#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;
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]; arr[ind[i]].pb(i);
}
val[2] = MAXN;
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;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
11 ms |
23900 KB |
Output is correct |
2 |
Correct |
10 ms |
23900 KB |
Output is correct |
3 |
Correct |
10 ms |
23900 KB |
Output is correct |
4 |
Correct |
11 ms |
23900 KB |
Output is correct |
5 |
Correct |
11 ms |
23916 KB |
Output is correct |
6 |
Correct |
11 ms |
23968 KB |
Output is correct |
7 |
Correct |
10 ms |
23944 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
11 ms |
23896 KB |
Output is correct |
2 |
Correct |
11 ms |
23960 KB |
Output is correct |
3 |
Correct |
10 ms |
23900 KB |
Output is correct |
4 |
Correct |
11 ms |
23944 KB |
Output is correct |
5 |
Correct |
11 ms |
23912 KB |
Output is correct |
6 |
Correct |
11 ms |
23896 KB |
Output is correct |
7 |
Correct |
11 ms |
23900 KB |
Output is correct |
8 |
Correct |
11 ms |
23900 KB |
Output is correct |
9 |
Correct |
11 ms |
23960 KB |
Output is correct |
10 |
Correct |
11 ms |
23900 KB |
Output is correct |
11 |
Correct |
11 ms |
23900 KB |
Output is correct |
12 |
Correct |
11 ms |
24152 KB |
Output is correct |
13 |
Correct |
11 ms |
23900 KB |
Output is correct |
14 |
Correct |
12 ms |
24128 KB |
Output is correct |
15 |
Correct |
13 ms |
23900 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
23900 KB |
Output is correct |
2 |
Correct |
14 ms |
24076 KB |
Output is correct |
3 |
Correct |
11 ms |
23896 KB |
Output is correct |
4 |
Correct |
10 ms |
23900 KB |
Output is correct |
5 |
Correct |
10 ms |
23900 KB |
Output is correct |
6 |
Correct |
10 ms |
23900 KB |
Output is correct |
7 |
Correct |
10 ms |
23896 KB |
Output is correct |
8 |
Correct |
9 ms |
23816 KB |
Output is correct |
9 |
Correct |
11 ms |
23900 KB |
Output is correct |
10 |
Correct |
10 ms |
23900 KB |
Output is correct |
11 |
Correct |
10 ms |
23900 KB |
Output is correct |
12 |
Correct |
10 ms |
23900 KB |
Output is correct |
13 |
Correct |
11 ms |
23808 KB |
Output is correct |
14 |
Correct |
11 ms |
23900 KB |
Output is correct |
15 |
Correct |
11 ms |
23956 KB |
Output is correct |
16 |
Correct |
12 ms |
23896 KB |
Output is correct |
17 |
Correct |
11 ms |
24040 KB |
Output is correct |
18 |
Correct |
10 ms |
23900 KB |
Output is correct |
19 |
Correct |
10 ms |
23896 KB |
Output is correct |
20 |
Correct |
10 ms |
23900 KB |
Output is correct |
21 |
Correct |
10 ms |
23900 KB |
Output is correct |
22 |
Correct |
11 ms |
23900 KB |
Output is correct |
23 |
Correct |
11 ms |
23992 KB |
Output is correct |
24 |
Correct |
12 ms |
24032 KB |
Output is correct |
25 |
Correct |
12 ms |
23960 KB |
Output is correct |
26 |
Correct |
9 ms |
23900 KB |
Output is correct |
27 |
Correct |
11 ms |
23900 KB |
Output is correct |
28 |
Incorrect |
10 ms |
23900 KB |
Output isn't correct |
29 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
23900 KB |
Output is correct |
2 |
Correct |
10 ms |
23964 KB |
Output is correct |
3 |
Correct |
10 ms |
23900 KB |
Output is correct |
4 |
Correct |
11 ms |
23900 KB |
Output is correct |
5 |
Correct |
10 ms |
23720 KB |
Output is correct |
6 |
Correct |
10 ms |
23956 KB |
Output is correct |
7 |
Correct |
10 ms |
23760 KB |
Output is correct |
8 |
Correct |
10 ms |
23900 KB |
Output is correct |
9 |
Correct |
10 ms |
23900 KB |
Output is correct |
10 |
Correct |
10 ms |
23900 KB |
Output is correct |
11 |
Correct |
10 ms |
24008 KB |
Output is correct |
12 |
Correct |
11 ms |
23824 KB |
Output is correct |
13 |
Correct |
10 ms |
23900 KB |
Output is correct |
14 |
Correct |
11 ms |
23900 KB |
Output is correct |
15 |
Correct |
11 ms |
23944 KB |
Output is correct |
16 |
Correct |
10 ms |
23900 KB |
Output is correct |
17 |
Correct |
12 ms |
23904 KB |
Output is correct |
18 |
Correct |
12 ms |
23900 KB |
Output is correct |
19 |
Correct |
11 ms |
23992 KB |
Output is correct |
20 |
Correct |
10 ms |
23900 KB |
Output is correct |
21 |
Correct |
10 ms |
23916 KB |
Output is correct |
22 |
Correct |
11 ms |
23900 KB |
Output is correct |
23 |
Correct |
10 ms |
23804 KB |
Output is correct |
24 |
Correct |
11 ms |
23824 KB |
Output is correct |
25 |
Correct |
11 ms |
23900 KB |
Output is correct |
26 |
Correct |
11 ms |
24016 KB |
Output is correct |
27 |
Correct |
11 ms |
23900 KB |
Output is correct |
28 |
Incorrect |
10 ms |
23904 KB |
Output isn't correct |
29 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
23900 KB |
Output is correct |
2 |
Correct |
10 ms |
23900 KB |
Output is correct |
3 |
Correct |
10 ms |
23900 KB |
Output is correct |
4 |
Correct |
10 ms |
23960 KB |
Output is correct |
5 |
Correct |
11 ms |
24156 KB |
Output is correct |
6 |
Correct |
10 ms |
23900 KB |
Output is correct |
7 |
Correct |
11 ms |
23900 KB |
Output is correct |
8 |
Correct |
10 ms |
23900 KB |
Output is correct |
9 |
Correct |
10 ms |
23944 KB |
Output is correct |
10 |
Correct |
10 ms |
23900 KB |
Output is correct |
11 |
Correct |
10 ms |
23900 KB |
Output is correct |
12 |
Correct |
10 ms |
24044 KB |
Output is correct |
13 |
Correct |
11 ms |
23900 KB |
Output is correct |
14 |
Correct |
11 ms |
24056 KB |
Output is correct |
15 |
Correct |
10 ms |
23900 KB |
Output is correct |
16 |
Correct |
11 ms |
23896 KB |
Output is correct |
17 |
Correct |
10 ms |
23900 KB |
Output is correct |
18 |
Correct |
10 ms |
24008 KB |
Output is correct |
19 |
Correct |
10 ms |
23900 KB |
Output is correct |
20 |
Correct |
12 ms |
23896 KB |
Output is correct |
21 |
Correct |
10 ms |
23900 KB |
Output is correct |
22 |
Correct |
10 ms |
23900 KB |
Output is correct |
23 |
Correct |
10 ms |
23900 KB |
Output is correct |
24 |
Correct |
10 ms |
23900 KB |
Output is correct |
25 |
Correct |
10 ms |
23900 KB |
Output is correct |
26 |
Correct |
10 ms |
23900 KB |
Output is correct |
27 |
Correct |
9 ms |
23836 KB |
Output is correct |
28 |
Incorrect |
10 ms |
23900 KB |
Output isn't correct |
29 |
Halted |
0 ms |
0 KB |
- |