#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define f first
#define s second
#define x first
#define y second
#define elif else if
#define endl '\n'
#define all(x) begin(x), end(x)
#define k 173
template <typename T>
ostream& operator << (ostream& os, const vector<T>& a) {
os << '[';
bool E = false;
for(const T& x : a) {
if(E) os << ' ';
os << x;
E = true;
}
return os << ']';
}
int n,m;
int b[30069],p[30069];
vector<pair<int,int>> grph[30069];
int done[(k+1)*30069];
priority_queue<pair<int,int>,vector<pair<int,int>>,greater<pair<int,int>>> pq;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cin>>n>>m;
for (int i = 0; i < m; i++) {
cin>>b[i]>>p[i];
if (p[i]<=k) {
grph[b[i]].push_back({0,b[i]+p[i]*30069});
}
else{
for (int j = b[i]%p[i]; j < n; j+=p[i]) {
grph[b[i]].push_back({abs(b[i]-j)/p[i],j});
}
}
}
pq.push({0,b[0]});
while (pq.size()) {
auto temp=pq.top();
pq.pop();
if (done[temp.s]) {
continue;
}
done[temp.s]=true;
if (temp.s==b[1]) {
cout<<temp.f<<endl;
return 0;
}
if (temp.s<30069) {
for (auto i : grph[temp.s]) {
if (!done[i.s]) {
pq.push({temp.f+i.f,i.s});
}
}
}
else{
int i=temp.s%30069,j=temp.s/30069;
pq.push({temp.f,i});
if (i>=j) {
pq.push({temp.f+1,temp.s-j});
}
if (i+j<n) {
pq.push({temp.f+1,temp.s+j});
}
}
}
cout<<-1<<endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
972 KB |
Output is correct |
2 |
Correct |
1 ms |
972 KB |
Output is correct |
3 |
Correct |
1 ms |
932 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 |
# |
결과 |
실행 시간 |
메모리 |
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 |
1100 KB |
Output is correct |
10 |
Correct |
2 ms |
1356 KB |
Output is correct |
11 |
Correct |
1 ms |
1100 KB |
Output is correct |
12 |
Correct |
1 ms |
1100 KB |
Output is correct |
13 |
Correct |
1 ms |
1100 KB |
Output is correct |
14 |
Correct |
3 ms |
1356 KB |
Output is correct |
15 |
Correct |
3 ms |
1388 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
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 |
976 KB |
Output is correct |
8 |
Correct |
1 ms |
972 KB |
Output is correct |
9 |
Correct |
1 ms |
1100 KB |
Output is correct |
10 |
Correct |
1 ms |
1356 KB |
Output is correct |
11 |
Correct |
1 ms |
1100 KB |
Output is correct |
12 |
Correct |
1 ms |
1100 KB |
Output is correct |
13 |
Correct |
1 ms |
972 KB |
Output is correct |
14 |
Correct |
3 ms |
1356 KB |
Output is correct |
15 |
Correct |
2 ms |
1404 KB |
Output is correct |
16 |
Correct |
1 ms |
972 KB |
Output is correct |
17 |
Correct |
2 ms |
1996 KB |
Output is correct |
18 |
Correct |
1 ms |
972 KB |
Output is correct |
19 |
Correct |
1 ms |
972 KB |
Output is correct |
20 |
Correct |
2 ms |
1100 KB |
Output is correct |
21 |
Correct |
1 ms |
972 KB |
Output is correct |
22 |
Correct |
2 ms |
972 KB |
Output is correct |
23 |
Correct |
3 ms |
1740 KB |
Output is correct |
24 |
Correct |
3 ms |
1996 KB |
Output is correct |
25 |
Correct |
2 ms |
1100 KB |
Output is correct |
26 |
Correct |
2 ms |
1100 KB |
Output is correct |
27 |
Correct |
2 ms |
1484 KB |
Output is correct |
28 |
Correct |
3 ms |
2124 KB |
Output is correct |
29 |
Correct |
20 ms |
1424 KB |
Output is correct |
30 |
Correct |
5 ms |
1104 KB |
Output is correct |
31 |
Correct |
10 ms |
1228 KB |
Output is correct |
32 |
Correct |
8 ms |
1228 KB |
Output is correct |
33 |
Correct |
39 ms |
1888 KB |
Output is correct |
34 |
Correct |
23 ms |
1612 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
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 |
1100 KB |
Output is correct |
10 |
Correct |
1 ms |
1356 KB |
Output is correct |
11 |
Correct |
1 ms |
1100 KB |
Output is correct |
12 |
Correct |
1 ms |
1100 KB |
Output is correct |
13 |
Correct |
1 ms |
976 KB |
Output is correct |
14 |
Correct |
4 ms |
1356 KB |
Output is correct |
15 |
Correct |
2 ms |
1356 KB |
Output is correct |
16 |
Correct |
1 ms |
972 KB |
Output is correct |
17 |
Correct |
3 ms |
2000 KB |
Output is correct |
18 |
Correct |
1 ms |
972 KB |
Output is correct |
19 |
Correct |
1 ms |
972 KB |
Output is correct |
20 |
Correct |
2 ms |
1100 KB |
Output is correct |
21 |
Correct |
1 ms |
972 KB |
Output is correct |
22 |
Correct |
1 ms |
972 KB |
Output is correct |
23 |
Correct |
3 ms |
1740 KB |
Output is correct |
24 |
Correct |
3 ms |
1996 KB |
Output is correct |
25 |
Correct |
2 ms |
1100 KB |
Output is correct |
26 |
Correct |
2 ms |
1100 KB |
Output is correct |
27 |
Correct |
2 ms |
1484 KB |
Output is correct |
28 |
Correct |
4 ms |
2124 KB |
Output is correct |
29 |
Correct |
25 ms |
1492 KB |
Output is correct |
30 |
Correct |
5 ms |
1100 KB |
Output is correct |
31 |
Correct |
12 ms |
1296 KB |
Output is correct |
32 |
Correct |
7 ms |
1228 KB |
Output is correct |
33 |
Correct |
40 ms |
1864 KB |
Output is correct |
34 |
Correct |
23 ms |
1612 KB |
Output is correct |
35 |
Correct |
10 ms |
3556 KB |
Output is correct |
36 |
Correct |
3 ms |
1356 KB |
Output is correct |
37 |
Correct |
9 ms |
3516 KB |
Output is correct |
38 |
Correct |
10 ms |
3660 KB |
Output is correct |
39 |
Correct |
9 ms |
2232 KB |
Output is correct |
40 |
Correct |
9 ms |
2380 KB |
Output is correct |
41 |
Correct |
11 ms |
3376 KB |
Output is correct |
42 |
Correct |
6 ms |
1680 KB |
Output is correct |
43 |
Correct |
9 ms |
2124 KB |
Output is correct |
44 |
Correct |
8 ms |
1652 KB |
Output is correct |
45 |
Correct |
164 ms |
6400 KB |
Output is correct |
46 |
Correct |
81 ms |
6092 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
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 |
2 ms |
972 KB |
Output is correct |
7 |
Correct |
2 ms |
972 KB |
Output is correct |
8 |
Correct |
1 ms |
972 KB |
Output is correct |
9 |
Correct |
2 ms |
1100 KB |
Output is correct |
10 |
Correct |
1 ms |
1356 KB |
Output is correct |
11 |
Correct |
1 ms |
1100 KB |
Output is correct |
12 |
Correct |
1 ms |
1100 KB |
Output is correct |
13 |
Correct |
1 ms |
1100 KB |
Output is correct |
14 |
Correct |
3 ms |
1356 KB |
Output is correct |
15 |
Correct |
2 ms |
1356 KB |
Output is correct |
16 |
Correct |
1 ms |
972 KB |
Output is correct |
17 |
Correct |
3 ms |
1996 KB |
Output is correct |
18 |
Correct |
1 ms |
972 KB |
Output is correct |
19 |
Correct |
1 ms |
972 KB |
Output is correct |
20 |
Correct |
2 ms |
1120 KB |
Output is correct |
21 |
Correct |
1 ms |
972 KB |
Output is correct |
22 |
Correct |
1 ms |
972 KB |
Output is correct |
23 |
Correct |
3 ms |
1740 KB |
Output is correct |
24 |
Correct |
4 ms |
1996 KB |
Output is correct |
25 |
Correct |
2 ms |
1100 KB |
Output is correct |
26 |
Correct |
2 ms |
1100 KB |
Output is correct |
27 |
Correct |
2 ms |
1484 KB |
Output is correct |
28 |
Correct |
4 ms |
2124 KB |
Output is correct |
29 |
Correct |
20 ms |
1444 KB |
Output is correct |
30 |
Correct |
5 ms |
1100 KB |
Output is correct |
31 |
Correct |
10 ms |
1296 KB |
Output is correct |
32 |
Correct |
8 ms |
1228 KB |
Output is correct |
33 |
Correct |
39 ms |
1864 KB |
Output is correct |
34 |
Correct |
25 ms |
1616 KB |
Output is correct |
35 |
Correct |
12 ms |
3660 KB |
Output is correct |
36 |
Correct |
2 ms |
1356 KB |
Output is correct |
37 |
Correct |
9 ms |
3532 KB |
Output is correct |
38 |
Correct |
12 ms |
3660 KB |
Output is correct |
39 |
Correct |
11 ms |
2252 KB |
Output is correct |
40 |
Correct |
11 ms |
2380 KB |
Output is correct |
41 |
Correct |
10 ms |
3276 KB |
Output is correct |
42 |
Correct |
6 ms |
1744 KB |
Output is correct |
43 |
Correct |
6 ms |
2124 KB |
Output is correct |
44 |
Correct |
6 ms |
1652 KB |
Output is correct |
45 |
Correct |
163 ms |
6364 KB |
Output is correct |
46 |
Correct |
81 ms |
6032 KB |
Output is correct |
47 |
Correct |
20 ms |
7244 KB |
Output is correct |
48 |
Correct |
9 ms |
2592 KB |
Output is correct |
49 |
Correct |
9 ms |
2380 KB |
Output is correct |
50 |
Correct |
7 ms |
2156 KB |
Output is correct |
51 |
Correct |
19 ms |
4396 KB |
Output is correct |
52 |
Correct |
23 ms |
4432 KB |
Output is correct |
53 |
Correct |
10 ms |
1996 KB |
Output is correct |
54 |
Correct |
2 ms |
1228 KB |
Output is correct |
55 |
Correct |
3 ms |
1356 KB |
Output is correct |
56 |
Correct |
11 ms |
2380 KB |
Output is correct |
57 |
Correct |
2 ms |
1228 KB |
Output is correct |
58 |
Correct |
14 ms |
3532 KB |
Output is correct |
59 |
Correct |
12 ms |
3832 KB |
Output is correct |
60 |
Correct |
13 ms |
4128 KB |
Output is correct |
61 |
Correct |
12 ms |
3960 KB |
Output is correct |
62 |
Correct |
41 ms |
13848 KB |
Output is correct |
63 |
Correct |
288 ms |
32968 KB |
Output is correct |
64 |
Correct |
340 ms |
41520 KB |
Output is correct |
65 |
Execution timed out |
1102 ms |
52476 KB |
Time limit exceeded |
66 |
Halted |
0 ms |
0 KB |
- |