)
{
dist[i][j] = min(dist[i][j],abs(b[i]-b[j])/p[i]);
adj[i].push_back({j,dist[i][j]});
}
}
}
vector <int> d(m,inf);
d[0] = 0;
priority_queue <pii,vector <pii> , greater <pii>> pq;
pq.push({0,0});
while(!pq.empty())
{
pii cur = pq.top();
pq.pop();
int u = cur.ss;
int du = cur.ff;
for(auto it:adj[u])
{
if(du + it.ss < d[it.ff])
{
d[it.ff] = du + it.ss;
pq.push({d[it.ff],it.ff});
}
}
}
if(d[1] == inf)
{
cout << -1 << "\n";
return;
}
cout << d[1] << "\n";
}
signed main(){
fast
int t=1;
//cin>>t;
while(t--)
solve();
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
344 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
2 ms |
1884 KB |
Output is correct |
11 |
Correct |
39 ms |
36176 KB |
Output is correct |
12 |
Correct |
88 ms |
95772 KB |
Output is correct |
13 |
Correct |
86 ms |
96036 KB |
Output is correct |
14 |
Correct |
37 ms |
34640 KB |
Output is correct |
15 |
Correct |
37 ms |
34732 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
1 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
372 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
2 ms |
1884 KB |
Output is correct |
11 |
Correct |
41 ms |
36088 KB |
Output is correct |
12 |
Correct |
86 ms |
95572 KB |
Output is correct |
13 |
Correct |
89 ms |
96160 KB |
Output is correct |
14 |
Correct |
40 ms |
34644 KB |
Output is correct |
15 |
Correct |
38 ms |
34852 KB |
Output is correct |
16 |
Correct |
6 ms |
6492 KB |
Output is correct |
17 |
Correct |
28 ms |
26644 KB |
Output is correct |
18 |
Correct |
8 ms |
8536 KB |
Output is correct |
19 |
Correct |
3 ms |
2908 KB |
Output is correct |
20 |
Correct |
85 ms |
95920 KB |
Output is correct |
21 |
Correct |
11 ms |
11356 KB |
Output is correct |
22 |
Correct |
4 ms |
4444 KB |
Output is correct |
23 |
Correct |
7 ms |
7772 KB |
Output is correct |
24 |
Correct |
29 ms |
28792 KB |
Output is correct |
25 |
Correct |
31 ms |
32092 KB |
Output is correct |
26 |
Correct |
81 ms |
90120 KB |
Output is correct |
27 |
Correct |
82 ms |
91968 KB |
Output is correct |
28 |
Correct |
31 ms |
32336 KB |
Output is correct |
29 |
Correct |
5 ms |
5372 KB |
Output is correct |
30 |
Correct |
1 ms |
600 KB |
Output is correct |
31 |
Correct |
3 ms |
3420 KB |
Output is correct |
32 |
Correct |
2 ms |
2396 KB |
Output is correct |
33 |
Correct |
38 ms |
34848 KB |
Output is correct |
34 |
Correct |
38 ms |
34904 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
372 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
508 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
2 ms |
1880 KB |
Output is correct |
11 |
Correct |
39 ms |
36180 KB |
Output is correct |
12 |
Correct |
85 ms |
95572 KB |
Output is correct |
13 |
Correct |
85 ms |
96084 KB |
Output is correct |
14 |
Correct |
38 ms |
34640 KB |
Output is correct |
15 |
Correct |
37 ms |
34788 KB |
Output is correct |
16 |
Correct |
6 ms |
6492 KB |
Output is correct |
17 |
Correct |
32 ms |
26448 KB |
Output is correct |
18 |
Correct |
8 ms |
8288 KB |
Output is correct |
19 |
Correct |
3 ms |
2908 KB |
Output is correct |
20 |
Correct |
85 ms |
96084 KB |
Output is correct |
21 |
Correct |
12 ms |
11356 KB |
Output is correct |
22 |
Correct |
5 ms |
4440 KB |
Output is correct |
23 |
Correct |
7 ms |
7772 KB |
Output is correct |
24 |
Correct |
28 ms |
28764 KB |
Output is correct |
25 |
Correct |
30 ms |
32216 KB |
Output is correct |
26 |
Correct |
80 ms |
90096 KB |
Output is correct |
27 |
Correct |
84 ms |
91888 KB |
Output is correct |
28 |
Correct |
33 ms |
32340 KB |
Output is correct |
29 |
Correct |
5 ms |
5464 KB |
Output is correct |
30 |
Correct |
1 ms |
608 KB |
Output is correct |
31 |
Correct |
3 ms |
3420 KB |
Output is correct |
32 |
Correct |
2 ms |
2396 KB |
Output is correct |
33 |
Correct |
38 ms |
34644 KB |
Output is correct |
34 |
Correct |
37 ms |
34664 KB |
Output is correct |
35 |
Runtime error |
123 ms |
262144 KB |
Execution killed with signal 9 |
36 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
344 KB |
Output is correct |
10 |
Correct |
2 ms |
1884 KB |
Output is correct |
11 |
Correct |
38 ms |
35952 KB |
Output is correct |
12 |
Correct |
85 ms |
95768 KB |
Output is correct |
13 |
Correct |
85 ms |
96084 KB |
Output is correct |
14 |
Correct |
38 ms |
34644 KB |
Output is correct |
15 |
Correct |
40 ms |
34644 KB |
Output is correct |
16 |
Correct |
6 ms |
6492 KB |
Output is correct |
17 |
Correct |
27 ms |
26460 KB |
Output is correct |
18 |
Correct |
8 ms |
8192 KB |
Output is correct |
19 |
Correct |
3 ms |
2904 KB |
Output is correct |
20 |
Correct |
85 ms |
96084 KB |
Output is correct |
21 |
Correct |
11 ms |
11352 KB |
Output is correct |
22 |
Correct |
4 ms |
4444 KB |
Output is correct |
23 |
Correct |
8 ms |
7716 KB |
Output is correct |
24 |
Correct |
29 ms |
28764 KB |
Output is correct |
25 |
Correct |
31 ms |
32336 KB |
Output is correct |
26 |
Correct |
79 ms |
89928 KB |
Output is correct |
27 |
Correct |
84 ms |
91728 KB |
Output is correct |
28 |
Correct |
31 ms |
32340 KB |
Output is correct |
29 |
Correct |
5 ms |
5468 KB |
Output is correct |
30 |
Correct |
1 ms |
604 KB |
Output is correct |
31 |
Correct |
3 ms |
3420 KB |
Output is correct |
32 |
Correct |
3 ms |
2396 KB |
Output is correct |
33 |
Correct |
37 ms |
34644 KB |
Output is correct |
34 |
Correct |
38 ms |
34908 KB |
Output is correct |
35 |
Runtime error |
93 ms |
262144 KB |
Execution killed with signal 9 |
36 |
Halted |
0 ms |
0 KB |
- |