#include <bits/stdc++.h>
using namespace std;
typedef pair<long long, int> ii;
typedef vector<ii> vii;
int main()
{
//freopen("i.txt","r",stdin);
long long n, m;
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> n >> m;
ii doges[m];
for(int i = 0;i < m;i++){
cin >> doges[i].first >> doges[i].second;
}
//return 0;
set<int> power[n];
for(int i = 0;i < m;i++){
power[doges[i].first].insert(doges[i].second);
}
set<ii> identical;
vii edges[n];
for(int i = 0;i < m;i++){
if(identical.find(doges[i]) != identical.end()) continue;
identical.insert(doges[i]);
long long x = doges[i].first;
long long p = doges[i].second;
long long a = x + p;
long long w = 0;
while(a < n){
w++;
//cout << p << "\n";
edges[x].push_back(ii(w,a));
if(power[a].find(p) != power[a].end()) break;
a += p;
}
a = x - p;
w = 0;
while(a >= 0){
w++;
edges[x].push_back(ii(w,a));
if(power[a].find(p) != power[a].end()) break;
a -= p;
}
}
long long dis[n];
fill(dis,dis+n,102345678901233ll);
dis[doges[0].first] = 0;
priority_queue<ii, vector<ii>, greater<ii> > pq;
pq.push(ii(0,doges[0].first));
while(!pq.empty()){
ii u = pq.top();
pq.pop();
for(int j = 0;j < edges[u.second].size();j++){
ii v = edges[u.second][j];
if(dis[v.second] > v.first + u.first){
dis[v.second] = v.first + u.first;
pq.push(ii(dis[v.second],v.second));
}
}
}
if(dis[doges[1].first] > 10234567891ll) cout << -1;
else cout << dis[doges[1].first];
return 0;
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:67:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j = 0;j < edges[u.second].size();j++){
~~^~~~~~~~~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Correct |
3 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
3 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
3 ms |
256 KB |
Output is correct |
3 |
Correct |
3 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
3 ms |
384 KB |
Output is correct |
8 |
Correct |
3 ms |
384 KB |
Output is correct |
9 |
Correct |
3 ms |
384 KB |
Output is correct |
10 |
Correct |
3 ms |
384 KB |
Output is correct |
11 |
Correct |
4 ms |
640 KB |
Output is correct |
12 |
Correct |
4 ms |
384 KB |
Output is correct |
13 |
Correct |
3 ms |
384 KB |
Output is correct |
14 |
Correct |
4 ms |
768 KB |
Output is correct |
15 |
Correct |
4 ms |
768 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
332 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
4 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
3 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
3 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
3 ms |
384 KB |
Output is correct |
11 |
Correct |
5 ms |
768 KB |
Output is correct |
12 |
Correct |
3 ms |
384 KB |
Output is correct |
13 |
Correct |
3 ms |
384 KB |
Output is correct |
14 |
Correct |
4 ms |
640 KB |
Output is correct |
15 |
Correct |
4 ms |
768 KB |
Output is correct |
16 |
Correct |
4 ms |
512 KB |
Output is correct |
17 |
Correct |
5 ms |
1024 KB |
Output is correct |
18 |
Correct |
4 ms |
768 KB |
Output is correct |
19 |
Correct |
3 ms |
640 KB |
Output is correct |
20 |
Correct |
4 ms |
896 KB |
Output is correct |
21 |
Correct |
4 ms |
512 KB |
Output is correct |
22 |
Correct |
2 ms |
640 KB |
Output is correct |
23 |
Correct |
3 ms |
768 KB |
Output is correct |
24 |
Correct |
6 ms |
1024 KB |
Output is correct |
25 |
Correct |
6 ms |
1024 KB |
Output is correct |
26 |
Correct |
5 ms |
768 KB |
Output is correct |
27 |
Correct |
3 ms |
768 KB |
Output is correct |
28 |
Correct |
4 ms |
1152 KB |
Output is correct |
29 |
Correct |
8 ms |
2304 KB |
Output is correct |
30 |
Correct |
4 ms |
1152 KB |
Output is correct |
31 |
Correct |
4 ms |
1536 KB |
Output is correct |
32 |
Correct |
4 ms |
1280 KB |
Output is correct |
33 |
Correct |
12 ms |
3580 KB |
Output is correct |
34 |
Correct |
10 ms |
3516 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
3 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
3 ms |
384 KB |
Output is correct |
11 |
Correct |
3 ms |
640 KB |
Output is correct |
12 |
Correct |
3 ms |
384 KB |
Output is correct |
13 |
Correct |
2 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
768 KB |
Output is correct |
15 |
Correct |
5 ms |
768 KB |
Output is correct |
16 |
Correct |
3 ms |
512 KB |
Output is correct |
17 |
Correct |
6 ms |
1024 KB |
Output is correct |
18 |
Correct |
4 ms |
768 KB |
Output is correct |
19 |
Correct |
2 ms |
640 KB |
Output is correct |
20 |
Correct |
5 ms |
896 KB |
Output is correct |
21 |
Correct |
3 ms |
512 KB |
Output is correct |
22 |
Correct |
4 ms |
640 KB |
Output is correct |
23 |
Correct |
3 ms |
768 KB |
Output is correct |
24 |
Correct |
5 ms |
1024 KB |
Output is correct |
25 |
Correct |
4 ms |
1024 KB |
Output is correct |
26 |
Correct |
3 ms |
768 KB |
Output is correct |
27 |
Correct |
3 ms |
768 KB |
Output is correct |
28 |
Correct |
4 ms |
1280 KB |
Output is correct |
29 |
Correct |
8 ms |
2304 KB |
Output is correct |
30 |
Correct |
4 ms |
1152 KB |
Output is correct |
31 |
Correct |
5 ms |
1536 KB |
Output is correct |
32 |
Correct |
4 ms |
1280 KB |
Output is correct |
33 |
Correct |
12 ms |
3580 KB |
Output is correct |
34 |
Correct |
11 ms |
3580 KB |
Output is correct |
35 |
Correct |
50 ms |
5756 KB |
Output is correct |
36 |
Correct |
7 ms |
1376 KB |
Output is correct |
37 |
Correct |
39 ms |
7032 KB |
Output is correct |
38 |
Correct |
70 ms |
7796 KB |
Output is correct |
39 |
Correct |
55 ms |
7836 KB |
Output is correct |
40 |
Correct |
57 ms |
7828 KB |
Output is correct |
41 |
Correct |
61 ms |
7800 KB |
Output is correct |
42 |
Correct |
11 ms |
1280 KB |
Output is correct |
43 |
Correct |
9 ms |
1152 KB |
Output is correct |
44 |
Correct |
8 ms |
1280 KB |
Output is correct |
45 |
Correct |
62 ms |
13296 KB |
Output is correct |
46 |
Correct |
73 ms |
13296 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
3 ms |
384 KB |
Output is correct |
4 |
Correct |
3 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
284 KB |
Output is correct |
7 |
Correct |
3 ms |
256 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
3 ms |
512 KB |
Output is correct |
11 |
Correct |
4 ms |
640 KB |
Output is correct |
12 |
Correct |
3 ms |
384 KB |
Output is correct |
13 |
Correct |
3 ms |
384 KB |
Output is correct |
14 |
Correct |
4 ms |
768 KB |
Output is correct |
15 |
Correct |
4 ms |
768 KB |
Output is correct |
16 |
Correct |
3 ms |
512 KB |
Output is correct |
17 |
Correct |
5 ms |
1024 KB |
Output is correct |
18 |
Correct |
3 ms |
768 KB |
Output is correct |
19 |
Correct |
2 ms |
640 KB |
Output is correct |
20 |
Correct |
5 ms |
896 KB |
Output is correct |
21 |
Correct |
3 ms |
512 KB |
Output is correct |
22 |
Correct |
3 ms |
640 KB |
Output is correct |
23 |
Correct |
3 ms |
768 KB |
Output is correct |
24 |
Correct |
5 ms |
1024 KB |
Output is correct |
25 |
Correct |
4 ms |
1024 KB |
Output is correct |
26 |
Correct |
3 ms |
768 KB |
Output is correct |
27 |
Correct |
3 ms |
768 KB |
Output is correct |
28 |
Correct |
5 ms |
1280 KB |
Output is correct |
29 |
Correct |
7 ms |
2304 KB |
Output is correct |
30 |
Correct |
4 ms |
1152 KB |
Output is correct |
31 |
Correct |
6 ms |
1536 KB |
Output is correct |
32 |
Correct |
4 ms |
1276 KB |
Output is correct |
33 |
Correct |
14 ms |
3580 KB |
Output is correct |
34 |
Correct |
6 ms |
3516 KB |
Output is correct |
35 |
Correct |
44 ms |
5756 KB |
Output is correct |
36 |
Correct |
7 ms |
1408 KB |
Output is correct |
37 |
Correct |
59 ms |
7004 KB |
Output is correct |
38 |
Correct |
80 ms |
7800 KB |
Output is correct |
39 |
Correct |
66 ms |
7928 KB |
Output is correct |
40 |
Correct |
50 ms |
7772 KB |
Output is correct |
41 |
Correct |
69 ms |
7800 KB |
Output is correct |
42 |
Correct |
9 ms |
1152 KB |
Output is correct |
43 |
Correct |
7 ms |
1152 KB |
Output is correct |
44 |
Correct |
8 ms |
1280 KB |
Output is correct |
45 |
Correct |
74 ms |
13296 KB |
Output is correct |
46 |
Correct |
73 ms |
13312 KB |
Output is correct |
47 |
Correct |
141 ms |
22380 KB |
Output is correct |
48 |
Correct |
70 ms |
9628 KB |
Output is correct |
49 |
Correct |
44 ms |
7928 KB |
Output is correct |
50 |
Correct |
43 ms |
7284 KB |
Output is correct |
51 |
Correct |
126 ms |
13936 KB |
Output is correct |
52 |
Correct |
119 ms |
14780 KB |
Output is correct |
53 |
Correct |
56 ms |
9328 KB |
Output is correct |
54 |
Correct |
7 ms |
3580 KB |
Output is correct |
55 |
Correct |
11 ms |
4472 KB |
Output is correct |
56 |
Correct |
56 ms |
8060 KB |
Output is correct |
57 |
Correct |
95 ms |
19924 KB |
Output is correct |
58 |
Correct |
15 ms |
5624 KB |
Output is correct |
59 |
Correct |
21 ms |
5896 KB |
Output is correct |
60 |
Correct |
24 ms |
7420 KB |
Output is correct |
61 |
Correct |
28 ms |
6128 KB |
Output is correct |
62 |
Correct |
101 ms |
16156 KB |
Output is correct |
63 |
Correct |
259 ms |
55568 KB |
Output is correct |
64 |
Correct |
265 ms |
72840 KB |
Output is correct |
65 |
Correct |
353 ms |
99304 KB |
Output is correct |
66 |
Correct |
611 ms |
156996 KB |
Output is correct |
67 |
Correct |
642 ms |
156384 KB |
Output is correct |