#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MAXN = 3e5 + 2;
int n, m, b[MAXN], p[MAXN], dis[MAXN];
vector< int > adj[MAXN];
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin >> n >> m;
for(int i = 0; i < m; i ++){
cin >> b[i] >> p[i];
adj[b[i]].push_back(p[i]);
}
fill(dis, dis + n, INT_MAX);
dis[b[0]] = 0;
priority_queue< pair< int, int> > q;
q.push({0, b[0]});
while( q.size() ){
int v = q.top().second;
q.pop();
for(int i = 0; i < adj[v].size(); i ++){
int u = adj[v][i];
int x = 1;
for(int i = v + u; i < n; i += u){
if( dis[i] <= dis[v] + x){
x ++;
continue;
}
dis[i] = dis[v] + x;
if( i != b[1]) q.push({-dis[i], i});
x ++;
}
x = 1;
for(int i = v - u; i >= 0; i -= u){
if( dis[i] <= dis[v] + x){
x ++;
continue;
}
dis[i] = dis[v] + x;
if( i != b[1]) q.push({-dis[i], i});
x ++;
}
}
}
cout << (dis[b[1]] != INT_MAX ? dis[b[1]] : -1 );
return 0;
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:23:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
23 | for(int i = 0; i < adj[v].size(); i ++){
| ~~^~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 2 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 3 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 4 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 5 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 6 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 7 |
Correct |
5 ms |
7404 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 2 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 3 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 4 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 5 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 6 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 7 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 8 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 9 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 10 |
Correct |
6 ms |
7424 KB |
Output is correct |
| 11 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 12 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 13 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 14 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 15 |
Correct |
6 ms |
7404 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 2 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 3 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 4 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 5 |
Correct |
5 ms |
7436 KB |
Output is correct |
| 6 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 7 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 8 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 9 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 10 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 11 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 12 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 13 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 14 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 15 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 16 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 17 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 18 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 19 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 20 |
Correct |
10 ms |
7532 KB |
Output is correct |
| 21 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 22 |
Correct |
5 ms |
7424 KB |
Output is correct |
| 23 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 24 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 25 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 26 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 27 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 28 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 29 |
Correct |
7 ms |
7532 KB |
Output is correct |
| 30 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 31 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 32 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 33 |
Correct |
7 ms |
7532 KB |
Output is correct |
| 34 |
Correct |
7 ms |
7660 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 2 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 3 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 4 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 5 |
Correct |
6 ms |
7424 KB |
Output is correct |
| 6 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 7 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 8 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 9 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 10 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 11 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 12 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 13 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 14 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 15 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 16 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 17 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 18 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 19 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 20 |
Correct |
10 ms |
7532 KB |
Output is correct |
| 21 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 22 |
Correct |
7 ms |
7404 KB |
Output is correct |
| 23 |
Correct |
7 ms |
7404 KB |
Output is correct |
| 24 |
Correct |
7 ms |
7532 KB |
Output is correct |
| 25 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 26 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 27 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 28 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 29 |
Correct |
7 ms |
7532 KB |
Output is correct |
| 30 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 31 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 32 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 33 |
Correct |
7 ms |
7532 KB |
Output is correct |
| 34 |
Correct |
8 ms |
7660 KB |
Output is correct |
| 35 |
Correct |
12 ms |
7916 KB |
Output is correct |
| 36 |
Correct |
7 ms |
7532 KB |
Output is correct |
| 37 |
Correct |
12 ms |
7916 KB |
Output is correct |
| 38 |
Correct |
15 ms |
7916 KB |
Output is correct |
| 39 |
Correct |
15 ms |
7916 KB |
Output is correct |
| 40 |
Correct |
15 ms |
7916 KB |
Output is correct |
| 41 |
Correct |
15 ms |
7916 KB |
Output is correct |
| 42 |
Correct |
11 ms |
7916 KB |
Output is correct |
| 43 |
Correct |
10 ms |
7916 KB |
Output is correct |
| 44 |
Correct |
68 ms |
7916 KB |
Output is correct |
| 45 |
Correct |
15 ms |
7916 KB |
Output is correct |
| 46 |
Correct |
14 ms |
7916 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 2 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 3 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 4 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 5 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 6 |
Correct |
5 ms |
7424 KB |
Output is correct |
| 7 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 8 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 9 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 10 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 11 |
Correct |
7 ms |
7404 KB |
Output is correct |
| 12 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 13 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 14 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 15 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 16 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 17 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 18 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 19 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 20 |
Correct |
10 ms |
7532 KB |
Output is correct |
| 21 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 22 |
Correct |
5 ms |
7404 KB |
Output is correct |
| 23 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 24 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 25 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 26 |
Correct |
6 ms |
7424 KB |
Output is correct |
| 27 |
Correct |
6 ms |
7404 KB |
Output is correct |
| 28 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 29 |
Correct |
7 ms |
7532 KB |
Output is correct |
| 30 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 31 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 32 |
Correct |
6 ms |
7532 KB |
Output is correct |
| 33 |
Correct |
9 ms |
7532 KB |
Output is correct |
| 34 |
Correct |
7 ms |
7660 KB |
Output is correct |
| 35 |
Correct |
12 ms |
7916 KB |
Output is correct |
| 36 |
Correct |
7 ms |
7532 KB |
Output is correct |
| 37 |
Correct |
12 ms |
7916 KB |
Output is correct |
| 38 |
Correct |
15 ms |
7916 KB |
Output is correct |
| 39 |
Correct |
15 ms |
8044 KB |
Output is correct |
| 40 |
Correct |
15 ms |
7916 KB |
Output is correct |
| 41 |
Correct |
15 ms |
7916 KB |
Output is correct |
| 42 |
Correct |
10 ms |
7916 KB |
Output is correct |
| 43 |
Correct |
10 ms |
7916 KB |
Output is correct |
| 44 |
Correct |
72 ms |
8064 KB |
Output is correct |
| 45 |
Correct |
15 ms |
7916 KB |
Output is correct |
| 46 |
Correct |
14 ms |
7916 KB |
Output is correct |
| 47 |
Correct |
30 ms |
8680 KB |
Output is correct |
| 48 |
Correct |
12 ms |
8172 KB |
Output is correct |
| 49 |
Correct |
11 ms |
8044 KB |
Output is correct |
| 50 |
Correct |
10 ms |
7916 KB |
Output is correct |
| 51 |
Correct |
39 ms |
9444 KB |
Output is correct |
| 52 |
Correct |
34 ms |
8936 KB |
Output is correct |
| 53 |
Correct |
19 ms |
8556 KB |
Output is correct |
| 54 |
Correct |
7 ms |
7788 KB |
Output is correct |
| 55 |
Correct |
7 ms |
7788 KB |
Output is correct |
| 56 |
Correct |
871 ms |
9072 KB |
Output is correct |
| 57 |
Correct |
95 ms |
9824 KB |
Output is correct |
| 58 |
Correct |
874 ms |
8216 KB |
Output is correct |
| 59 |
Correct |
13 ms |
8172 KB |
Output is correct |
| 60 |
Correct |
12 ms |
8172 KB |
Output is correct |
| 61 |
Correct |
13 ms |
8428 KB |
Output is correct |
| 62 |
Correct |
17 ms |
9068 KB |
Output is correct |
| 63 |
Correct |
31 ms |
9320 KB |
Output is correct |
| 64 |
Correct |
31 ms |
9316 KB |
Output is correct |
| 65 |
Correct |
36 ms |
9324 KB |
Output is correct |
| 66 |
Correct |
64 ms |
10336 KB |
Output is correct |
| 67 |
Correct |
64 ms |
10336 KB |
Output is correct |
