#ifdef LOCAL
#include "local.h"
#else
#include <bits/stdc++.h>
#define debug(...)
#define DB(...)
#endif
using namespace std;
const bool __initialization = []() {
cin.tie(nullptr)->sync_with_stdio(false);
#define TASK "empty"
if (fopen(TASK".inp", "r")) {
(void)(!freopen(TASK".inp", "r", stdin));
(void)(!freopen(TASK".out", "w", stdout)); }
cout << setprecision(12) << fixed;
return true;
}();
using ll = long long;
using ld = long double;
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define For(i, l, r) for (int i = (l); i <= (r); ++i)
#define Ford(i, r, l) for (int i = (r); i >= (l); --i)
#define Rep(i, n) For (i, 0, (n) - 1)
#define Repd(i, n) Ford (i, (n) - 1, 0)
#define Fe(...) for (auto __VA_ARGS__)
template <class C> inline int isz(const C& c) { return static_cast<int>(c.size()); }
template <class T> inline bool chmin(T& a, const T& b) { return (a > b) ? a = b, true : false; }
template <class T> inline bool chmax(T& a, const T& b) { return (a < b) ? a = b, true : false; }
constexpr ld eps = 1e-9;
constexpr int inf = 1e9;
constexpr ll linf = 1e18;
// =============================================================================
constexpr int maxn = 3e4 + 5;
struct Link {
int v, c;
};
struct Data {
int u, du;
bool operator<(const Data& o) const {
return du > o.du;
}
};
int len, n;
int a[maxn], pw[maxn];
vector<Link> g[maxn];
int d[maxn];
priority_queue<Data> q;
void Dijkstra() {
memset(d, 0x3f, sizeof(int) * n);
d[0] = 0;
q.push({0, d[0]});
while (isz(q)) {
auto [u, du] = q.top(); q.pop();
if (du != d[u]) continue;
Fe (&[v, c] : g[u]) {
if (chmin(d[v], d[u] + c)) {
q.push({v, d[v]});
}
}
}
}
signed main() {
cin >> len >> n;
Rep (i, n) cin >> a[i] >> pw[i];
Rep (i, n) {
Rep (j, n) {
if (i == j) continue;
int dist = abs(a[i] - a[j]);
if (dist % pw[i] == 0) {
g[i].push_back({j, dist / pw[i]});
}
}
}
Dijkstra();
int ans = d[1];
if (ans >= inf) ans = -1;
cout << ans << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
972 KB |
Output is correct |
2 |
Correct |
1 ms |
972 KB |
Output is correct |
3 |
Correct |
1 ms |
972 KB |
Output is correct |
4 |
Correct |
1 ms |
972 KB |
Output is correct |
5 |
Correct |
2 ms |
972 KB |
Output is correct |
6 |
Correct |
1 ms |
972 KB |
Output is correct |
7 |
Correct |
1 ms |
972 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
972 KB |
Output is correct |
2 |
Correct |
1 ms |
972 KB |
Output is correct |
3 |
Correct |
1 ms |
972 KB |
Output is correct |
4 |
Correct |
1 ms |
972 KB |
Output is correct |
5 |
Correct |
1 ms |
972 KB |
Output is correct |
6 |
Correct |
1 ms |
972 KB |
Output is correct |
7 |
Correct |
1 ms |
972 KB |
Output is correct |
8 |
Correct |
1 ms |
972 KB |
Output is correct |
9 |
Correct |
1 ms |
972 KB |
Output is correct |
10 |
Correct |
2 ms |
1100 KB |
Output is correct |
11 |
Correct |
25 ms |
3140 KB |
Output is correct |
12 |
Correct |
62 ms |
32964 KB |
Output is correct |
13 |
Correct |
68 ms |
33064 KB |
Output is correct |
14 |
Correct |
25 ms |
2536 KB |
Output is correct |
15 |
Correct |
25 ms |
2520 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
972 KB |
Output is correct |
2 |
Correct |
1 ms |
972 KB |
Output is correct |
3 |
Correct |
1 ms |
972 KB |
Output is correct |
4 |
Correct |
1 ms |
972 KB |
Output is correct |
5 |
Correct |
1 ms |
972 KB |
Output is correct |
6 |
Correct |
1 ms |
972 KB |
Output is correct |
7 |
Correct |
1 ms |
972 KB |
Output is correct |
8 |
Correct |
1 ms |
972 KB |
Output is correct |
9 |
Correct |
1 ms |
972 KB |
Output is correct |
10 |
Correct |
2 ms |
1100 KB |
Output is correct |
11 |
Correct |
25 ms |
3120 KB |
Output is correct |
12 |
Correct |
58 ms |
32904 KB |
Output is correct |
13 |
Correct |
71 ms |
33252 KB |
Output is correct |
14 |
Correct |
26 ms |
2508 KB |
Output is correct |
15 |
Correct |
26 ms |
2508 KB |
Output is correct |
16 |
Correct |
5 ms |
1228 KB |
Output is correct |
17 |
Correct |
20 ms |
1624 KB |
Output is correct |
18 |
Correct |
7 ms |
1100 KB |
Output is correct |
19 |
Correct |
3 ms |
972 KB |
Output is correct |
20 |
Correct |
60 ms |
33092 KB |
Output is correct |
21 |
Correct |
9 ms |
1076 KB |
Output is correct |
22 |
Correct |
4 ms |
972 KB |
Output is correct |
23 |
Correct |
6 ms |
1100 KB |
Output is correct |
24 |
Correct |
21 ms |
1212 KB |
Output is correct |
25 |
Correct |
23 ms |
1140 KB |
Output is correct |
26 |
Correct |
60 ms |
30140 KB |
Output is correct |
27 |
Correct |
61 ms |
30916 KB |
Output is correct |
28 |
Correct |
24 ms |
1276 KB |
Output is correct |
29 |
Correct |
5 ms |
1228 KB |
Output is correct |
30 |
Correct |
1 ms |
972 KB |
Output is correct |
31 |
Correct |
3 ms |
1100 KB |
Output is correct |
32 |
Correct |
2 ms |
1100 KB |
Output is correct |
33 |
Correct |
25 ms |
2492 KB |
Output is correct |
34 |
Correct |
24 ms |
2500 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
972 KB |
Output is correct |
2 |
Correct |
1 ms |
972 KB |
Output is correct |
3 |
Correct |
1 ms |
972 KB |
Output is correct |
4 |
Correct |
1 ms |
972 KB |
Output is correct |
5 |
Correct |
1 ms |
972 KB |
Output is correct |
6 |
Correct |
1 ms |
972 KB |
Output is correct |
7 |
Correct |
1 ms |
972 KB |
Output is correct |
8 |
Correct |
1 ms |
972 KB |
Output is correct |
9 |
Correct |
1 ms |
972 KB |
Output is correct |
10 |
Correct |
2 ms |
1100 KB |
Output is correct |
11 |
Correct |
25 ms |
3136 KB |
Output is correct |
12 |
Correct |
60 ms |
32888 KB |
Output is correct |
13 |
Correct |
64 ms |
33068 KB |
Output is correct |
14 |
Correct |
26 ms |
2500 KB |
Output is correct |
15 |
Correct |
28 ms |
2532 KB |
Output is correct |
16 |
Correct |
6 ms |
1228 KB |
Output is correct |
17 |
Correct |
19 ms |
1612 KB |
Output is correct |
18 |
Correct |
7 ms |
1100 KB |
Output is correct |
19 |
Correct |
3 ms |
972 KB |
Output is correct |
20 |
Correct |
59 ms |
33080 KB |
Output is correct |
21 |
Correct |
8 ms |
1096 KB |
Output is correct |
22 |
Correct |
3 ms |
972 KB |
Output is correct |
23 |
Correct |
5 ms |
1100 KB |
Output is correct |
24 |
Correct |
19 ms |
1228 KB |
Output is correct |
25 |
Correct |
22 ms |
1140 KB |
Output is correct |
26 |
Correct |
61 ms |
30068 KB |
Output is correct |
27 |
Correct |
60 ms |
30992 KB |
Output is correct |
28 |
Correct |
23 ms |
1220 KB |
Output is correct |
29 |
Correct |
4 ms |
1228 KB |
Output is correct |
30 |
Correct |
1 ms |
972 KB |
Output is correct |
31 |
Correct |
4 ms |
1100 KB |
Output is correct |
32 |
Correct |
2 ms |
1100 KB |
Output is correct |
33 |
Correct |
24 ms |
2508 KB |
Output is correct |
34 |
Correct |
25 ms |
2500 KB |
Output is correct |
35 |
Execution timed out |
1086 ms |
11216 KB |
Time limit exceeded |
36 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
972 KB |
Output is correct |
2 |
Correct |
1 ms |
972 KB |
Output is correct |
3 |
Correct |
1 ms |
972 KB |
Output is correct |
4 |
Correct |
1 ms |
972 KB |
Output is correct |
5 |
Correct |
1 ms |
972 KB |
Output is correct |
6 |
Correct |
1 ms |
972 KB |
Output is correct |
7 |
Correct |
1 ms |
972 KB |
Output is correct |
8 |
Correct |
1 ms |
924 KB |
Output is correct |
9 |
Correct |
1 ms |
972 KB |
Output is correct |
10 |
Correct |
2 ms |
1100 KB |
Output is correct |
11 |
Correct |
27 ms |
3196 KB |
Output is correct |
12 |
Correct |
63 ms |
32960 KB |
Output is correct |
13 |
Correct |
59 ms |
33064 KB |
Output is correct |
14 |
Correct |
24 ms |
2512 KB |
Output is correct |
15 |
Correct |
24 ms |
2432 KB |
Output is correct |
16 |
Correct |
5 ms |
1228 KB |
Output is correct |
17 |
Correct |
20 ms |
1612 KB |
Output is correct |
18 |
Correct |
7 ms |
1100 KB |
Output is correct |
19 |
Correct |
3 ms |
972 KB |
Output is correct |
20 |
Correct |
68 ms |
33052 KB |
Output is correct |
21 |
Correct |
8 ms |
1100 KB |
Output is correct |
22 |
Correct |
4 ms |
1064 KB |
Output is correct |
23 |
Correct |
6 ms |
1068 KB |
Output is correct |
24 |
Correct |
19 ms |
1192 KB |
Output is correct |
25 |
Correct |
21 ms |
1108 KB |
Output is correct |
26 |
Correct |
57 ms |
30180 KB |
Output is correct |
27 |
Correct |
58 ms |
30916 KB |
Output is correct |
28 |
Correct |
24 ms |
1228 KB |
Output is correct |
29 |
Correct |
5 ms |
1356 KB |
Output is correct |
30 |
Correct |
1 ms |
972 KB |
Output is correct |
31 |
Correct |
3 ms |
1100 KB |
Output is correct |
32 |
Correct |
3 ms |
1100 KB |
Output is correct |
33 |
Correct |
26 ms |
2500 KB |
Output is correct |
34 |
Correct |
24 ms |
2536 KB |
Output is correct |
35 |
Execution timed out |
1083 ms |
11236 KB |
Time limit exceeded |
36 |
Halted |
0 ms |
0 KB |
- |