#include<bits/stdc++.h>
#define pb push_back
#define int long long
#define mp make_pair
using namespace std;
const int inf = 1e18;
const int mod = 1e9 + 7;
const int N = 3e4 + 5;
vector<int> adj[N];
int32_t main(){
ios_base::sync_with_stdio(false), cin.tie();
int n, m;
cin>>n>>m;
int start = 0, finish = 0;
for(int i = 0; i < m; i++){
int b, p;
cin>>b>>p;
if(i == 0) start = b;
if(i == 1) finish = b;
adj[b].pb(p);
}
priority_queue<pair<int, int> > pq;
vector<int> best(N, inf), vis(N);
best[start] = 0;
pq.push(mp(0, start));
while(pq.size()){
int node = pq.top().second;
int len = pq.top().first * (-1);
pq.pop();
if(vis[node]) continue;
vis[node] = 1;
for(auto itr: adj[node]){
int dis = 1;
for(int i = node + itr; i < n; i += itr){
if(best[i] > best[node] + dis){
pq.push(mp(-(best[node] + dis), i));
best[i] = best[node] + dis;
}
dis++;
}
dis = 1;
for(int i = node - itr; i >= 0; i -= itr){
if(best[i] > best[node] + dis){
pq.push(mp(-(best[node] + dis), i));
best[i] = best[node] + dis;
}
dis++;
}
}
}
if(best[finish] == inf) cout<<-1<<endl;
else cout<<best[finish]<<endl;
return 0;
}
Compilation message
skyscraper.cpp: In function 'int32_t main()':
skyscraper.cpp:34:13: warning: unused variable 'len' [-Wunused-variable]
34 | int len = pq.top().first * (-1);
| ^~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 2 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1628 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 2 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 14 |
Correct |
2 ms |
1676 KB |
Output is correct |
| 15 |
Correct |
1 ms |
1628 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 2 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 14 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 15 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1880 KB |
Output is correct |
| 17 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 18 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 19 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 20 |
Correct |
4 ms |
1624 KB |
Output is correct |
| 21 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 23 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 24 |
Correct |
1 ms |
1688 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1640 KB |
Output is correct |
| 26 |
Correct |
3 ms |
1632 KB |
Output is correct |
| 27 |
Correct |
3 ms |
1624 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 29 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 30 |
Correct |
2 ms |
1628 KB |
Output is correct |
| 31 |
Correct |
2 ms |
1628 KB |
Output is correct |
| 32 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 33 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 34 |
Correct |
2 ms |
1880 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 2 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1424 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1780 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 14 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 15 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 17 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 18 |
Correct |
1 ms |
1644 KB |
Output is correct |
| 19 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 20 |
Correct |
4 ms |
1624 KB |
Output is correct |
| 21 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 23 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1628 KB |
Output is correct |
| 25 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 26 |
Correct |
3 ms |
1628 KB |
Output is correct |
| 27 |
Correct |
3 ms |
1628 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1704 KB |
Output is correct |
| 29 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 30 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 31 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 32 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 33 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 34 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 35 |
Correct |
5 ms |
2140 KB |
Output is correct |
| 36 |
Correct |
2 ms |
1684 KB |
Output is correct |
| 37 |
Correct |
5 ms |
2140 KB |
Output is correct |
| 38 |
Correct |
7 ms |
2396 KB |
Output is correct |
| 39 |
Correct |
7 ms |
2396 KB |
Output is correct |
| 40 |
Correct |
7 ms |
2396 KB |
Output is correct |
| 41 |
Correct |
6 ms |
2536 KB |
Output is correct |
| 42 |
Correct |
41 ms |
2020 KB |
Output is correct |
| 43 |
Correct |
40 ms |
2020 KB |
Output is correct |
| 44 |
Correct |
39 ms |
2224 KB |
Output is correct |
| 45 |
Correct |
6 ms |
2400 KB |
Output is correct |
| 46 |
Correct |
6 ms |
2400 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1424 KB |
Output is correct |
| 2 |
Correct |
2 ms |
1632 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1632 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1632 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1892 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1636 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1640 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1640 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1636 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1640 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1640 KB |
Output is correct |
| 12 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 14 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 15 |
Correct |
2 ms |
1628 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 17 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 18 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 19 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 20 |
Correct |
4 ms |
1628 KB |
Output is correct |
| 21 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 23 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1628 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1628 KB |
Output is correct |
| 26 |
Correct |
3 ms |
1628 KB |
Output is correct |
| 27 |
Correct |
3 ms |
1628 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 29 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 30 |
Correct |
1 ms |
1672 KB |
Output is correct |
| 31 |
Correct |
1 ms |
1628 KB |
Output is correct |
| 32 |
Correct |
1 ms |
1624 KB |
Output is correct |
| 33 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 34 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 35 |
Correct |
5 ms |
2140 KB |
Output is correct |
| 36 |
Correct |
2 ms |
1628 KB |
Output is correct |
| 37 |
Correct |
5 ms |
2140 KB |
Output is correct |
| 38 |
Correct |
7 ms |
2568 KB |
Output is correct |
| 39 |
Correct |
6 ms |
2396 KB |
Output is correct |
| 40 |
Correct |
9 ms |
2648 KB |
Output is correct |
| 41 |
Correct |
7 ms |
2396 KB |
Output is correct |
| 42 |
Correct |
41 ms |
2008 KB |
Output is correct |
| 43 |
Correct |
39 ms |
2012 KB |
Output is correct |
| 44 |
Correct |
40 ms |
2052 KB |
Output is correct |
| 45 |
Correct |
5 ms |
2396 KB |
Output is correct |
| 46 |
Correct |
5 ms |
2456 KB |
Output is correct |
| 47 |
Correct |
13 ms |
3292 KB |
Output is correct |
| 48 |
Correct |
5 ms |
2224 KB |
Output is correct |
| 49 |
Correct |
5 ms |
2136 KB |
Output is correct |
| 50 |
Correct |
4 ms |
2136 KB |
Output is correct |
| 51 |
Correct |
20 ms |
4564 KB |
Output is correct |
| 52 |
Correct |
20 ms |
3544 KB |
Output is correct |
| 53 |
Correct |
14 ms |
3544 KB |
Output is correct |
| 54 |
Correct |
2 ms |
2012 KB |
Output is correct |
| 55 |
Correct |
3 ms |
2016 KB |
Output is correct |
| 56 |
Correct |
545 ms |
3396 KB |
Output is correct |
| 57 |
Correct |
42 ms |
7884 KB |
Output is correct |
| 58 |
Correct |
567 ms |
2348 KB |
Output is correct |
| 59 |
Correct |
556 ms |
2648 KB |
Output is correct |
| 60 |
Correct |
548 ms |
2644 KB |
Output is correct |
| 61 |
Correct |
474 ms |
2524 KB |
Output is correct |
| 62 |
Correct |
11 ms |
2904 KB |
Output is correct |
| 63 |
Correct |
19 ms |
4440 KB |
Output is correct |
| 64 |
Correct |
23 ms |
4336 KB |
Output is correct |
| 65 |
Correct |
21 ms |
4304 KB |
Output is correct |
| 66 |
Correct |
28 ms |
7376 KB |
Output is correct |
| 67 |
Correct |
30 ms |
7632 KB |
Output is correct |
