#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define MASK(i) (1ULL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ll mask){return __builtin_ctzll(mask);}
int logOf(ll mask){return 63 - __builtin_clzll(mask);}
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
template <class T1, class T2>
bool maximize(T1 &a, T2 b){
if (a < b) {a = b; return true;}
return false;
}
template <class T1, class T2>
bool minimize(T1 &a, T2 b){
if (a > b) {a = b; return true;}
return false;
}
template <class T>
void printArr(T& container, string separator = " ", string finish = "\n", ostream &out = cout){
for(auto item: container) out << item << separator;
out << finish;
}
template <class T>
void remove_dup(vector<T> &a){
sort(ALL(a));
a.resize(unique(ALL(a)) - a.begin());
}
const int N = 3e4;
const int INF = 1e9 + 69;
int n, m;
vector<int> a[N];
bool activated[N];
map<int, int> dis[N];
int main(void){
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> m;
vector<pair<int, int>> dog(m);
for(int i = 0; i<m; ++i){
cin >> dog[i].first >> dog[i].second;
}
pair<int, int> dog0 = dog[0], dog1 = dog[1];
remove_dup(dog);
for(auto i: dog) a[i.first].push_back(i.second);
int o_cnt = 0;
int ans = INF;
deque<pair<int, int>> q;
q.push_back(dog0); dis[dog0.first][dog0.second] = 0;
while(q.size()){
pair<int, int> u = q.front(); q.pop_front();
int d = dis[u.first][u.second];
o_cnt++;
if (o_cnt > 1e7) exit(1);
if (u.first == dog1.first) {
minimize(ans, d);
break;
}
for(int i = -u.second; i <= u.second; i += u.second * 2) {
pair<int, int> v = {u.first + i, u.second};
if (v.first < 0 || v.first >= n) continue;
if (!dis[v.first].count(v.second)) {
dis[v.first][v.second] = d + 1;
q.push_back(v);
}
}
if (!activated[u.first]){
activated[u.first] = true;
for(int j: a[u.first]){
for(int i = -j; i <= j; i += j * 2) {
pair<int, int> v = {u.first + i, j};
if (v.first < 0 || v.first >= n) continue;
if (!dis[v.first].count(v.second)) {
dis[v.first][v.second] = d + 1;
q.push_back(v);
}
}
}
}
}
if (ans == INF) cout << -1 << "\n";
else cout << ans << "\n";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
2 ms |
2392 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
8 |
Correct |
1 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
2396 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2396 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
1 ms |
2600 KB |
Output is correct |
14 |
Correct |
2 ms |
2652 KB |
Output is correct |
15 |
Correct |
2 ms |
2652 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2320 KB |
Output is correct |
4 |
Correct |
1 ms |
2392 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
8 |
Correct |
1 ms |
2392 KB |
Output is correct |
9 |
Correct |
1 ms |
2396 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2396 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
1 ms |
2392 KB |
Output is correct |
14 |
Correct |
3 ms |
2804 KB |
Output is correct |
15 |
Correct |
2 ms |
2652 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
2 ms |
2652 KB |
Output is correct |
18 |
Correct |
1 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
2 ms |
2652 KB |
Output is correct |
21 |
Correct |
1 ms |
2396 KB |
Output is correct |
22 |
Correct |
1 ms |
2648 KB |
Output is correct |
23 |
Correct |
3 ms |
2648 KB |
Output is correct |
24 |
Correct |
2 ms |
2904 KB |
Output is correct |
25 |
Correct |
2 ms |
2652 KB |
Output is correct |
26 |
Correct |
2 ms |
2652 KB |
Output is correct |
27 |
Correct |
2 ms |
2808 KB |
Output is correct |
28 |
Correct |
4 ms |
3420 KB |
Output is correct |
29 |
Correct |
11 ms |
5212 KB |
Output is correct |
30 |
Correct |
3 ms |
3164 KB |
Output is correct |
31 |
Correct |
6 ms |
3932 KB |
Output is correct |
32 |
Correct |
4 ms |
3676 KB |
Output is correct |
33 |
Correct |
26 ms |
7988 KB |
Output is correct |
34 |
Correct |
13 ms |
5468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
2 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
8 |
Correct |
1 ms |
2652 KB |
Output is correct |
9 |
Correct |
1 ms |
2396 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2396 KB |
Output is correct |
12 |
Correct |
2 ms |
2396 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
2 ms |
2652 KB |
Output is correct |
15 |
Correct |
2 ms |
2652 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
2 ms |
2652 KB |
Output is correct |
18 |
Correct |
1 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
2 ms |
2648 KB |
Output is correct |
21 |
Correct |
1 ms |
2396 KB |
Output is correct |
22 |
Correct |
1 ms |
2396 KB |
Output is correct |
23 |
Correct |
2 ms |
2652 KB |
Output is correct |
24 |
Correct |
2 ms |
2908 KB |
Output is correct |
25 |
Correct |
2 ms |
2652 KB |
Output is correct |
26 |
Correct |
2 ms |
2652 KB |
Output is correct |
27 |
Correct |
2 ms |
2652 KB |
Output is correct |
28 |
Correct |
4 ms |
3420 KB |
Output is correct |
29 |
Correct |
11 ms |
5212 KB |
Output is correct |
30 |
Correct |
3 ms |
3164 KB |
Output is correct |
31 |
Correct |
6 ms |
3932 KB |
Output is correct |
32 |
Correct |
4 ms |
3676 KB |
Output is correct |
33 |
Correct |
25 ms |
8088 KB |
Output is correct |
34 |
Correct |
12 ms |
5720 KB |
Output is correct |
35 |
Correct |
10 ms |
4188 KB |
Output is correct |
36 |
Correct |
2 ms |
2652 KB |
Output is correct |
37 |
Correct |
8 ms |
3932 KB |
Output is correct |
38 |
Correct |
9 ms |
3596 KB |
Output is correct |
39 |
Correct |
7 ms |
2908 KB |
Output is correct |
40 |
Correct |
7 ms |
3164 KB |
Output is correct |
41 |
Correct |
8 ms |
3164 KB |
Output is correct |
42 |
Correct |
4 ms |
2908 KB |
Output is correct |
43 |
Correct |
5 ms |
2908 KB |
Output is correct |
44 |
Correct |
5 ms |
2908 KB |
Output is correct |
45 |
Correct |
201 ms |
25480 KB |
Output is correct |
46 |
Correct |
83 ms |
15904 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2392 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
1 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
2392 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2396 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
2 ms |
2652 KB |
Output is correct |
15 |
Correct |
2 ms |
2652 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
2 ms |
2652 KB |
Output is correct |
18 |
Correct |
2 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
2 ms |
2652 KB |
Output is correct |
21 |
Correct |
2 ms |
2396 KB |
Output is correct |
22 |
Correct |
1 ms |
2396 KB |
Output is correct |
23 |
Correct |
2 ms |
2652 KB |
Output is correct |
24 |
Correct |
2 ms |
2908 KB |
Output is correct |
25 |
Correct |
2 ms |
2536 KB |
Output is correct |
26 |
Correct |
2 ms |
2648 KB |
Output is correct |
27 |
Correct |
2 ms |
2652 KB |
Output is correct |
28 |
Correct |
4 ms |
3420 KB |
Output is correct |
29 |
Correct |
11 ms |
5284 KB |
Output is correct |
30 |
Correct |
3 ms |
3164 KB |
Output is correct |
31 |
Correct |
6 ms |
3932 KB |
Output is correct |
32 |
Correct |
4 ms |
3676 KB |
Output is correct |
33 |
Correct |
25 ms |
8192 KB |
Output is correct |
34 |
Correct |
13 ms |
5464 KB |
Output is correct |
35 |
Correct |
10 ms |
4188 KB |
Output is correct |
36 |
Correct |
2 ms |
2652 KB |
Output is correct |
37 |
Correct |
8 ms |
4020 KB |
Output is correct |
38 |
Correct |
9 ms |
3676 KB |
Output is correct |
39 |
Correct |
8 ms |
2908 KB |
Output is correct |
40 |
Correct |
7 ms |
3160 KB |
Output is correct |
41 |
Correct |
8 ms |
3164 KB |
Output is correct |
42 |
Correct |
4 ms |
2908 KB |
Output is correct |
43 |
Correct |
5 ms |
2908 KB |
Output is correct |
44 |
Correct |
5 ms |
2908 KB |
Output is correct |
45 |
Correct |
212 ms |
25424 KB |
Output is correct |
46 |
Correct |
88 ms |
15864 KB |
Output is correct |
47 |
Correct |
9 ms |
3932 KB |
Output is correct |
48 |
Correct |
6 ms |
3128 KB |
Output is correct |
49 |
Correct |
6 ms |
3164 KB |
Output is correct |
50 |
Correct |
4 ms |
2908 KB |
Output is correct |
51 |
Correct |
15 ms |
5636 KB |
Output is correct |
52 |
Correct |
17 ms |
5980 KB |
Output is correct |
53 |
Correct |
9 ms |
3676 KB |
Output is correct |
54 |
Correct |
2 ms |
3164 KB |
Output is correct |
55 |
Correct |
3 ms |
3676 KB |
Output is correct |
56 |
Correct |
11 ms |
4956 KB |
Output is correct |
57 |
Correct |
2 ms |
2652 KB |
Output is correct |
58 |
Correct |
9 ms |
5744 KB |
Output is correct |
59 |
Correct |
9 ms |
5468 KB |
Output is correct |
60 |
Correct |
9 ms |
5468 KB |
Output is correct |
61 |
Correct |
9 ms |
5212 KB |
Output is correct |
62 |
Correct |
113 ms |
24024 KB |
Output is correct |
63 |
Execution timed out |
1035 ms |
80112 KB |
Time limit exceeded |
64 |
Halted |
0 ms |
0 KB |
- |