#include <bits/stdc++.h>
using namespace std;
const int INF = 1e9;
int32_t main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, m;
cin >> n >> m;
vector<vector<array<int, 2>>> adj(n);
int src, dest;
for(int i = 0; i < m; i++){
int b, p;
cin >> b >> p;
if(i == 0) src = b;
if(i == 1) dest = b;
for(int j = b+p; j < n; j += p)
adj[b].push_back({j, (j-b)/p});
for(int j = b-p; j >= 0; j -= p)
adj[b].push_back({j, (b-j)/p});
}
vector<int> dist(n, INF);
dist[src] = 0;
priority_queue<array<int, 2>, vector<array<int, 2>>, greater<array<int, 2>>> pq;
pq.push({0, src});
while(!pq.empty()){
auto [d, node] = pq.top();
pq.pop();
for(auto& [v, nd] : adj[node]){
if(dist[v] <= dist[node] + nd)
continue;
dist[v] = dist[node] + nd;
pq.push({dist[v], v});
}
}
cout << (dist[dest] == INF ? -1 : dist[dest]) << '\n';
return 0;
}
Compilation message
skyscraper.cpp: In function 'int32_t main()':
skyscraper.cpp:42:20: warning: 'dest' may be used uninitialized in this function [-Wmaybe-uninitialized]
42 | cout << (dist[dest] == INF ? -1 : dist[dest]) << '\n';
| ^
skyscraper.cpp:28:10: warning: 'src' may be used uninitialized in this function [-Wmaybe-uninitialized]
28 | dist[src] = 0;
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
492 KB |
Output is correct |
| 12 |
Correct |
5 ms |
2532 KB |
Output is correct |
| 13 |
Correct |
5 ms |
2544 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
492 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
384 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
492 KB |
Output is correct |
| 12 |
Correct |
5 ms |
2532 KB |
Output is correct |
| 13 |
Correct |
5 ms |
2544 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
2 ms |
620 KB |
Output is correct |
| 18 |
Correct |
1 ms |
492 KB |
Output is correct |
| 19 |
Correct |
1 ms |
492 KB |
Output is correct |
| 20 |
Correct |
65 ms |
32492 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
1 ms |
492 KB |
Output is correct |
| 24 |
Correct |
136 ms |
620 KB |
Output is correct |
| 25 |
Correct |
2 ms |
492 KB |
Output is correct |
| 26 |
Correct |
75 ms |
33476 KB |
Output is correct |
| 27 |
Correct |
72 ms |
33476 KB |
Output is correct |
| 28 |
Correct |
2 ms |
620 KB |
Output is correct |
| 29 |
Correct |
4 ms |
1260 KB |
Output is correct |
| 30 |
Correct |
2 ms |
748 KB |
Output is correct |
| 31 |
Correct |
2 ms |
876 KB |
Output is correct |
| 32 |
Correct |
2 ms |
748 KB |
Output is correct |
| 33 |
Correct |
6 ms |
2028 KB |
Output is correct |
| 34 |
Correct |
5 ms |
1900 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
492 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
492 KB |
Output is correct |
| 12 |
Correct |
5 ms |
2564 KB |
Output is correct |
| 13 |
Correct |
5 ms |
2544 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
44 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
89 ms |
620 KB |
Output is correct |
| 18 |
Correct |
88 ms |
492 KB |
Output is correct |
| 19 |
Correct |
1 ms |
512 KB |
Output is correct |
| 20 |
Correct |
66 ms |
32492 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
1 ms |
492 KB |
Output is correct |
| 24 |
Correct |
2 ms |
620 KB |
Output is correct |
| 25 |
Correct |
2 ms |
492 KB |
Output is correct |
| 26 |
Correct |
74 ms |
33476 KB |
Output is correct |
| 27 |
Correct |
72 ms |
33460 KB |
Output is correct |
| 28 |
Correct |
2 ms |
748 KB |
Output is correct |
| 29 |
Correct |
4 ms |
1260 KB |
Output is correct |
| 30 |
Correct |
2 ms |
748 KB |
Output is correct |
| 31 |
Correct |
2 ms |
876 KB |
Output is correct |
| 32 |
Correct |
2 ms |
748 KB |
Output is correct |
| 33 |
Correct |
5 ms |
2028 KB |
Output is correct |
| 34 |
Correct |
5 ms |
1900 KB |
Output is correct |
| 35 |
Correct |
11 ms |
2156 KB |
Output is correct |
| 36 |
Correct |
2 ms |
620 KB |
Output is correct |
| 37 |
Correct |
12 ms |
3948 KB |
Output is correct |
| 38 |
Correct |
191 ms |
3308 KB |
Output is correct |
| 39 |
Correct |
192 ms |
3564 KB |
Output is correct |
| 40 |
Correct |
14 ms |
3308 KB |
Output is correct |
| 41 |
Correct |
13 ms |
3180 KB |
Output is correct |
| 42 |
Runtime error |
570 ms |
262148 KB |
Execution killed with signal 9 |
| 43 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
492 KB |
Output is correct |
| 12 |
Correct |
5 ms |
2532 KB |
Output is correct |
| 13 |
Correct |
5 ms |
2544 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
43 ms |
364 KB |
Output is correct |
| 17 |
Correct |
2 ms |
620 KB |
Output is correct |
| 18 |
Correct |
1 ms |
492 KB |
Output is correct |
| 19 |
Correct |
1 ms |
492 KB |
Output is correct |
| 20 |
Correct |
67 ms |
32620 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
1 ms |
492 KB |
Output is correct |
| 24 |
Correct |
2 ms |
620 KB |
Output is correct |
| 25 |
Correct |
2 ms |
492 KB |
Output is correct |
| 26 |
Correct |
75 ms |
33476 KB |
Output is correct |
| 27 |
Correct |
114 ms |
33472 KB |
Output is correct |
| 28 |
Correct |
2 ms |
620 KB |
Output is correct |
| 29 |
Correct |
4 ms |
1260 KB |
Output is correct |
| 30 |
Correct |
2 ms |
748 KB |
Output is correct |
| 31 |
Correct |
2 ms |
876 KB |
Output is correct |
| 32 |
Correct |
2 ms |
748 KB |
Output is correct |
| 33 |
Correct |
6 ms |
2028 KB |
Output is correct |
| 34 |
Correct |
6 ms |
1900 KB |
Output is correct |
| 35 |
Correct |
9 ms |
2156 KB |
Output is correct |
| 36 |
Correct |
2 ms |
620 KB |
Output is correct |
| 37 |
Correct |
13 ms |
3948 KB |
Output is correct |
| 38 |
Correct |
13 ms |
3308 KB |
Output is correct |
| 39 |
Correct |
13 ms |
3456 KB |
Output is correct |
| 40 |
Correct |
13 ms |
3308 KB |
Output is correct |
| 41 |
Correct |
13 ms |
3180 KB |
Output is correct |
| 42 |
Runtime error |
387 ms |
262144 KB |
Execution killed with signal 9 |
| 43 |
Halted |
0 ms |
0 KB |
- |
