#include<bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define ff first
#define ss second
#define pb push_back
#define SZ(x) ((int) (x).size())
using namespace std;
const int MAXN = 3e4+100;
int N, M, S, E, B[MAXN], P[MAXN];
vector<int> adj[MAXN];
void read(){
cin >> N >> M;
for(int i = 0; i < M; i++){
cin >> B[i] >> P[i];
adj[B[i]].pb(P[i]);
}
S = B[0], E = B[1];
}
void solve(){
read();
vector<int> dp(N, INT_MAX);
priority_queue<pii, vector<pii>, greater<pii>> pq;
pq.push({0, S});
dp[S] = 0;
while(!pq.empty()){
int dist = pq.top().ff;
int v = pq.top().ss;
pq.pop();
if(dp[v] < dist){
continue;
}
if(v == E) break;
for(auto p : adj[v]){
for(int u = v + p, w = 1; u < N; u += p, w++){
if(dp[u] > dp[v] + w){
dp[u] = dp[v] + w;
pq.push({dp[u], u});
}
}
for(int u = v - p, w = 1; u >= 0; u -= p, w++){
if(dp[u] > dp[v] + w){
dp[u] = dp[v] + w;
pq.push({dp[u], u});
}
}
}
}
if(dp[E] == INT_MAX){
dp[E] = -1;
}
cout << dp[E];
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
solve();
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1024 KB |
Output is correct |
2 |
Correct |
1 ms |
1024 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
1 ms |
1024 KB |
Output is correct |
5 |
Correct |
1 ms |
1024 KB |
Output is correct |
6 |
Correct |
1 ms |
1024 KB |
Output is correct |
7 |
Correct |
1 ms |
1024 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1024 KB |
Output is correct |
2 |
Correct |
1 ms |
1024 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
1 ms |
1024 KB |
Output is correct |
5 |
Correct |
1 ms |
1024 KB |
Output is correct |
6 |
Correct |
1 ms |
1024 KB |
Output is correct |
7 |
Correct |
1 ms |
1024 KB |
Output is correct |
8 |
Correct |
1 ms |
1024 KB |
Output is correct |
9 |
Correct |
1 ms |
1024 KB |
Output is correct |
10 |
Correct |
1 ms |
1024 KB |
Output is correct |
11 |
Correct |
1 ms |
1152 KB |
Output is correct |
12 |
Correct |
1 ms |
1024 KB |
Output is correct |
13 |
Correct |
1 ms |
1024 KB |
Output is correct |
14 |
Correct |
1 ms |
1152 KB |
Output is correct |
15 |
Correct |
1 ms |
1024 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1024 KB |
Output is correct |
2 |
Correct |
1 ms |
1024 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
1 ms |
1024 KB |
Output is correct |
5 |
Correct |
1 ms |
1024 KB |
Output is correct |
6 |
Correct |
1 ms |
1024 KB |
Output is correct |
7 |
Correct |
1 ms |
1024 KB |
Output is correct |
8 |
Correct |
1 ms |
1024 KB |
Output is correct |
9 |
Correct |
1 ms |
1024 KB |
Output is correct |
10 |
Correct |
1 ms |
1024 KB |
Output is correct |
11 |
Correct |
1 ms |
1024 KB |
Output is correct |
12 |
Correct |
1 ms |
1024 KB |
Output is correct |
13 |
Correct |
1 ms |
1024 KB |
Output is correct |
14 |
Correct |
1 ms |
1024 KB |
Output is correct |
15 |
Correct |
1 ms |
1152 KB |
Output is correct |
16 |
Correct |
1 ms |
1024 KB |
Output is correct |
17 |
Correct |
1 ms |
1152 KB |
Output is correct |
18 |
Correct |
1 ms |
1152 KB |
Output is correct |
19 |
Correct |
1 ms |
1024 KB |
Output is correct |
20 |
Correct |
4 ms |
1152 KB |
Output is correct |
21 |
Correct |
1 ms |
1024 KB |
Output is correct |
22 |
Correct |
1 ms |
1024 KB |
Output is correct |
23 |
Correct |
1 ms |
1152 KB |
Output is correct |
24 |
Correct |
2 ms |
1152 KB |
Output is correct |
25 |
Correct |
1 ms |
1152 KB |
Output is correct |
26 |
Correct |
1 ms |
1152 KB |
Output is correct |
27 |
Correct |
1 ms |
1152 KB |
Output is correct |
28 |
Correct |
1 ms |
1152 KB |
Output is correct |
29 |
Correct |
3 ms |
1280 KB |
Output is correct |
30 |
Correct |
2 ms |
1152 KB |
Output is correct |
31 |
Correct |
2 ms |
1152 KB |
Output is correct |
32 |
Correct |
2 ms |
1152 KB |
Output is correct |
33 |
Correct |
3 ms |
1280 KB |
Output is correct |
34 |
Correct |
3 ms |
1280 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1024 KB |
Output is correct |
2 |
Correct |
1 ms |
1024 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
1 ms |
1024 KB |
Output is correct |
5 |
Correct |
1 ms |
1024 KB |
Output is correct |
6 |
Correct |
1 ms |
1024 KB |
Output is correct |
7 |
Correct |
1 ms |
1024 KB |
Output is correct |
8 |
Correct |
1 ms |
1024 KB |
Output is correct |
9 |
Correct |
1 ms |
1024 KB |
Output is correct |
10 |
Correct |
1 ms |
1024 KB |
Output is correct |
11 |
Correct |
1 ms |
1152 KB |
Output is correct |
12 |
Correct |
1 ms |
1024 KB |
Output is correct |
13 |
Correct |
1 ms |
1024 KB |
Output is correct |
14 |
Correct |
1 ms |
1024 KB |
Output is correct |
15 |
Correct |
1 ms |
1024 KB |
Output is correct |
16 |
Correct |
1 ms |
1024 KB |
Output is correct |
17 |
Correct |
1 ms |
1152 KB |
Output is correct |
18 |
Correct |
2 ms |
1152 KB |
Output is correct |
19 |
Correct |
1 ms |
1024 KB |
Output is correct |
20 |
Correct |
6 ms |
1152 KB |
Output is correct |
21 |
Correct |
1 ms |
1024 KB |
Output is correct |
22 |
Correct |
1 ms |
1024 KB |
Output is correct |
23 |
Correct |
1 ms |
1152 KB |
Output is correct |
24 |
Correct |
2 ms |
1152 KB |
Output is correct |
25 |
Correct |
2 ms |
1152 KB |
Output is correct |
26 |
Correct |
1 ms |
1152 KB |
Output is correct |
27 |
Correct |
1 ms |
1152 KB |
Output is correct |
28 |
Correct |
1 ms |
1152 KB |
Output is correct |
29 |
Correct |
3 ms |
1280 KB |
Output is correct |
30 |
Correct |
2 ms |
1152 KB |
Output is correct |
31 |
Correct |
2 ms |
1152 KB |
Output is correct |
32 |
Correct |
2 ms |
1152 KB |
Output is correct |
33 |
Correct |
3 ms |
1280 KB |
Output is correct |
34 |
Correct |
3 ms |
1280 KB |
Output is correct |
35 |
Correct |
7 ms |
1612 KB |
Output is correct |
36 |
Correct |
2 ms |
1152 KB |
Output is correct |
37 |
Correct |
6 ms |
1536 KB |
Output is correct |
38 |
Correct |
8 ms |
1664 KB |
Output is correct |
39 |
Correct |
7 ms |
1536 KB |
Output is correct |
40 |
Correct |
8 ms |
1536 KB |
Output is correct |
41 |
Correct |
9 ms |
1664 KB |
Output is correct |
42 |
Correct |
6 ms |
1536 KB |
Output is correct |
43 |
Correct |
5 ms |
1536 KB |
Output is correct |
44 |
Correct |
45 ms |
1536 KB |
Output is correct |
45 |
Correct |
8 ms |
1664 KB |
Output is correct |
46 |
Correct |
7 ms |
1664 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1024 KB |
Output is correct |
2 |
Correct |
1 ms |
1024 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
1 ms |
1024 KB |
Output is correct |
5 |
Correct |
1 ms |
1024 KB |
Output is correct |
6 |
Correct |
1 ms |
1024 KB |
Output is correct |
7 |
Correct |
1 ms |
1024 KB |
Output is correct |
8 |
Correct |
1 ms |
1024 KB |
Output is correct |
9 |
Correct |
1 ms |
1024 KB |
Output is correct |
10 |
Correct |
1 ms |
1024 KB |
Output is correct |
11 |
Correct |
1 ms |
1024 KB |
Output is correct |
12 |
Correct |
1 ms |
1024 KB |
Output is correct |
13 |
Correct |
1 ms |
1024 KB |
Output is correct |
14 |
Correct |
1 ms |
1152 KB |
Output is correct |
15 |
Correct |
1 ms |
1152 KB |
Output is correct |
16 |
Correct |
1 ms |
1024 KB |
Output is correct |
17 |
Correct |
1 ms |
1152 KB |
Output is correct |
18 |
Correct |
1 ms |
1024 KB |
Output is correct |
19 |
Correct |
1 ms |
1024 KB |
Output is correct |
20 |
Correct |
4 ms |
1152 KB |
Output is correct |
21 |
Correct |
1 ms |
1024 KB |
Output is correct |
22 |
Correct |
1 ms |
1024 KB |
Output is correct |
23 |
Correct |
1 ms |
1152 KB |
Output is correct |
24 |
Correct |
2 ms |
1152 KB |
Output is correct |
25 |
Correct |
2 ms |
1152 KB |
Output is correct |
26 |
Correct |
1 ms |
1152 KB |
Output is correct |
27 |
Correct |
1 ms |
1152 KB |
Output is correct |
28 |
Correct |
2 ms |
1152 KB |
Output is correct |
29 |
Correct |
3 ms |
1280 KB |
Output is correct |
30 |
Correct |
1 ms |
1152 KB |
Output is correct |
31 |
Correct |
2 ms |
1152 KB |
Output is correct |
32 |
Correct |
2 ms |
1152 KB |
Output is correct |
33 |
Correct |
3 ms |
1280 KB |
Output is correct |
34 |
Correct |
3 ms |
1280 KB |
Output is correct |
35 |
Correct |
7 ms |
1536 KB |
Output is correct |
36 |
Correct |
2 ms |
1152 KB |
Output is correct |
37 |
Correct |
6 ms |
1536 KB |
Output is correct |
38 |
Correct |
8 ms |
1672 KB |
Output is correct |
39 |
Correct |
7 ms |
1536 KB |
Output is correct |
40 |
Correct |
7 ms |
1536 KB |
Output is correct |
41 |
Correct |
8 ms |
1664 KB |
Output is correct |
42 |
Correct |
5 ms |
1536 KB |
Output is correct |
43 |
Correct |
6 ms |
1536 KB |
Output is correct |
44 |
Correct |
45 ms |
1664 KB |
Output is correct |
45 |
Correct |
8 ms |
1664 KB |
Output is correct |
46 |
Correct |
7 ms |
1664 KB |
Output is correct |
47 |
Correct |
10 ms |
2300 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 |
17 ms |
3192 KB |
Output is correct |
52 |
Correct |
17 ms |
2684 KB |
Output is correct |
53 |
Correct |
10 ms |
2184 KB |
Output is correct |
54 |
Correct |
2 ms |
1408 KB |
Output is correct |
55 |
Correct |
3 ms |
1408 KB |
Output is correct |
56 |
Correct |
650 ms |
2688 KB |
Output is correct |
57 |
Correct |
3 ms |
1916 KB |
Output is correct |
58 |
Correct |
687 ms |
1792 KB |
Output is correct |
59 |
Correct |
8 ms |
1792 KB |
Output is correct |
60 |
Correct |
8 ms |
1792 KB |
Output is correct |
61 |
Correct |
8 ms |
1792 KB |
Output is correct |
62 |
Correct |
12 ms |
2432 KB |
Output is correct |
63 |
Correct |
33 ms |
2808 KB |
Output is correct |
64 |
Correct |
34 ms |
3828 KB |
Output is correct |
65 |
Correct |
41 ms |
3828 KB |
Output is correct |
66 |
Correct |
57 ms |
3956 KB |
Output is correct |
67 |
Correct |
44 ms |
3828 KB |
Output is correct |