#include <bits/stdc++.h>
//#define int long long
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#define F first
#define S second
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
#define kill(x) cout << x << "\n", exit(0);
#define pii pair<int, int>
#define pll pair<long long, long long>
#define endl "\n"
using namespace std;
typedef long long ll;
// typedef __int128_t lll;
typedef long double ld;
const int MAXN = (int)1e6 + 7;
const int MOD = 998244353;
const ll INF = (ll)1e9 + 7;
int n, m, k, tmp, t, tmp2, tmp3, tmp4, u, v, w, flag, q, ans, N, l, r, mid;
int dis[MAXN], ind[MAXN], val[MAXN];
vector<int> arr[MAXN];
priority_queue<pii, vector<pii>, greater<pii>> pq;
map<int, bool> cnt[MAXN];
inline void relax(int v, int u) {
if (val[v] == val[u]) return;
if (dis[u] <= dis[v]+abs(ind[u]-ind[v])/val[v]) return;
dis[u] = dis[v] + abs(ind[u]-ind[v])/val[v];
pq.push({dis[u], u});
}
int32_t main() {
#ifdef LOCAL
freopen("inp.in", "r", stdin);
freopen("res.out", "w", stdout);
#else
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#endif
cin >> n >> m;
for (int i=1; i<=m; i++) {
cin >> ind[i] >> val[i]; ind[i]++;
if (i == 2) val[i] = MAXN;
if (!cnt[ind[i]][val[i]]) arr[ind[i]].pb(i), cnt[ind[i]][val[i]] = 1;
}
fill_n(dis, m+7, INF);
dis[1] = 0; pq.push({0, 1});
while (pq.size()) {
auto cur = pq.top(); pq.pop();
if (dis[cur.S] != cur.F) continue;
// cout << "! " << cur.S << " " << cur.F << endl;
v = cur.S;
if (v == 2) kill(dis[v]);
for (int i=ind[v]; i<=n; i+=val[v]) for (auto cur:arr[i]) relax(v, cur);
for (int i=ind[v]; i>0; i-=val[v]) for (auto cur:arr[i]) relax(v, cur);
}
kill(-1);
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
31 ms |
70748 KB |
Output is correct |
2 |
Correct |
32 ms |
70848 KB |
Output is correct |
3 |
Correct |
31 ms |
70908 KB |
Output is correct |
4 |
Correct |
40 ms |
70736 KB |
Output is correct |
5 |
Correct |
34 ms |
70740 KB |
Output is correct |
6 |
Correct |
31 ms |
70904 KB |
Output is correct |
7 |
Correct |
28 ms |
70808 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
29 ms |
70748 KB |
Output is correct |
2 |
Correct |
29 ms |
70892 KB |
Output is correct |
3 |
Correct |
30 ms |
70748 KB |
Output is correct |
4 |
Correct |
30 ms |
70744 KB |
Output is correct |
5 |
Correct |
31 ms |
70796 KB |
Output is correct |
6 |
Correct |
29 ms |
70748 KB |
Output is correct |
7 |
Correct |
29 ms |
70748 KB |
Output is correct |
8 |
Correct |
28 ms |
70748 KB |
Output is correct |
9 |
Correct |
30 ms |
70916 KB |
Output is correct |
10 |
Correct |
28 ms |
70744 KB |
Output is correct |
11 |
Correct |
28 ms |
71080 KB |
Output is correct |
12 |
Correct |
27 ms |
70784 KB |
Output is correct |
13 |
Correct |
29 ms |
70872 KB |
Output is correct |
14 |
Correct |
32 ms |
71156 KB |
Output is correct |
15 |
Correct |
30 ms |
70908 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
27 ms |
70744 KB |
Output is correct |
2 |
Correct |
27 ms |
70744 KB |
Output is correct |
3 |
Correct |
28 ms |
70748 KB |
Output is correct |
4 |
Correct |
27 ms |
70748 KB |
Output is correct |
5 |
Correct |
27 ms |
70744 KB |
Output is correct |
6 |
Correct |
27 ms |
70908 KB |
Output is correct |
7 |
Correct |
27 ms |
70812 KB |
Output is correct |
8 |
Correct |
26 ms |
70744 KB |
Output is correct |
9 |
Correct |
27 ms |
70748 KB |
Output is correct |
10 |
Correct |
28 ms |
70800 KB |
Output is correct |
11 |
Correct |
28 ms |
70804 KB |
Output is correct |
12 |
Correct |
27 ms |
70772 KB |
Output is correct |
13 |
Correct |
29 ms |
70916 KB |
Output is correct |
14 |
Correct |
28 ms |
71032 KB |
Output is correct |
15 |
Correct |
30 ms |
70992 KB |
Output is correct |
16 |
Correct |
27 ms |
70888 KB |
Output is correct |
17 |
Correct |
28 ms |
71004 KB |
Output is correct |
18 |
Correct |
27 ms |
71000 KB |
Output is correct |
19 |
Correct |
27 ms |
70748 KB |
Output is correct |
20 |
Correct |
27 ms |
70992 KB |
Output is correct |
21 |
Correct |
27 ms |
70852 KB |
Output is correct |
22 |
Correct |
29 ms |
71004 KB |
Output is correct |
23 |
Correct |
30 ms |
71004 KB |
Output is correct |
24 |
Correct |
31 ms |
70992 KB |
Output is correct |
25 |
Correct |
29 ms |
71004 KB |
Output is correct |
26 |
Correct |
32 ms |
70744 KB |
Output is correct |
27 |
Correct |
31 ms |
70824 KB |
Output is correct |
28 |
Correct |
30 ms |
70996 KB |
Output is correct |
29 |
Correct |
33 ms |
70892 KB |
Output is correct |
30 |
Correct |
29 ms |
70780 KB |
Output is correct |
31 |
Correct |
30 ms |
70796 KB |
Output is correct |
32 |
Correct |
30 ms |
70780 KB |
Output is correct |
33 |
Correct |
32 ms |
71004 KB |
Output is correct |
34 |
Correct |
33 ms |
71008 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
29 ms |
70832 KB |
Output is correct |
2 |
Correct |
27 ms |
70740 KB |
Output is correct |
3 |
Correct |
31 ms |
70736 KB |
Output is correct |
4 |
Correct |
37 ms |
70736 KB |
Output is correct |
5 |
Correct |
28 ms |
70756 KB |
Output is correct |
6 |
Correct |
30 ms |
70748 KB |
Output is correct |
7 |
Correct |
32 ms |
70748 KB |
Output is correct |
8 |
Correct |
27 ms |
70928 KB |
Output is correct |
9 |
Correct |
41 ms |
70740 KB |
Output is correct |
10 |
Correct |
31 ms |
70744 KB |
Output is correct |
11 |
Correct |
36 ms |
70996 KB |
Output is correct |
12 |
Correct |
28 ms |
70748 KB |
Output is correct |
13 |
Correct |
29 ms |
70864 KB |
Output is correct |
14 |
Correct |
44 ms |
70980 KB |
Output is correct |
15 |
Correct |
34 ms |
70992 KB |
Output is correct |
16 |
Correct |
29 ms |
70748 KB |
Output is correct |
17 |
Correct |
29 ms |
71004 KB |
Output is correct |
18 |
Correct |
32 ms |
71000 KB |
Output is correct |
19 |
Correct |
31 ms |
70744 KB |
Output is correct |
20 |
Correct |
29 ms |
70932 KB |
Output is correct |
21 |
Correct |
28 ms |
70996 KB |
Output is correct |
22 |
Correct |
27 ms |
71004 KB |
Output is correct |
23 |
Correct |
31 ms |
71004 KB |
Output is correct |
24 |
Correct |
30 ms |
71004 KB |
Output is correct |
25 |
Correct |
31 ms |
70960 KB |
Output is correct |
26 |
Correct |
30 ms |
70748 KB |
Output is correct |
27 |
Correct |
30 ms |
70740 KB |
Output is correct |
28 |
Correct |
31 ms |
71004 KB |
Output is correct |
29 |
Correct |
30 ms |
71000 KB |
Output is correct |
30 |
Correct |
31 ms |
70744 KB |
Output is correct |
31 |
Correct |
30 ms |
70740 KB |
Output is correct |
32 |
Correct |
32 ms |
70744 KB |
Output is correct |
33 |
Correct |
32 ms |
71000 KB |
Output is correct |
34 |
Correct |
34 ms |
70996 KB |
Output is correct |
35 |
Correct |
53 ms |
73424 KB |
Output is correct |
36 |
Correct |
32 ms |
71260 KB |
Output is correct |
37 |
Correct |
40 ms |
72940 KB |
Output is correct |
38 |
Correct |
47 ms |
74444 KB |
Output is correct |
39 |
Correct |
39 ms |
73032 KB |
Output is correct |
40 |
Correct |
41 ms |
73552 KB |
Output is correct |
41 |
Correct |
43 ms |
74196 KB |
Output is correct |
42 |
Correct |
37 ms |
71260 KB |
Output is correct |
43 |
Correct |
32 ms |
71456 KB |
Output is correct |
44 |
Correct |
36 ms |
71516 KB |
Output is correct |
45 |
Correct |
81 ms |
74008 KB |
Output is correct |
46 |
Correct |
76 ms |
74312 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
32 ms |
70736 KB |
Output is correct |
2 |
Correct |
29 ms |
70748 KB |
Output is correct |
3 |
Correct |
40 ms |
70836 KB |
Output is correct |
4 |
Correct |
29 ms |
70748 KB |
Output is correct |
5 |
Correct |
31 ms |
70744 KB |
Output is correct |
6 |
Correct |
31 ms |
70744 KB |
Output is correct |
7 |
Correct |
32 ms |
70732 KB |
Output is correct |
8 |
Correct |
30 ms |
70932 KB |
Output is correct |
9 |
Correct |
32 ms |
70772 KB |
Output is correct |
10 |
Correct |
31 ms |
70844 KB |
Output is correct |
11 |
Correct |
31 ms |
71004 KB |
Output is correct |
12 |
Correct |
30 ms |
70920 KB |
Output is correct |
13 |
Correct |
32 ms |
70728 KB |
Output is correct |
14 |
Correct |
32 ms |
70992 KB |
Output is correct |
15 |
Correct |
32 ms |
71004 KB |
Output is correct |
16 |
Correct |
32 ms |
70744 KB |
Output is correct |
17 |
Correct |
34 ms |
71004 KB |
Output is correct |
18 |
Correct |
34 ms |
70996 KB |
Output is correct |
19 |
Correct |
31 ms |
70740 KB |
Output is correct |
20 |
Correct |
31 ms |
71000 KB |
Output is correct |
21 |
Correct |
30 ms |
70996 KB |
Output is correct |
22 |
Correct |
31 ms |
70916 KB |
Output is correct |
23 |
Correct |
31 ms |
71008 KB |
Output is correct |
24 |
Correct |
31 ms |
71128 KB |
Output is correct |
25 |
Correct |
30 ms |
71004 KB |
Output is correct |
26 |
Correct |
31 ms |
70748 KB |
Output is correct |
27 |
Correct |
33 ms |
70744 KB |
Output is correct |
28 |
Correct |
31 ms |
71000 KB |
Output is correct |
29 |
Correct |
30 ms |
70996 KB |
Output is correct |
30 |
Correct |
30 ms |
70736 KB |
Output is correct |
31 |
Correct |
30 ms |
70748 KB |
Output is correct |
32 |
Correct |
31 ms |
70736 KB |
Output is correct |
33 |
Correct |
34 ms |
71004 KB |
Output is correct |
34 |
Correct |
32 ms |
71004 KB |
Output is correct |
35 |
Correct |
54 ms |
73420 KB |
Output is correct |
36 |
Correct |
37 ms |
71260 KB |
Output is correct |
37 |
Correct |
40 ms |
72920 KB |
Output is correct |
38 |
Correct |
48 ms |
74124 KB |
Output is correct |
39 |
Correct |
42 ms |
73304 KB |
Output is correct |
40 |
Correct |
41 ms |
73556 KB |
Output is correct |
41 |
Correct |
46 ms |
74188 KB |
Output is correct |
42 |
Correct |
36 ms |
71260 KB |
Output is correct |
43 |
Correct |
33 ms |
71260 KB |
Output is correct |
44 |
Correct |
34 ms |
71508 KB |
Output is correct |
45 |
Correct |
83 ms |
74196 KB |
Output is correct |
46 |
Correct |
76 ms |
74200 KB |
Output is correct |
47 |
Correct |
45 ms |
73832 KB |
Output is correct |
48 |
Correct |
39 ms |
72784 KB |
Output is correct |
49 |
Correct |
39 ms |
72788 KB |
Output is correct |
50 |
Correct |
38 ms |
72280 KB |
Output is correct |
51 |
Correct |
49 ms |
74736 KB |
Output is correct |
52 |
Correct |
50 ms |
74040 KB |
Output is correct |
53 |
Correct |
42 ms |
73820 KB |
Output is correct |
54 |
Correct |
31 ms |
70744 KB |
Output is correct |
55 |
Correct |
30 ms |
70696 KB |
Output is correct |
56 |
Correct |
40 ms |
73772 KB |
Output is correct |
57 |
Correct |
32 ms |
71252 KB |
Output is correct |
58 |
Correct |
29 ms |
71248 KB |
Output is correct |
59 |
Correct |
30 ms |
71516 KB |
Output is correct |
60 |
Correct |
30 ms |
71424 KB |
Output is correct |
61 |
Correct |
31 ms |
71652 KB |
Output is correct |
62 |
Correct |
41 ms |
73940 KB |
Output is correct |
63 |
Correct |
60 ms |
73680 KB |
Output is correct |
64 |
Correct |
59 ms |
73604 KB |
Output is correct |
65 |
Correct |
71 ms |
73748 KB |
Output is correct |
66 |
Correct |
94 ms |
74188 KB |
Output is correct |
67 |
Correct |
89 ms |
74188 KB |
Output is correct |