#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// Ofast, O0, O1, O2, O3, unroll-loops, fast-math, trapv
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
#define Mp make_pair
#define sep ' '
#define endl '\n'
#define F first
#define S second
#define pb push_back
#define all(x) (x).begin(),(x).end()
#define kill(res) cout << res << '\n', exit(0);
#define set_dec(x) cout << fixed << setprecision(x);
#define fast_io ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file_io freopen("input.txt", "r", stdin) ; freopen("output.txt", "w", stdout);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll N = 3e4 + 50;
const ll inf = 15e8;
int n, m, b[N], dist[N];
bool mark[N];
vector<int> pw[N];
void dijk(int v){
fill(dist, dist + N, inf);
priority_queue<pii, vector<pii>, greater<pii>> pq;
pq.push(Mp(0, v)); dist[v] = 0;
while(!pq.empty()){
int v = pq.top().S; pq.pop();
if(mark[v]) continue;
mark[v] = true;
for(int p: pw[v]){
for(int u = v+p, i = 1; u < n; u += p, i++){
if(dist[u] > dist[v] + i){
dist[u] = dist[v] + i;
pq.push(Mp(dist[u], u));
}
}
for(int u = v-p, i = 1; u >= 0; u -= p, i++){
if(dist[u] > dist[v] + i){
dist[u] = dist[v] + i;
pq.push(Mp(dist[u], u));
}
}
}
}
}
int main(){
fast_io;
cin >> n >> m;
int p;
for(int i = 0; i < m; i++){
cin >> b[i] >> p;
pw[b[i]].pb(p);
}
dijk(b[0]);
if(dist[b[1]] >= inf) kill(-1);
kill(dist[b[1]]);
}
# |
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 |
# |
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 |
1368 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 |
1 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1180 KB |
Output is correct |
9 |
Correct |
1 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1112 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 |
1200 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 |
1372 KB |
Output is correct |
18 |
Correct |
1 ms |
1116 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
3 ms |
1420 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 |
1372 KB |
Output is correct |
25 |
Correct |
2 ms |
1184 KB |
Output is correct |
26 |
Correct |
3 ms |
1352 KB |
Output is correct |
27 |
Correct |
3 ms |
1112 KB |
Output is correct |
28 |
Correct |
1 ms |
1368 KB |
Output is correct |
29 |
Correct |
2 ms |
1372 KB |
Output is correct |
30 |
Correct |
1 ms |
1372 KB |
Output is correct |
31 |
Correct |
1 ms |
1372 KB |
Output is correct |
32 |
Correct |
1 ms |
1372 KB |
Output is correct |
33 |
Correct |
2 ms |
1372 KB |
Output is correct |
34 |
Correct |
3 ms |
1372 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 |
1300 KB |
Output is correct |
4 |
Correct |
1 ms |
1116 KB |
Output is correct |
5 |
Correct |
1 ms |
1172 KB |
Output is correct |
6 |
Correct |
1 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1364 KB |
Output is correct |
8 |
Correct |
1 ms |
1112 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 |
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 |
1188 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 |
1116 KB |
Output is correct |
20 |
Correct |
3 ms |
1372 KB |
Output is correct |
21 |
Correct |
1 ms |
1112 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 |
1372 KB |
Output is correct |
25 |
Correct |
1 ms |
1372 KB |
Output is correct |
26 |
Correct |
3 ms |
1116 KB |
Output is correct |
27 |
Correct |
3 ms |
1116 KB |
Output is correct |
28 |
Correct |
1 ms |
1372 KB |
Output is correct |
29 |
Correct |
2 ms |
1372 KB |
Output is correct |
30 |
Correct |
1 ms |
1372 KB |
Output is correct |
31 |
Correct |
1 ms |
1372 KB |
Output is correct |
32 |
Correct |
1 ms |
1372 KB |
Output is correct |
33 |
Correct |
3 ms |
1372 KB |
Output is correct |
34 |
Correct |
2 ms |
1568 KB |
Output is correct |
35 |
Correct |
5 ms |
1884 KB |
Output is correct |
36 |
Correct |
2 ms |
1444 KB |
Output is correct |
37 |
Correct |
4 ms |
1696 KB |
Output is correct |
38 |
Correct |
6 ms |
2132 KB |
Output is correct |
39 |
Correct |
6 ms |
1884 KB |
Output is correct |
40 |
Correct |
6 ms |
2004 KB |
Output is correct |
41 |
Correct |
6 ms |
1884 KB |
Output is correct |
42 |
Correct |
36 ms |
1872 KB |
Output is correct |
43 |
Correct |
36 ms |
1844 KB |
Output is correct |
44 |
Correct |
36 ms |
1692 KB |
Output is correct |
45 |
Correct |
5 ms |
1880 KB |
Output is correct |
46 |
Correct |
5 ms |
1884 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 |
1112 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 |
1136 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 |
1168 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 |
3 ms |
1372 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 |
1372 KB |
Output is correct |
25 |
Correct |
3 ms |
1372 KB |
Output is correct |
26 |
Correct |
3 ms |
1116 KB |
Output is correct |
27 |
Correct |
3 ms |
1112 KB |
Output is correct |
28 |
Correct |
1 ms |
1372 KB |
Output is correct |
29 |
Correct |
2 ms |
1372 KB |
Output is correct |
30 |
Correct |
1 ms |
1372 KB |
Output is correct |
31 |
Correct |
1 ms |
1436 KB |
Output is correct |
32 |
Correct |
1 ms |
1372 KB |
Output is correct |
33 |
Correct |
3 ms |
1372 KB |
Output is correct |
34 |
Correct |
2 ms |
1372 KB |
Output is correct |
35 |
Correct |
5 ms |
1792 KB |
Output is correct |
36 |
Correct |
2 ms |
1368 KB |
Output is correct |
37 |
Correct |
4 ms |
1628 KB |
Output is correct |
38 |
Correct |
6 ms |
1956 KB |
Output is correct |
39 |
Correct |
6 ms |
1884 KB |
Output is correct |
40 |
Correct |
6 ms |
1868 KB |
Output is correct |
41 |
Correct |
6 ms |
1884 KB |
Output is correct |
42 |
Correct |
38 ms |
1704 KB |
Output is correct |
43 |
Correct |
35 ms |
1624 KB |
Output is correct |
44 |
Correct |
36 ms |
1624 KB |
Output is correct |
45 |
Correct |
5 ms |
1880 KB |
Output is correct |
46 |
Correct |
5 ms |
1884 KB |
Output is correct |
47 |
Correct |
12 ms |
2520 KB |
Output is correct |
48 |
Correct |
6 ms |
1968 KB |
Output is correct |
49 |
Correct |
4 ms |
1884 KB |
Output is correct |
50 |
Correct |
3 ms |
1884 KB |
Output is correct |
51 |
Correct |
19 ms |
3284 KB |
Output is correct |
52 |
Correct |
18 ms |
2776 KB |
Output is correct |
53 |
Correct |
10 ms |
2776 KB |
Output is correct |
54 |
Correct |
2 ms |
1372 KB |
Output is correct |
55 |
Correct |
2 ms |
1372 KB |
Output is correct |
56 |
Correct |
496 ms |
2952 KB |
Output is correct |
57 |
Correct |
34 ms |
3532 KB |
Output is correct |
58 |
Correct |
481 ms |
1884 KB |
Output is correct |
59 |
Correct |
479 ms |
1912 KB |
Output is correct |
60 |
Correct |
501 ms |
2012 KB |
Output is correct |
61 |
Correct |
458 ms |
2012 KB |
Output is correct |
62 |
Correct |
6 ms |
2708 KB |
Output is correct |
63 |
Correct |
23 ms |
2856 KB |
Output is correct |
64 |
Correct |
24 ms |
4048 KB |
Output is correct |
65 |
Correct |
35 ms |
4056 KB |
Output is correct |
66 |
Correct |
40 ms |
3788 KB |
Output is correct |
67 |
Correct |
40 ms |
3980 KB |
Output is correct |