#include <bits/stdc++.h>
using namespace std;
struct info{
int badge;
int cur_pos;
int nr_of_jumps;
};
bool vis[30002];
deque<info> dq;
vector<int> doges[30002];
int jmp[30002];
int n,m;
void bfs01(int doge, int pos, int kon){
dq.push_back({doge,pos,0});
dq.push_back({-doge,pos,0});
vis[doge]=true;
while(dq.size()){
info now=dq.front();
dq.pop_front();
if (now.cur_pos==kon){
cout << now.nr_of_jumps << '\n';
return;
}
for (auto u : doges[now.cur_pos])if (!vis[u]){
vis[u]=true;
if (jmp[u]==jmp[abs(now.badge)])continue;
dq.push_front({u,now.cur_pos,now.nr_of_jumps});
dq.push_front({-u,now.cur_pos,now.nr_of_jumps});
}
if (now.cur_pos>=jmp[abs(now.badge)] && now.badge<0){
dq.push_back({now.badge,now.cur_pos-jmp[abs(now.badge)],now.nr_of_jumps+1});
}
if (now.cur_pos+jmp[abs(now.badge)]<n && now.badge>0){
dq.push_back({now.badge,now.cur_pos+jmp[now.badge],now.nr_of_jumps+1});
}
}
cout << "-1\n";
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
int b,p,st,nd;
cin >> n >> m;
cin >> st >> jmp[1];
doges[st].push_back(1);
cin >> nd >> p;
for (int i = 2; i<m; i++){
cin >> b >> jmp[i];
doges[b].push_back(i);
}
bfs01(1,st,nd);
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 2 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 2 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 14 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 15 |
Correct |
1 ms |
1116 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 2 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 6 |
Correct |
0 ms |
1116 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1272 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 14 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 15 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 17 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 18 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 19 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 20 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 21 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 23 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 24 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 25 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 27 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 29 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 30 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 31 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 32 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 33 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 34 |
Correct |
2 ms |
1116 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 2 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1268 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 14 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 15 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 17 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 18 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 19 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 20 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 21 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 23 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 24 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 25 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 27 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 29 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 30 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 31 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 32 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 33 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 34 |
Correct |
2 ms |
1112 KB |
Output is correct |
| 35 |
Correct |
6 ms |
1628 KB |
Output is correct |
| 36 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 37 |
Correct |
4 ms |
1628 KB |
Output is correct |
| 38 |
Correct |
5 ms |
1628 KB |
Output is correct |
| 39 |
Correct |
4 ms |
1368 KB |
Output is correct |
| 40 |
Correct |
5 ms |
1368 KB |
Output is correct |
| 41 |
Correct |
7 ms |
1628 KB |
Output is correct |
| 42 |
Correct |
4 ms |
1372 KB |
Output is correct |
| 43 |
Correct |
4 ms |
1372 KB |
Output is correct |
| 44 |
Correct |
4 ms |
1372 KB |
Output is correct |
| 45 |
Correct |
21 ms |
1884 KB |
Output is correct |
| 46 |
Correct |
19 ms |
1700 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 2 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 3 |
Correct |
0 ms |
1116 KB |
Output is correct |
| 4 |
Correct |
0 ms |
1116 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 14 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 15 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1120 KB |
Output is correct |
| 17 |
Correct |
1 ms |
1120 KB |
Output is correct |
| 18 |
Correct |
1 ms |
1120 KB |
Output is correct |
| 19 |
Correct |
1 ms |
1120 KB |
Output is correct |
| 20 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 21 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 23 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 24 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 25 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 27 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 29 |
Correct |
2 ms |
1112 KB |
Output is correct |
| 30 |
Correct |
1 ms |
1112 KB |
Output is correct |
| 31 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 32 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 33 |
Correct |
2 ms |
1112 KB |
Output is correct |
| 34 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 35 |
Correct |
6 ms |
1628 KB |
Output is correct |
| 36 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 37 |
Correct |
4 ms |
1636 KB |
Output is correct |
| 38 |
Correct |
6 ms |
1628 KB |
Output is correct |
| 39 |
Correct |
5 ms |
1372 KB |
Output is correct |
| 40 |
Correct |
5 ms |
1372 KB |
Output is correct |
| 41 |
Correct |
7 ms |
1628 KB |
Output is correct |
| 42 |
Correct |
4 ms |
1372 KB |
Output is correct |
| 43 |
Correct |
3 ms |
1368 KB |
Output is correct |
| 44 |
Correct |
4 ms |
1372 KB |
Output is correct |
| 45 |
Correct |
21 ms |
1888 KB |
Output is correct |
| 46 |
Correct |
22 ms |
1864 KB |
Output is correct |
| 47 |
Correct |
5 ms |
1628 KB |
Output is correct |
| 48 |
Correct |
5 ms |
1628 KB |
Output is correct |
| 49 |
Correct |
4 ms |
1628 KB |
Output is correct |
| 50 |
Correct |
3 ms |
1368 KB |
Output is correct |
| 51 |
Correct |
8 ms |
1968 KB |
Output is correct |
| 52 |
Correct |
8 ms |
1884 KB |
Output is correct |
| 53 |
Correct |
6 ms |
1884 KB |
Output is correct |
| 54 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 55 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 56 |
Correct |
5 ms |
2240 KB |
Output is correct |
| 57 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 58 |
Execution timed out |
1097 ms |
2148 KB |
Time limit exceeded |
| 59 |
Halted |
0 ms |
0 KB |
- |
