#include<bits/stdc++.h>
using namespace std;
#define int long long
#define fi first
#define se second
#define pb push_back
#define mp make_pair
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;
const int N = 3e4 + 5;
const int oo = 1e18 + 7, mod = 1e9 + 7;
int n, m;
int b[N], p[N];
bool vis[N][205];
int mn_dist[N];
vector<int> doges[N];
priority_queue<pair<int, ii>, vector<pair<int, ii>>, greater<pair<int, ii>>> pq;
bool beg[N];
void process(){
cin >> n >> m;
for(int i = 1; i <= m; i++){
cin >> b[i] >> p[i];
b[i]++;
doges[b[i]].pb(p[i]);
}
for(int i = 1; i <= n; i++) mn_dist[i] = oo;
pq.push({0, {b[1], p[1]}});
mn_dist[b[1]] = 0;
if(p[1] <= 200) vis[b[1]][p[1]] = 1;
while(!pq.empty()){
int d = pq.top().fi, u = pq.top().se.fi, p = pq.top().se.se;
pq.pop();
if(p <= 200){
if((u > p) && !vis[u - p][p]){
vis[u - p][p] = 1;
mn_dist[u - p] = min(mn_dist[u - p], d + 1);
pq.push({d + 1, {u - p, p}});
}
if((u + p) <= n && !vis[u + p][p]){
vis[u + p][p] = 1;
mn_dist[u + p] = min(mn_dist[u + p], d + 1);
pq.push({d + 1, {u + p, p}});
}
}
if(d == mn_dist[u] && !beg[u]){
beg[u] = 1;
for(auto it : doges[u]){
if(it <= 200){
vis[u][it] = 1;
pq.push({d, {u, it}});
}
else{
for(int i = (u % it); i <= n; i += it){
if(!i) continue;
int dist = abs(i - u) / it;
if(mn_dist[i] > (mn_dist[u] + dist)){
mn_dist[i] = mn_dist[u] + dist;
pq.push({mn_dist[i], {i, it}});
}
}
}
}
}
}
cout << (mn_dist[b[2]] == oo ? -1 : mn_dist[b[2]]) << "\n";
}
signed main(){
ios_base::sync_with_stdio(0);
//freopen("doge.inp", "r", stdin);
//freopen("doge.out", "w", stdout);
cin.tie(0);
process();
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
980 KB |
Output is correct |
2 |
Correct |
1 ms |
980 KB |
Output is correct |
3 |
Correct |
1 ms |
980 KB |
Output is correct |
4 |
Correct |
1 ms |
980 KB |
Output is correct |
5 |
Correct |
1 ms |
980 KB |
Output is correct |
6 |
Correct |
1 ms |
980 KB |
Output is correct |
7 |
Correct |
1 ms |
980 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
980 KB |
Output is correct |
2 |
Correct |
1 ms |
980 KB |
Output is correct |
3 |
Correct |
1 ms |
980 KB |
Output is correct |
4 |
Correct |
1 ms |
980 KB |
Output is correct |
5 |
Correct |
1 ms |
980 KB |
Output is correct |
6 |
Correct |
1 ms |
980 KB |
Output is correct |
7 |
Correct |
1 ms |
980 KB |
Output is correct |
8 |
Correct |
1 ms |
980 KB |
Output is correct |
9 |
Correct |
1 ms |
980 KB |
Output is correct |
10 |
Correct |
1 ms |
980 KB |
Output is correct |
11 |
Correct |
2 ms |
1108 KB |
Output is correct |
12 |
Correct |
1 ms |
1108 KB |
Output is correct |
13 |
Correct |
1 ms |
1108 KB |
Output is correct |
14 |
Correct |
2 ms |
1108 KB |
Output is correct |
15 |
Correct |
2 ms |
1108 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
980 KB |
Output is correct |
2 |
Correct |
1 ms |
980 KB |
Output is correct |
3 |
Correct |
1 ms |
980 KB |
Output is correct |
4 |
Correct |
1 ms |
980 KB |
Output is correct |
5 |
Correct |
1 ms |
980 KB |
Output is correct |
6 |
Correct |
1 ms |
980 KB |
Output is correct |
7 |
Correct |
1 ms |
980 KB |
Output is correct |
8 |
Correct |
1 ms |
980 KB |
Output is correct |
9 |
Correct |
1 ms |
980 KB |
Output is correct |
10 |
Correct |
1 ms |
984 KB |
Output is correct |
11 |
Correct |
2 ms |
1108 KB |
Output is correct |
12 |
Correct |
1 ms |
1108 KB |
Output is correct |
13 |
Correct |
1 ms |
1108 KB |
Output is correct |
14 |
Correct |
2 ms |
1108 KB |
Output is correct |
15 |
Correct |
2 ms |
1236 KB |
Output is correct |
16 |
Correct |
1 ms |
980 KB |
Output is correct |
17 |
Correct |
2 ms |
1236 KB |
Output is correct |
18 |
Correct |
1 ms |
980 KB |
Output is correct |
19 |
Correct |
1 ms |
980 KB |
Output is correct |
20 |
Correct |
1 ms |
1492 KB |
Output is correct |
21 |
Correct |
1 ms |
980 KB |
Output is correct |
22 |
Correct |
1 ms |
980 KB |
Output is correct |
23 |
Correct |
2 ms |
1364 KB |
Output is correct |
24 |
Correct |
4 ms |
1492 KB |
Output is correct |
25 |
Correct |
2 ms |
1492 KB |
Output is correct |
26 |
Correct |
2 ms |
1560 KB |
Output is correct |
27 |
Correct |
2 ms |
1620 KB |
Output is correct |
28 |
Correct |
3 ms |
1492 KB |
Output is correct |
29 |
Correct |
7 ms |
1492 KB |
Output is correct |
30 |
Correct |
3 ms |
1364 KB |
Output is correct |
31 |
Correct |
6 ms |
1532 KB |
Output is correct |
32 |
Correct |
4 ms |
1492 KB |
Output is correct |
33 |
Correct |
15 ms |
1620 KB |
Output is correct |
34 |
Correct |
14 ms |
1620 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
980 KB |
Output is correct |
2 |
Correct |
1 ms |
980 KB |
Output is correct |
3 |
Correct |
1 ms |
980 KB |
Output is correct |
4 |
Correct |
1 ms |
980 KB |
Output is correct |
5 |
Correct |
1 ms |
980 KB |
Output is correct |
6 |
Correct |
1 ms |
980 KB |
Output is correct |
7 |
Correct |
1 ms |
980 KB |
Output is correct |
8 |
Correct |
1 ms |
980 KB |
Output is correct |
9 |
Correct |
1 ms |
980 KB |
Output is correct |
10 |
Correct |
1 ms |
980 KB |
Output is correct |
11 |
Correct |
2 ms |
1108 KB |
Output is correct |
12 |
Correct |
2 ms |
1108 KB |
Output is correct |
13 |
Correct |
1 ms |
1108 KB |
Output is correct |
14 |
Correct |
2 ms |
1108 KB |
Output is correct |
15 |
Correct |
2 ms |
1236 KB |
Output is correct |
16 |
Correct |
1 ms |
980 KB |
Output is correct |
17 |
Correct |
2 ms |
1236 KB |
Output is correct |
18 |
Correct |
1 ms |
980 KB |
Output is correct |
19 |
Correct |
1 ms |
980 KB |
Output is correct |
20 |
Correct |
2 ms |
1492 KB |
Output is correct |
21 |
Correct |
1 ms |
980 KB |
Output is correct |
22 |
Correct |
1 ms |
980 KB |
Output is correct |
23 |
Correct |
2 ms |
1364 KB |
Output is correct |
24 |
Correct |
3 ms |
1568 KB |
Output is correct |
25 |
Correct |
2 ms |
1564 KB |
Output is correct |
26 |
Correct |
2 ms |
1620 KB |
Output is correct |
27 |
Correct |
2 ms |
1620 KB |
Output is correct |
28 |
Correct |
2 ms |
1492 KB |
Output is correct |
29 |
Correct |
8 ms |
1540 KB |
Output is correct |
30 |
Correct |
3 ms |
1364 KB |
Output is correct |
31 |
Correct |
4 ms |
1492 KB |
Output is correct |
32 |
Correct |
3 ms |
1492 KB |
Output is correct |
33 |
Correct |
16 ms |
1636 KB |
Output is correct |
34 |
Correct |
15 ms |
1620 KB |
Output is correct |
35 |
Correct |
15 ms |
2556 KB |
Output is correct |
36 |
Correct |
3 ms |
1492 KB |
Output is correct |
37 |
Correct |
21 ms |
2464 KB |
Output is correct |
38 |
Correct |
20 ms |
2900 KB |
Output is correct |
39 |
Correct |
19 ms |
2868 KB |
Output is correct |
40 |
Correct |
20 ms |
2900 KB |
Output is correct |
41 |
Correct |
18 ms |
2888 KB |
Output is correct |
42 |
Correct |
9 ms |
3280 KB |
Output is correct |
43 |
Correct |
13 ms |
3284 KB |
Output is correct |
44 |
Correct |
9 ms |
3324 KB |
Output is correct |
45 |
Correct |
77 ms |
3164 KB |
Output is correct |
46 |
Correct |
67 ms |
3184 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
980 KB |
Output is correct |
2 |
Correct |
1 ms |
980 KB |
Output is correct |
3 |
Correct |
1 ms |
980 KB |
Output is correct |
4 |
Correct |
1 ms |
980 KB |
Output is correct |
5 |
Correct |
1 ms |
980 KB |
Output is correct |
6 |
Correct |
1 ms |
980 KB |
Output is correct |
7 |
Correct |
1 ms |
980 KB |
Output is correct |
8 |
Correct |
1 ms |
980 KB |
Output is correct |
9 |
Correct |
1 ms |
980 KB |
Output is correct |
10 |
Correct |
2 ms |
980 KB |
Output is correct |
11 |
Correct |
2 ms |
1108 KB |
Output is correct |
12 |
Correct |
1 ms |
1108 KB |
Output is correct |
13 |
Correct |
2 ms |
1108 KB |
Output is correct |
14 |
Correct |
2 ms |
1212 KB |
Output is correct |
15 |
Correct |
2 ms |
1108 KB |
Output is correct |
16 |
Correct |
1 ms |
980 KB |
Output is correct |
17 |
Correct |
3 ms |
1236 KB |
Output is correct |
18 |
Correct |
1 ms |
1108 KB |
Output is correct |
19 |
Correct |
1 ms |
980 KB |
Output is correct |
20 |
Correct |
2 ms |
1492 KB |
Output is correct |
21 |
Correct |
1 ms |
980 KB |
Output is correct |
22 |
Correct |
1 ms |
980 KB |
Output is correct |
23 |
Correct |
2 ms |
1364 KB |
Output is correct |
24 |
Correct |
4 ms |
1492 KB |
Output is correct |
25 |
Correct |
2 ms |
1492 KB |
Output is correct |
26 |
Correct |
2 ms |
1620 KB |
Output is correct |
27 |
Correct |
2 ms |
1620 KB |
Output is correct |
28 |
Correct |
3 ms |
1560 KB |
Output is correct |
29 |
Correct |
7 ms |
1432 KB |
Output is correct |
30 |
Correct |
3 ms |
1428 KB |
Output is correct |
31 |
Correct |
5 ms |
1492 KB |
Output is correct |
32 |
Correct |
3 ms |
1492 KB |
Output is correct |
33 |
Correct |
14 ms |
1620 KB |
Output is correct |
34 |
Correct |
14 ms |
1560 KB |
Output is correct |
35 |
Correct |
13 ms |
2588 KB |
Output is correct |
36 |
Correct |
3 ms |
1492 KB |
Output is correct |
37 |
Correct |
20 ms |
2456 KB |
Output is correct |
38 |
Correct |
20 ms |
2896 KB |
Output is correct |
39 |
Correct |
19 ms |
2864 KB |
Output is correct |
40 |
Correct |
18 ms |
3008 KB |
Output is correct |
41 |
Correct |
19 ms |
2900 KB |
Output is correct |
42 |
Correct |
11 ms |
3284 KB |
Output is correct |
43 |
Correct |
10 ms |
3284 KB |
Output is correct |
44 |
Correct |
8 ms |
3324 KB |
Output is correct |
45 |
Correct |
61 ms |
3172 KB |
Output is correct |
46 |
Correct |
62 ms |
3208 KB |
Output is correct |
47 |
Correct |
77 ms |
5328 KB |
Output is correct |
48 |
Correct |
6 ms |
2260 KB |
Output is correct |
49 |
Correct |
7 ms |
2204 KB |
Output is correct |
50 |
Correct |
5 ms |
1964 KB |
Output is correct |
51 |
Correct |
44 ms |
9280 KB |
Output is correct |
52 |
Correct |
45 ms |
9272 KB |
Output is correct |
53 |
Correct |
15 ms |
8712 KB |
Output is correct |
54 |
Correct |
5 ms |
7312 KB |
Output is correct |
55 |
Correct |
5 ms |
7252 KB |
Output is correct |
56 |
Correct |
14 ms |
8816 KB |
Output is correct |
57 |
Correct |
50 ms |
7480 KB |
Output is correct |
58 |
Correct |
14 ms |
9020 KB |
Output is correct |
59 |
Correct |
15 ms |
9116 KB |
Output is correct |
60 |
Correct |
19 ms |
9044 KB |
Output is correct |
61 |
Correct |
16 ms |
9124 KB |
Output is correct |
62 |
Correct |
29 ms |
8992 KB |
Output is correct |
63 |
Correct |
43 ms |
10896 KB |
Output is correct |
64 |
Correct |
48 ms |
11008 KB |
Output is correct |
65 |
Correct |
276 ms |
11284 KB |
Output is correct |
66 |
Correct |
953 ms |
11380 KB |
Output is correct |
67 |
Correct |
955 ms |
11540 KB |
Output is correct |