/*
author: CRISTIANO RONALDO
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,
tree_order_statistics_node_update> indexed_set;
can do: find_by_order, order_of_key
__builtin_clz(x): the number of zeros at the beginning of the number
__builtin_ctz(x): the number of zeros at the end of the number
__builtin_popcount(x): the number of ones in the number
__builtin_parity(x): the parity (even or odd) of the number of ones
mt19937 rng(15);
mt19937 bruh(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rofl(chrono::steady_clock::now().time_since_epoch().count());
*/
#include <bits/stdc++.h>
#define ll long long
#define all(a) a.begin(), a.end()
#define F first
#define S second
#define pb push_back
#define ull unsigned long long
#define ld long double
#define lv v+v
#define rv v+v+1
#define files freopen("aa.txt", "r", stdin), freopen("aa.txt", "w", stdout)
#define pll pair <long long, long long>
#define pii pair <int, int>
using namespace std;
long long mod = 1e9 + 7;
const ll N = 3e4 + 10;
const ll M = 2e3 + 10;
const ll P = 337ll;
const ld EPS = 1e-7;
const ll block = 325;
const ll inf = 2e18;
ll n,m,b[N],p[N], d[30010];
vector <ll> road[30010];
// v[j] - куда может прыгнуть собака j
// cost[j][u] - цена прыжка собаки j в точку u
// road[j] - Какие собаки живут в точке j
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
cin>>n>>m;
for(ll i = 0; i<m; i++) {
cin>>b[i]>>p[i];
d[i] = inf;
road[b[i]].pb(i);
}
set <pll> q;
q.insert({0,0});
d[0] = 0;
ll ver, ttt, j;
while(!q.empty()) {
ver = (*q.begin()).S; ttt = (*q.begin()).F; q.erase(q.begin());
if(ttt > d[ver]) {continue;}
j = ver;
for(ll i = 1; b[j] + i * p[j] < n; i += 1) {
if(!road[b[j] + i * p[j]].empty()) {
for(auto jj : road[b[j] + i * p[j]]) {
if(d[jj] > d[ver] + i) {
d[jj] = d[ver] + i;
q.insert({d[jj], jj});
}
}
}
}
for(ll i = 0; b[j] - i * p[j] >= 0; i += 1) {
if(!road[b[j] - i * p[j]].empty()) {
for(auto jj : road[b[j] - i * p[j]]) {
if(d[jj] > d[ver] + i) {
d[jj] = d[ver] + i;
q.insert({d[jj], jj});
}
}
}
}
}
cout<<(d[1] == inf ? -1 : d[1]);
return 0;
}
// equal, min, max, 1, random, build
/*
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
0 ms |
1116 KB |
Output is correct |
3 |
Correct |
0 ms |
1116 KB |
Output is correct |
4 |
Correct |
0 ms |
1116 KB |
Output is correct |
5 |
Correct |
0 ms |
1116 KB |
Output is correct |
6 |
Correct |
0 ms |
1116 KB |
Output is correct |
7 |
Correct |
0 ms |
1116 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
1116 KB |
Output is correct |
2 |
Correct |
0 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 |
0 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1128 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 |
1412 KB |
Output is correct |
12 |
Correct |
4 ms |
1372 KB |
Output is correct |
13 |
Correct |
4 ms |
1372 KB |
Output is correct |
14 |
Correct |
2 ms |
1368 KB |
Output is correct |
15 |
Correct |
2 ms |
1368 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
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 |
0 ms |
1116 KB |
Output is correct |
6 |
Correct |
0 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
0 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 |
1372 KB |
Output is correct |
12 |
Correct |
4 ms |
1372 KB |
Output is correct |
13 |
Correct |
4 ms |
1372 KB |
Output is correct |
14 |
Correct |
2 ms |
1372 KB |
Output is correct |
15 |
Correct |
2 ms |
1372 KB |
Output is correct |
16 |
Correct |
1 ms |
1128 KB |
Output is correct |
17 |
Correct |
2 ms |
1316 KB |
Output is correct |
18 |
Correct |
1 ms |
1112 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
9 ms |
1372 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 |
1116 KB |
Output is correct |
25 |
Correct |
1 ms |
1372 KB |
Output is correct |
26 |
Correct |
9 ms |
1368 KB |
Output is correct |
27 |
Correct |
7 ms |
1360 KB |
Output is correct |
28 |
Correct |
1 ms |
1116 KB |
Output is correct |
29 |
Correct |
1 ms |
1116 KB |
Output is correct |
30 |
Correct |
1 ms |
1368 KB |
Output is correct |
31 |
Correct |
1 ms |
1116 KB |
Output is correct |
32 |
Correct |
1 ms |
1368 KB |
Output is correct |
33 |
Correct |
3 ms |
1372 KB |
Output is correct |
34 |
Correct |
2 ms |
1372 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
0 ms |
1116 KB |
Output is correct |
3 |
Correct |
1 ms |
1116 KB |
Output is correct |
4 |
Correct |
0 ms |
1116 KB |
Output is correct |
5 |
Correct |
0 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 |
0 ms |
1116 KB |
Output is correct |
9 |
Correct |
0 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
1 ms |
1372 KB |
Output is correct |
12 |
Correct |
4 ms |
1116 KB |
Output is correct |
13 |
Correct |
4 ms |
1116 KB |
Output is correct |
14 |
Correct |
2 ms |
1372 KB |
Output is correct |
15 |
Correct |
2 ms |
1368 KB |
Output is correct |
16 |
Correct |
1 ms |
1112 KB |
Output is correct |
17 |
Correct |
2 ms |
1368 KB |
Output is correct |
18 |
Correct |
1 ms |
1116 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
9 ms |
1372 KB |
Output is correct |
21 |
Correct |
1 ms |
1184 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 |
8 ms |
1368 KB |
Output is correct |
27 |
Correct |
7 ms |
1116 KB |
Output is correct |
28 |
Correct |
1 ms |
1112 KB |
Output is correct |
29 |
Correct |
1 ms |
1112 KB |
Output is correct |
30 |
Correct |
1 ms |
1116 KB |
Output is correct |
31 |
Correct |
1 ms |
1116 KB |
Output is correct |
32 |
Correct |
1 ms |
1116 KB |
Output is correct |
33 |
Correct |
2 ms |
1372 KB |
Output is correct |
34 |
Correct |
2 ms |
1372 KB |
Output is correct |
35 |
Correct |
23 ms |
5624 KB |
Output is correct |
36 |
Correct |
3 ms |
1628 KB |
Output is correct |
37 |
Correct |
22 ms |
5012 KB |
Output is correct |
38 |
Correct |
34 ms |
7764 KB |
Output is correct |
39 |
Correct |
31 ms |
6236 KB |
Output is correct |
40 |
Correct |
34 ms |
7692 KB |
Output is correct |
41 |
Correct |
31 ms |
7256 KB |
Output is correct |
42 |
Correct |
705 ms |
3804 KB |
Output is correct |
43 |
Correct |
644 ms |
3804 KB |
Output is correct |
44 |
Correct |
768 ms |
3840 KB |
Output is correct |
45 |
Correct |
29 ms |
7256 KB |
Output is correct |
46 |
Correct |
29 ms |
7276 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
0 ms |
1116 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
0 ms |
1116 KB |
Output is correct |
5 |
Correct |
1 ms |
1116 KB |
Output is correct |
6 |
Correct |
1 ms |
1164 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1116 KB |
Output is correct |
9 |
Correct |
0 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
2 ms |
1372 KB |
Output is correct |
12 |
Correct |
4 ms |
1116 KB |
Output is correct |
13 |
Correct |
4 ms |
1116 KB |
Output is correct |
14 |
Correct |
1 ms |
1372 KB |
Output is correct |
15 |
Correct |
1 ms |
1372 KB |
Output is correct |
16 |
Correct |
1 ms |
1112 KB |
Output is correct |
17 |
Correct |
2 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 |
9 ms |
1412 KB |
Output is correct |
21 |
Correct |
1 ms |
1116 KB |
Output is correct |
22 |
Correct |
0 ms |
1116 KB |
Output is correct |
23 |
Correct |
1 ms |
1116 KB |
Output is correct |
24 |
Correct |
1 ms |
1368 KB |
Output is correct |
25 |
Correct |
1 ms |
1372 KB |
Output is correct |
26 |
Correct |
10 ms |
1372 KB |
Output is correct |
27 |
Correct |
7 ms |
1360 KB |
Output is correct |
28 |
Correct |
1 ms |
1116 KB |
Output is correct |
29 |
Correct |
1 ms |
1192 KB |
Output is correct |
30 |
Correct |
1 ms |
1116 KB |
Output is correct |
31 |
Correct |
1 ms |
1116 KB |
Output is correct |
32 |
Correct |
1 ms |
1116 KB |
Output is correct |
33 |
Correct |
2 ms |
1372 KB |
Output is correct |
34 |
Correct |
2 ms |
1372 KB |
Output is correct |
35 |
Correct |
23 ms |
5780 KB |
Output is correct |
36 |
Correct |
3 ms |
1628 KB |
Output is correct |
37 |
Correct |
21 ms |
5212 KB |
Output is correct |
38 |
Correct |
35 ms |
7760 KB |
Output is correct |
39 |
Correct |
30 ms |
6236 KB |
Output is correct |
40 |
Correct |
33 ms |
7772 KB |
Output is correct |
41 |
Correct |
33 ms |
7248 KB |
Output is correct |
42 |
Correct |
671 ms |
3956 KB |
Output is correct |
43 |
Correct |
646 ms |
3804 KB |
Output is correct |
44 |
Correct |
790 ms |
3840 KB |
Output is correct |
45 |
Correct |
31 ms |
7260 KB |
Output is correct |
46 |
Correct |
30 ms |
7256 KB |
Output is correct |
47 |
Correct |
40 ms |
7056 KB |
Output is correct |
48 |
Correct |
4 ms |
2140 KB |
Output is correct |
49 |
Correct |
4 ms |
2008 KB |
Output is correct |
50 |
Correct |
3 ms |
1884 KB |
Output is correct |
51 |
Correct |
31 ms |
6708 KB |
Output is correct |
52 |
Correct |
31 ms |
6224 KB |
Output is correct |
53 |
Correct |
14 ms |
4700 KB |
Output is correct |
54 |
Correct |
1 ms |
1116 KB |
Output is correct |
55 |
Correct |
1 ms |
1116 KB |
Output is correct |
56 |
Execution timed out |
1100 ms |
4632 KB |
Time limit exceeded |
57 |
Halted |
0 ms |
0 KB |
- |