#include <bits/stdc++.h>
using namespace std;
#define int long long
priority_queue<pair<int,int>> q;
vector<pair<int,int>> adj[6000000];
bool visited[6000000];
int n;
const int threshold = 173;
void adddoge(int power,int building){
if(power>threshold){
int minimum = building - power*(building/power);
for (int i = minimum; i < n; i += power)
adj[building*174].emplace_back(i*174,1);
} else {
adj[building*174].emplace_back(building*174+power,0);
}
}
int32_t main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int m;
cin >> n >> m;
int base,tar,bp,tp;
cin>>base>>bp>>tar>>tp;
adddoge(bp,base);
adddoge(tp,tar);
for(int i=2;i<m;i++){
int b,p;cin>>b>>p;
adddoge(p,b);
}
for(int i=0;i<n;i++){
int b = i*174;
for(int j=b+1;j<b+174;j++){
adj[j].emplace_back(b,0);
}
}
for(int power=1;power<=173;power++){
int offset = 174*power;
for(int i=power;i<n;i++){
adj[i*174+power].emplace_back(i*174+power-offset,1);
}
for(int i=n-power-1;i>=0;i--){
adj[i*174+power].emplace_back(i*174+power+offset,1);
}
}
base*=174;tar*=174;
q.emplace(0, base);
while(!q.empty()){
auto curr = q.top();q.pop();
if(visited[curr.second])continue;
visited[curr.second]=true;
if(curr.second==tar){
cout << -curr.first << '\n';
return 0;
}
for(auto&i:adj[curr.second])if(!visited[i.first])q.emplace(curr.first-i.second,i.first);
}
cout << "-1\n";
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
70 ms |
142828 KB |
Output is correct |
2 |
Correct |
45 ms |
142676 KB |
Output is correct |
3 |
Correct |
45 ms |
142932 KB |
Output is correct |
4 |
Correct |
44 ms |
142888 KB |
Output is correct |
5 |
Correct |
46 ms |
142940 KB |
Output is correct |
6 |
Correct |
47 ms |
142936 KB |
Output is correct |
7 |
Correct |
48 ms |
142924 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
46 ms |
142820 KB |
Output is correct |
2 |
Correct |
44 ms |
142676 KB |
Output is correct |
3 |
Correct |
46 ms |
142940 KB |
Output is correct |
4 |
Correct |
46 ms |
142868 KB |
Output is correct |
5 |
Correct |
45 ms |
142928 KB |
Output is correct |
6 |
Correct |
45 ms |
142928 KB |
Output is correct |
7 |
Correct |
45 ms |
142928 KB |
Output is correct |
8 |
Correct |
46 ms |
142960 KB |
Output is correct |
9 |
Correct |
46 ms |
143316 KB |
Output is correct |
10 |
Correct |
51 ms |
143564 KB |
Output is correct |
11 |
Correct |
47 ms |
143640 KB |
Output is correct |
12 |
Correct |
52 ms |
143840 KB |
Output is correct |
13 |
Correct |
52 ms |
143760 KB |
Output is correct |
14 |
Correct |
47 ms |
143728 KB |
Output is correct |
15 |
Correct |
50 ms |
143688 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
45 ms |
142796 KB |
Output is correct |
2 |
Correct |
45 ms |
142952 KB |
Output is correct |
3 |
Correct |
51 ms |
142940 KB |
Output is correct |
4 |
Correct |
47 ms |
142836 KB |
Output is correct |
5 |
Correct |
45 ms |
142928 KB |
Output is correct |
6 |
Correct |
45 ms |
142932 KB |
Output is correct |
7 |
Correct |
45 ms |
142892 KB |
Output is correct |
8 |
Correct |
46 ms |
143072 KB |
Output is correct |
9 |
Correct |
46 ms |
143452 KB |
Output is correct |
10 |
Correct |
47 ms |
143704 KB |
Output is correct |
11 |
Correct |
46 ms |
143704 KB |
Output is correct |
12 |
Correct |
49 ms |
143720 KB |
Output is correct |
13 |
Correct |
47 ms |
143696 KB |
Output is correct |
14 |
Correct |
49 ms |
143636 KB |
Output is correct |
15 |
Correct |
46 ms |
143708 KB |
Output is correct |
16 |
Correct |
48 ms |
144720 KB |
Output is correct |
17 |
Incorrect |
69 ms |
152400 KB |
Output isn't correct |
18 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
47 ms |
142944 KB |
Output is correct |
2 |
Correct |
46 ms |
142940 KB |
Output is correct |
3 |
Correct |
46 ms |
142932 KB |
Output is correct |
4 |
Correct |
46 ms |
143188 KB |
Output is correct |
5 |
Correct |
46 ms |
142932 KB |
Output is correct |
6 |
Correct |
45 ms |
142936 KB |
Output is correct |
7 |
Correct |
45 ms |
142984 KB |
Output is correct |
8 |
Correct |
45 ms |
142928 KB |
Output is correct |
9 |
Correct |
45 ms |
143188 KB |
Output is correct |
10 |
Correct |
47 ms |
143708 KB |
Output is correct |
11 |
Correct |
47 ms |
143608 KB |
Output is correct |
12 |
Correct |
47 ms |
143716 KB |
Output is correct |
13 |
Correct |
46 ms |
143696 KB |
Output is correct |
14 |
Correct |
48 ms |
143700 KB |
Output is correct |
15 |
Correct |
47 ms |
143696 KB |
Output is correct |
16 |
Correct |
49 ms |
144728 KB |
Output is correct |
17 |
Incorrect |
73 ms |
152492 KB |
Output isn't correct |
18 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
45 ms |
142940 KB |
Output is correct |
2 |
Correct |
46 ms |
142676 KB |
Output is correct |
3 |
Correct |
44 ms |
142940 KB |
Output is correct |
4 |
Correct |
45 ms |
142940 KB |
Output is correct |
5 |
Correct |
45 ms |
142928 KB |
Output is correct |
6 |
Correct |
47 ms |
142932 KB |
Output is correct |
7 |
Correct |
46 ms |
142940 KB |
Output is correct |
8 |
Correct |
45 ms |
143004 KB |
Output is correct |
9 |
Correct |
46 ms |
143260 KB |
Output is correct |
10 |
Correct |
46 ms |
143696 KB |
Output is correct |
11 |
Correct |
46 ms |
143700 KB |
Output is correct |
12 |
Correct |
47 ms |
143708 KB |
Output is correct |
13 |
Correct |
47 ms |
143700 KB |
Output is correct |
14 |
Correct |
47 ms |
143696 KB |
Output is correct |
15 |
Correct |
47 ms |
143704 KB |
Output is correct |
16 |
Correct |
50 ms |
144720 KB |
Output is correct |
17 |
Incorrect |
73 ms |
152400 KB |
Output isn't correct |
18 |
Halted |
0 ms |
0 KB |
- |