#include <cstdio>
#include <queue>
#include <vector>
#include <algorithm>
using namespace std;
struct data{
int to,dist;
};
struct cmp{
bool operator()(data d1,data d2){
return d1.dist>d2.dist;
}
};
int n,m;
int dist[30010];
data arr[30010];
bool visit[30010];
vector<data> vt[30010];
priority_queue<data,vector<data>,cmp> pq;
void dij(int a){
int i;
data s;
pq.push((data){a,1});
while(!pq.empty()){
a=pq.top().to; pq.pop();
if(visit[a]) continue; visit[a]=1;
for(i=0;i<vt[a].size();i++){
s=vt[a][i];
if(dist[s.to]==0 || dist[s.to]>dist[a]+s.dist){
pq.push((data){s.to,dist[a]+s.dist}); dist[s.to]=dist[a]+s.dist;
}
}
}
}
int main(){
int i,j;
scanf("%d %d",&n,&m);
for(i=0;i<m;i++) scanf("%d %d",&arr[i].to,&arr[i].dist);
for(i=0;i<m;i++){
for(j=i+1;j<m;j++){
if(!(abs(arr[i].to-arr[j].to)%arr[i].dist)) vt[i].push_back((data){j,abs(arr[i].to-arr[j].to)/arr[i].dist});
if(!(abs(arr[i].to-arr[j].to)%arr[j].dist)) vt[j].push_back((data){i,abs(arr[i].to-arr[j].to)/arr[j].dist});
}
}
dist[0]=1;
dij(0);
if(!visit[1]) printf("-1");
else printf("%d",dist[1]-1);
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
2664 KB |
Output is correct |
2 |
Correct |
0 ms |
2664 KB |
Output is correct |
3 |
Correct |
0 ms |
2664 KB |
Output is correct |
4 |
Correct |
0 ms |
2664 KB |
Output is correct |
5 |
Correct |
0 ms |
2664 KB |
Output is correct |
6 |
Correct |
0 ms |
2664 KB |
Output is correct |
7 |
Correct |
0 ms |
2664 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
2664 KB |
Output is correct |
2 |
Correct |
0 ms |
2664 KB |
Output is correct |
3 |
Correct |
0 ms |
2664 KB |
Output is correct |
4 |
Correct |
0 ms |
2664 KB |
Output is correct |
5 |
Correct |
0 ms |
2664 KB |
Output is correct |
6 |
Correct |
0 ms |
2664 KB |
Output is correct |
7 |
Correct |
0 ms |
2664 KB |
Output is correct |
8 |
Correct |
0 ms |
2664 KB |
Output is correct |
9 |
Correct |
0 ms |
2664 KB |
Output is correct |
10 |
Correct |
2 ms |
2664 KB |
Output is correct |
11 |
Correct |
33 ms |
4932 KB |
Output is correct |
12 |
Correct |
90 ms |
34692 KB |
Output is correct |
13 |
Correct |
137 ms |
34868 KB |
Output is correct |
14 |
Correct |
36 ms |
4276 KB |
Output is correct |
15 |
Correct |
31 ms |
4268 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
2664 KB |
Output is correct |
2 |
Correct |
0 ms |
2664 KB |
Output is correct |
3 |
Correct |
0 ms |
2664 KB |
Output is correct |
4 |
Correct |
0 ms |
2664 KB |
Output is correct |
5 |
Correct |
0 ms |
2664 KB |
Output is correct |
6 |
Correct |
0 ms |
2664 KB |
Output is correct |
7 |
Correct |
0 ms |
2664 KB |
Output is correct |
8 |
Correct |
0 ms |
2664 KB |
Output is correct |
9 |
Correct |
0 ms |
2664 KB |
Output is correct |
10 |
Correct |
0 ms |
2664 KB |
Output is correct |
11 |
Correct |
38 ms |
4932 KB |
Output is correct |
12 |
Correct |
97 ms |
34692 KB |
Output is correct |
13 |
Correct |
106 ms |
34868 KB |
Output is correct |
14 |
Correct |
36 ms |
4276 KB |
Output is correct |
15 |
Correct |
33 ms |
4268 KB |
Output is correct |
16 |
Correct |
7 ms |
2932 KB |
Output is correct |
17 |
Correct |
24 ms |
3352 KB |
Output is correct |
18 |
Correct |
6 ms |
2664 KB |
Output is correct |
19 |
Correct |
1 ms |
2664 KB |
Output is correct |
20 |
Correct |
92 ms |
34868 KB |
Output is correct |
21 |
Correct |
8 ms |
2664 KB |
Output is correct |
22 |
Correct |
4 ms |
2664 KB |
Output is correct |
23 |
Correct |
6 ms |
2664 KB |
Output is correct |
24 |
Correct |
23 ms |
2796 KB |
Output is correct |
25 |
Correct |
23 ms |
2796 KB |
Output is correct |
26 |
Correct |
120 ms |
31716 KB |
Output is correct |
27 |
Correct |
126 ms |
32712 KB |
Output is correct |
28 |
Correct |
25 ms |
2796 KB |
Output is correct |
29 |
Correct |
4 ms |
2928 KB |
Output is correct |
30 |
Correct |
0 ms |
2664 KB |
Output is correct |
31 |
Correct |
3 ms |
2796 KB |
Output is correct |
32 |
Correct |
0 ms |
2664 KB |
Output is correct |
33 |
Correct |
36 ms |
4276 KB |
Output is correct |
34 |
Correct |
28 ms |
4268 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
2664 KB |
Output is correct |
2 |
Correct |
0 ms |
2664 KB |
Output is correct |
3 |
Correct |
0 ms |
2664 KB |
Output is correct |
4 |
Correct |
0 ms |
2664 KB |
Output is correct |
5 |
Correct |
0 ms |
2664 KB |
Output is correct |
6 |
Correct |
0 ms |
2664 KB |
Output is correct |
7 |
Correct |
0 ms |
2664 KB |
Output is correct |
8 |
Correct |
0 ms |
2664 KB |
Output is correct |
9 |
Correct |
0 ms |
2664 KB |
Output is correct |
10 |
Correct |
0 ms |
2664 KB |
Output is correct |
11 |
Correct |
39 ms |
4932 KB |
Output is correct |
12 |
Correct |
117 ms |
34692 KB |
Output is correct |
13 |
Correct |
81 ms |
34868 KB |
Output is correct |
14 |
Correct |
28 ms |
4276 KB |
Output is correct |
15 |
Correct |
34 ms |
4268 KB |
Output is correct |
16 |
Correct |
5 ms |
2932 KB |
Output is correct |
17 |
Correct |
24 ms |
3352 KB |
Output is correct |
18 |
Correct |
7 ms |
2664 KB |
Output is correct |
19 |
Correct |
0 ms |
2664 KB |
Output is correct |
20 |
Correct |
133 ms |
34868 KB |
Output is correct |
21 |
Correct |
6 ms |
2664 KB |
Output is correct |
22 |
Correct |
0 ms |
2664 KB |
Output is correct |
23 |
Correct |
3 ms |
2664 KB |
Output is correct |
24 |
Correct |
23 ms |
2796 KB |
Output is correct |
25 |
Correct |
24 ms |
2796 KB |
Output is correct |
26 |
Correct |
87 ms |
31716 KB |
Output is correct |
27 |
Correct |
84 ms |
32712 KB |
Output is correct |
28 |
Correct |
25 ms |
2796 KB |
Output is correct |
29 |
Correct |
5 ms |
2928 KB |
Output is correct |
30 |
Correct |
0 ms |
2664 KB |
Output is correct |
31 |
Correct |
0 ms |
2796 KB |
Output is correct |
32 |
Correct |
2 ms |
2664 KB |
Output is correct |
33 |
Correct |
34 ms |
4276 KB |
Output is correct |
34 |
Correct |
36 ms |
4268 KB |
Output is correct |
35 |
Execution timed out |
1000 ms |
19704 KB |
Program timed out |
36 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
2664 KB |
Output is correct |
2 |
Correct |
0 ms |
2664 KB |
Output is correct |
3 |
Correct |
0 ms |
2664 KB |
Output is correct |
4 |
Correct |
0 ms |
2664 KB |
Output is correct |
5 |
Correct |
0 ms |
2664 KB |
Output is correct |
6 |
Correct |
0 ms |
2664 KB |
Output is correct |
7 |
Correct |
0 ms |
2664 KB |
Output is correct |
8 |
Correct |
0 ms |
2664 KB |
Output is correct |
9 |
Correct |
0 ms |
2664 KB |
Output is correct |
10 |
Correct |
2 ms |
2664 KB |
Output is correct |
11 |
Correct |
38 ms |
4932 KB |
Output is correct |
12 |
Correct |
126 ms |
34692 KB |
Output is correct |
13 |
Correct |
123 ms |
34868 KB |
Output is correct |
14 |
Correct |
32 ms |
4276 KB |
Output is correct |
15 |
Correct |
31 ms |
4268 KB |
Output is correct |
16 |
Correct |
6 ms |
2932 KB |
Output is correct |
17 |
Correct |
24 ms |
3352 KB |
Output is correct |
18 |
Correct |
3 ms |
2664 KB |
Output is correct |
19 |
Correct |
0 ms |
2664 KB |
Output is correct |
20 |
Correct |
129 ms |
34868 KB |
Output is correct |
21 |
Correct |
8 ms |
2664 KB |
Output is correct |
22 |
Correct |
4 ms |
2664 KB |
Output is correct |
23 |
Correct |
7 ms |
2664 KB |
Output is correct |
24 |
Correct |
23 ms |
2796 KB |
Output is correct |
25 |
Correct |
21 ms |
2796 KB |
Output is correct |
26 |
Correct |
104 ms |
31716 KB |
Output is correct |
27 |
Correct |
97 ms |
32712 KB |
Output is correct |
28 |
Correct |
25 ms |
2796 KB |
Output is correct |
29 |
Correct |
4 ms |
2928 KB |
Output is correct |
30 |
Correct |
0 ms |
2664 KB |
Output is correct |
31 |
Correct |
3 ms |
2796 KB |
Output is correct |
32 |
Correct |
2 ms |
2664 KB |
Output is correct |
33 |
Correct |
31 ms |
4276 KB |
Output is correct |
34 |
Correct |
30 ms |
4268 KB |
Output is correct |
35 |
Execution timed out |
1000 ms |
19704 KB |
Program timed out |
36 |
Halted |
0 ms |
0 KB |
- |