// And you curse yourself for things you never done
#include<bits/stdc++.h>
#define F first
#define S second
#define PB push_back
#define sz(s) int((s).size())
#define bit(n,k) (((n)>>(k))&1)
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
const int maxn = 3e4 + 10;
vector<int> vec[maxn];
bitset<maxn> bs[maxn];
int dis[maxn];
bool done[maxn];
pii p[maxn];
int main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie();
int n, m;
cin >> n >> m;
for(int i = 0; i < m; i++){
cin >> p[i].F >> p[i].S;
vec[p[i].F].PB(p[i].S);
}
fill(dis, dis + maxn, -1);
deque< pair<pii, int> > q;
q.push_back({p[0], 0});
while(sz(q)){
int pos = q.front().F.F, p = q.front().F.S, d = q.front().S;
q.pop_front();
if(bs[pos][p])
continue;
bs[pos][p] = 1;
if(done[pos] == 0){
dis[pos] = d;
for(int x : vec[pos])
q.push_front({ {pos, x}, d });
}
done[pos] = 1;
if(pos >= p)
q.push_back({ {pos - p, p}, d + 1 });
if(pos + p < n)
q.push_back({ {pos + p, p}, d + 1 });
}
return cout << dis[p[1].F] << endl, 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1152 KB |
Output is correct |
2 |
Correct |
1 ms |
1152 KB |
Output is correct |
3 |
Correct |
1 ms |
1152 KB |
Output is correct |
4 |
Correct |
1 ms |
1152 KB |
Output is correct |
5 |
Correct |
1 ms |
1152 KB |
Output is correct |
6 |
Correct |
1 ms |
1152 KB |
Output is correct |
7 |
Correct |
1 ms |
1152 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1152 KB |
Output is correct |
2 |
Correct |
1 ms |
1152 KB |
Output is correct |
3 |
Correct |
1 ms |
1152 KB |
Output is correct |
4 |
Correct |
1 ms |
1152 KB |
Output is correct |
5 |
Correct |
1 ms |
1152 KB |
Output is correct |
6 |
Correct |
1 ms |
1152 KB |
Output is correct |
7 |
Correct |
1 ms |
1152 KB |
Output is correct |
8 |
Correct |
1 ms |
1408 KB |
Output is correct |
9 |
Correct |
1 ms |
1408 KB |
Output is correct |
10 |
Correct |
2 ms |
1536 KB |
Output is correct |
11 |
Correct |
2 ms |
1664 KB |
Output is correct |
12 |
Correct |
1 ms |
1536 KB |
Output is correct |
13 |
Correct |
2 ms |
1536 KB |
Output is correct |
14 |
Correct |
2 ms |
1664 KB |
Output is correct |
15 |
Correct |
2 ms |
1664 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1152 KB |
Output is correct |
2 |
Correct |
1 ms |
1152 KB |
Output is correct |
3 |
Correct |
1 ms |
1152 KB |
Output is correct |
4 |
Correct |
2 ms |
1152 KB |
Output is correct |
5 |
Correct |
1 ms |
1152 KB |
Output is correct |
6 |
Correct |
1 ms |
1152 KB |
Output is correct |
7 |
Correct |
1 ms |
1152 KB |
Output is correct |
8 |
Correct |
2 ms |
1280 KB |
Output is correct |
9 |
Correct |
2 ms |
1408 KB |
Output is correct |
10 |
Correct |
1 ms |
1536 KB |
Output is correct |
11 |
Correct |
2 ms |
1664 KB |
Output is correct |
12 |
Correct |
2 ms |
1536 KB |
Output is correct |
13 |
Correct |
3 ms |
1536 KB |
Output is correct |
14 |
Correct |
2 ms |
1620 KB |
Output is correct |
15 |
Correct |
3 ms |
1664 KB |
Output is correct |
16 |
Correct |
1 ms |
1152 KB |
Output is correct |
17 |
Correct |
4 ms |
3968 KB |
Output is correct |
18 |
Correct |
1 ms |
1280 KB |
Output is correct |
19 |
Correct |
1 ms |
1280 KB |
Output is correct |
20 |
Correct |
8 ms |
8576 KB |
Output is correct |
21 |
Correct |
2 ms |
1280 KB |
Output is correct |
22 |
Correct |
1 ms |
1280 KB |
Output is correct |
23 |
Correct |
6 ms |
6912 KB |
Output is correct |
24 |
Correct |
7 ms |
8192 KB |
Output is correct |
25 |
Correct |
7 ms |
8576 KB |
Output is correct |
26 |
Correct |
7 ms |
8576 KB |
Output is correct |
27 |
Correct |
7 ms |
8576 KB |
Output is correct |
28 |
Correct |
8 ms |
8576 KB |
Output is correct |
29 |
Correct |
8 ms |
8576 KB |
Output is correct |
30 |
Correct |
7 ms |
8576 KB |
Output is correct |
31 |
Correct |
9 ms |
8576 KB |
Output is correct |
32 |
Correct |
7 ms |
8576 KB |
Output is correct |
33 |
Correct |
11 ms |
8576 KB |
Output is correct |
34 |
Correct |
11 ms |
8576 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1152 KB |
Output is correct |
2 |
Correct |
2 ms |
1152 KB |
Output is correct |
3 |
Correct |
1 ms |
1152 KB |
Output is correct |
4 |
Correct |
1 ms |
1152 KB |
Output is correct |
5 |
Correct |
1 ms |
1152 KB |
Output is correct |
6 |
Correct |
1 ms |
1152 KB |
Output is correct |
7 |
Correct |
1 ms |
1152 KB |
Output is correct |
8 |
Correct |
1 ms |
1280 KB |
Output is correct |
9 |
Correct |
1 ms |
1408 KB |
Output is correct |
10 |
Correct |
1 ms |
1536 KB |
Output is correct |
11 |
Correct |
2 ms |
1536 KB |
Output is correct |
12 |
Correct |
1 ms |
1536 KB |
Output is correct |
13 |
Correct |
1 ms |
1536 KB |
Output is correct |
14 |
Correct |
2 ms |
1664 KB |
Output is correct |
15 |
Correct |
2 ms |
1664 KB |
Output is correct |
16 |
Correct |
1 ms |
1152 KB |
Output is correct |
17 |
Correct |
4 ms |
3968 KB |
Output is correct |
18 |
Correct |
1 ms |
1280 KB |
Output is correct |
19 |
Correct |
1 ms |
1280 KB |
Output is correct |
20 |
Correct |
6 ms |
8576 KB |
Output is correct |
21 |
Correct |
1 ms |
1152 KB |
Output is correct |
22 |
Correct |
1 ms |
1280 KB |
Output is correct |
23 |
Correct |
5 ms |
6912 KB |
Output is correct |
24 |
Correct |
7 ms |
8192 KB |
Output is correct |
25 |
Correct |
7 ms |
8576 KB |
Output is correct |
26 |
Correct |
7 ms |
8576 KB |
Output is correct |
27 |
Correct |
7 ms |
8576 KB |
Output is correct |
28 |
Correct |
7 ms |
8580 KB |
Output is correct |
29 |
Correct |
9 ms |
8576 KB |
Output is correct |
30 |
Correct |
7 ms |
8576 KB |
Output is correct |
31 |
Correct |
7 ms |
8576 KB |
Output is correct |
32 |
Correct |
8 ms |
8576 KB |
Output is correct |
33 |
Correct |
12 ms |
8576 KB |
Output is correct |
34 |
Correct |
11 ms |
8576 KB |
Output is correct |
35 |
Correct |
17 ms |
7296 KB |
Output is correct |
36 |
Correct |
5 ms |
5280 KB |
Output is correct |
37 |
Correct |
19 ms |
9344 KB |
Output is correct |
38 |
Correct |
19 ms |
9600 KB |
Output is correct |
39 |
Correct |
20 ms |
9600 KB |
Output is correct |
40 |
Correct |
19 ms |
9600 KB |
Output is correct |
41 |
Correct |
19 ms |
9600 KB |
Output is correct |
42 |
Correct |
13 ms |
9336 KB |
Output is correct |
43 |
Correct |
13 ms |
9332 KB |
Output is correct |
44 |
Correct |
11 ms |
9344 KB |
Output is correct |
45 |
Correct |
29 ms |
9856 KB |
Output is correct |
46 |
Correct |
32 ms |
9848 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1152 KB |
Output is correct |
2 |
Correct |
1 ms |
1152 KB |
Output is correct |
3 |
Correct |
1 ms |
1152 KB |
Output is correct |
4 |
Correct |
1 ms |
1152 KB |
Output is correct |
5 |
Correct |
1 ms |
1152 KB |
Output is correct |
6 |
Correct |
1 ms |
1152 KB |
Output is correct |
7 |
Correct |
1 ms |
1152 KB |
Output is correct |
8 |
Correct |
1 ms |
1280 KB |
Output is correct |
9 |
Correct |
2 ms |
1408 KB |
Output is correct |
10 |
Correct |
2 ms |
1536 KB |
Output is correct |
11 |
Correct |
2 ms |
1664 KB |
Output is correct |
12 |
Correct |
2 ms |
1536 KB |
Output is correct |
13 |
Correct |
1 ms |
1536 KB |
Output is correct |
14 |
Correct |
2 ms |
1664 KB |
Output is correct |
15 |
Correct |
2 ms |
1664 KB |
Output is correct |
16 |
Correct |
1 ms |
1152 KB |
Output is correct |
17 |
Correct |
4 ms |
3968 KB |
Output is correct |
18 |
Correct |
1 ms |
1280 KB |
Output is correct |
19 |
Correct |
1 ms |
1280 KB |
Output is correct |
20 |
Correct |
7 ms |
8576 KB |
Output is correct |
21 |
Correct |
1 ms |
1152 KB |
Output is correct |
22 |
Correct |
1 ms |
1152 KB |
Output is correct |
23 |
Correct |
6 ms |
6912 KB |
Output is correct |
24 |
Correct |
7 ms |
8192 KB |
Output is correct |
25 |
Correct |
8 ms |
8576 KB |
Output is correct |
26 |
Correct |
7 ms |
8576 KB |
Output is correct |
27 |
Correct |
7 ms |
8576 KB |
Output is correct |
28 |
Correct |
7 ms |
8576 KB |
Output is correct |
29 |
Correct |
8 ms |
8608 KB |
Output is correct |
30 |
Correct |
7 ms |
8576 KB |
Output is correct |
31 |
Correct |
7 ms |
8576 KB |
Output is correct |
32 |
Correct |
7 ms |
8576 KB |
Output is correct |
33 |
Correct |
11 ms |
8576 KB |
Output is correct |
34 |
Correct |
19 ms |
8532 KB |
Output is correct |
35 |
Correct |
14 ms |
7168 KB |
Output is correct |
36 |
Correct |
9 ms |
5248 KB |
Output is correct |
37 |
Correct |
25 ms |
9208 KB |
Output is correct |
38 |
Correct |
23 ms |
9472 KB |
Output is correct |
39 |
Correct |
19 ms |
9472 KB |
Output is correct |
40 |
Correct |
19 ms |
9472 KB |
Output is correct |
41 |
Correct |
19 ms |
9472 KB |
Output is correct |
42 |
Correct |
12 ms |
9208 KB |
Output is correct |
43 |
Correct |
11 ms |
9204 KB |
Output is correct |
44 |
Correct |
12 ms |
9216 KB |
Output is correct |
45 |
Correct |
28 ms |
9728 KB |
Output is correct |
46 |
Correct |
28 ms |
9720 KB |
Output is correct |
47 |
Correct |
81 ms |
47864 KB |
Output is correct |
48 |
Correct |
7 ms |
1792 KB |
Output is correct |
49 |
Correct |
7 ms |
1792 KB |
Output is correct |
50 |
Correct |
5 ms |
1664 KB |
Output is correct |
51 |
Correct |
125 ms |
112376 KB |
Output is correct |
52 |
Correct |
117 ms |
112504 KB |
Output is correct |
53 |
Correct |
99 ms |
112120 KB |
Output is correct |
54 |
Correct |
41 ms |
61432 KB |
Output is correct |
55 |
Correct |
52 ms |
78072 KB |
Output is correct |
56 |
Correct |
89 ms |
112504 KB |
Output is correct |
57 |
Correct |
108 ms |
111480 KB |
Output is correct |
58 |
Correct |
81 ms |
111980 KB |
Output is correct |
59 |
Correct |
99 ms |
111984 KB |
Output is correct |
60 |
Correct |
99 ms |
111984 KB |
Output is correct |
61 |
Correct |
97 ms |
111992 KB |
Output is correct |
62 |
Correct |
150 ms |
112552 KB |
Output is correct |
63 |
Correct |
191 ms |
112232 KB |
Output is correct |
64 |
Correct |
225 ms |
112376 KB |
Output is correct |
65 |
Correct |
297 ms |
112712 KB |
Output is correct |
66 |
Correct |
425 ms |
112632 KB |
Output is correct |
67 |
Correct |
432 ms |
112760 KB |
Output is correct |