//Sorry but iam targeting IOI :))
//NEVER LOSE HOPE
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>
#define endl "\n"
#define ceil(a,b) (a+(b-1))/b
#define all(v) v.begin(),v.end()
#define Hidden ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
using namespace std;
const int mod = 1e9+7;
int32_t main()
{
Hidden;
pair<int,int>arr[30005];
vector<pair<int,int>>edges[30005];
vector<int>freq[30005];
int n, m;
cin >> n >> m;
for(int i = 0 ; i < m ; i ++)
{
int b , p;
cin>>b>>p;
arr[i]={b,p};
freq[b].push_back(i);
}
for(int i = 0 ; i < m ; i++)
{
for(int j = arr[i].first+arr[i].second ; j<=n ; j+=arr[i].second)
{
for(int p = 0 ; p < freq[j].size() ; p ++)
{
edges[arr[i].first].push_back({arr[freq[j][p]].first ,(j-arr[i].first)/arr[i].second});
}
}
for(int j = arr[i].first-arr[i].second ; j>=0 ; j-=arr[i].second)
{
for(int p = 0 ; p < freq[j].size() ; p ++)
{
edges[arr[i].first].push_back({arr[freq[j][p]].first ,(arr[i].first-j)/arr[i].second});
}
}
}
priority_queue<pair<int,int>>pq;
pq.push({0,arr[0].first});
int dist[30005];
for(int i = 0 ; i < 30005 ; i++) dist[i]=INT_MAX;
dist[arr[0].first]=0;
while(!pq.empty())
{
pair<int,int>p=pq.top();
pq.pop();
for(int i = 0; i < edges[p.second].size() ; i++)
{
int cost=dist[p.second]+edges[p.second][i].second;
if(dist[edges[p.second][i].first] > cost||dist[edges[p.second][i].first]==INT_MAX)
{
dist[edges[p.second][i].first] = cost;
pq.push({-cost , edges[p.second][i].first});
}
}
}
if(dist[arr[1].first] == INT_MAX) cout<<"-1";
else cout<<dist[arr[1].first];
}
Compilation message
skyscraper.cpp: In function 'int32_t main()':
skyscraper.cpp:31:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
31 | for(int p = 0 ; p < freq[j].size() ; p ++)
| ~~^~~~~~~~~~~~~~~~
skyscraper.cpp:38:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
38 | for(int p = 0 ; p < freq[j].size() ; p ++)
| ~~^~~~~~~~~~~~~~~~
skyscraper.cpp:55:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
55 | for(int i = 0; i < edges[p.second].size() ; i++)
| ~~^~~~~~~~~~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1996 KB |
Output is correct |
2 |
Correct |
1 ms |
1996 KB |
Output is correct |
3 |
Correct |
1 ms |
1996 KB |
Output is correct |
4 |
Correct |
1 ms |
1996 KB |
Output is correct |
5 |
Correct |
2 ms |
1948 KB |
Output is correct |
6 |
Correct |
2 ms |
1996 KB |
Output is correct |
7 |
Correct |
1 ms |
1996 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1996 KB |
Output is correct |
2 |
Correct |
2 ms |
1996 KB |
Output is correct |
3 |
Correct |
1 ms |
1996 KB |
Output is correct |
4 |
Correct |
1 ms |
1996 KB |
Output is correct |
5 |
Correct |
1 ms |
1996 KB |
Output is correct |
6 |
Correct |
1 ms |
2052 KB |
Output is correct |
7 |
Correct |
1 ms |
1996 KB |
Output is correct |
8 |
Correct |
1 ms |
1996 KB |
Output is correct |
9 |
Correct |
1 ms |
1996 KB |
Output is correct |
10 |
Correct |
2 ms |
2124 KB |
Output is correct |
11 |
Correct |
5 ms |
3788 KB |
Output is correct |
12 |
Correct |
3 ms |
2396 KB |
Output is correct |
13 |
Correct |
9 ms |
5324 KB |
Output is correct |
14 |
Correct |
3 ms |
2508 KB |
Output is correct |
15 |
Correct |
3 ms |
2508 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1996 KB |
Output is correct |
2 |
Correct |
2 ms |
1996 KB |
Output is correct |
3 |
Correct |
1 ms |
1996 KB |
Output is correct |
4 |
Correct |
1 ms |
1996 KB |
Output is correct |
5 |
Correct |
1 ms |
1996 KB |
Output is correct |
6 |
Correct |
2 ms |
1996 KB |
Output is correct |
7 |
Correct |
1 ms |
1996 KB |
Output is correct |
8 |
Correct |
1 ms |
1996 KB |
Output is correct |
9 |
Correct |
2 ms |
1996 KB |
Output is correct |
10 |
Correct |
2 ms |
2124 KB |
Output is correct |
11 |
Correct |
5 ms |
3852 KB |
Output is correct |
12 |
Correct |
3 ms |
2396 KB |
Output is correct |
13 |
Correct |
9 ms |
5312 KB |
Output is correct |
14 |
Correct |
3 ms |
2508 KB |
Output is correct |
15 |
Correct |
3 ms |
2476 KB |
Output is correct |
16 |
Correct |
2 ms |
2380 KB |
Output is correct |
17 |
Correct |
3 ms |
2636 KB |
Output is correct |
18 |
Correct |
2 ms |
2124 KB |
Output is correct |
19 |
Correct |
2 ms |
1996 KB |
Output is correct |
20 |
Correct |
69 ms |
34136 KB |
Output is correct |
21 |
Correct |
2 ms |
2124 KB |
Output is correct |
22 |
Correct |
2 ms |
1996 KB |
Output is correct |
23 |
Correct |
2 ms |
2124 KB |
Output is correct |
24 |
Correct |
4 ms |
2252 KB |
Output is correct |
25 |
Correct |
3 ms |
2124 KB |
Output is correct |
26 |
Correct |
20 ms |
6332 KB |
Output is correct |
27 |
Correct |
15 ms |
4240 KB |
Output is correct |
28 |
Correct |
3 ms |
2252 KB |
Output is correct |
29 |
Correct |
2 ms |
2124 KB |
Output is correct |
30 |
Correct |
1 ms |
1996 KB |
Output is correct |
31 |
Correct |
2 ms |
1996 KB |
Output is correct |
32 |
Correct |
2 ms |
2084 KB |
Output is correct |
33 |
Correct |
3 ms |
2508 KB |
Output is correct |
34 |
Correct |
3 ms |
2508 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1996 KB |
Output is correct |
2 |
Correct |
1 ms |
1996 KB |
Output is correct |
3 |
Correct |
1 ms |
1996 KB |
Output is correct |
4 |
Correct |
1 ms |
1996 KB |
Output is correct |
5 |
Correct |
1 ms |
1996 KB |
Output is correct |
6 |
Correct |
1 ms |
1996 KB |
Output is correct |
7 |
Correct |
1 ms |
1996 KB |
Output is correct |
8 |
Correct |
2 ms |
1996 KB |
Output is correct |
9 |
Correct |
1 ms |
1996 KB |
Output is correct |
10 |
Correct |
2 ms |
2124 KB |
Output is correct |
11 |
Correct |
5 ms |
3788 KB |
Output is correct |
12 |
Correct |
3 ms |
2396 KB |
Output is correct |
13 |
Correct |
10 ms |
5312 KB |
Output is correct |
14 |
Correct |
3 ms |
2508 KB |
Output is correct |
15 |
Correct |
3 ms |
2508 KB |
Output is correct |
16 |
Correct |
2 ms |
2252 KB |
Output is correct |
17 |
Correct |
3 ms |
2636 KB |
Output is correct |
18 |
Correct |
2 ms |
2124 KB |
Output is correct |
19 |
Correct |
2 ms |
1996 KB |
Output is correct |
20 |
Correct |
70 ms |
34176 KB |
Output is correct |
21 |
Correct |
2 ms |
2124 KB |
Output is correct |
22 |
Correct |
2 ms |
1996 KB |
Output is correct |
23 |
Correct |
2 ms |
2124 KB |
Output is correct |
24 |
Correct |
4 ms |
2252 KB |
Output is correct |
25 |
Correct |
2 ms |
2124 KB |
Output is correct |
26 |
Correct |
18 ms |
6324 KB |
Output is correct |
27 |
Correct |
18 ms |
4208 KB |
Output is correct |
28 |
Correct |
2 ms |
2252 KB |
Output is correct |
29 |
Correct |
2 ms |
2124 KB |
Output is correct |
30 |
Correct |
1 ms |
1996 KB |
Output is correct |
31 |
Correct |
2 ms |
1996 KB |
Output is correct |
32 |
Correct |
2 ms |
1996 KB |
Output is correct |
33 |
Correct |
3 ms |
2508 KB |
Output is correct |
34 |
Correct |
3 ms |
2508 KB |
Output is correct |
35 |
Correct |
58 ms |
25940 KB |
Output is correct |
36 |
Correct |
5 ms |
2892 KB |
Output is correct |
37 |
Correct |
68 ms |
31028 KB |
Output is correct |
38 |
Correct |
78 ms |
35132 KB |
Output is correct |
39 |
Correct |
81 ms |
37732 KB |
Output is correct |
40 |
Correct |
80 ms |
35792 KB |
Output is correct |
41 |
Correct |
79 ms |
34136 KB |
Output is correct |
42 |
Correct |
273 ms |
68520 KB |
Output is correct |
43 |
Correct |
228 ms |
35408 KB |
Output is correct |
44 |
Runtime error |
518 ms |
262148 KB |
Execution killed with signal 9 |
45 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1996 KB |
Output is correct |
2 |
Correct |
1 ms |
1996 KB |
Output is correct |
3 |
Correct |
3 ms |
1996 KB |
Output is correct |
4 |
Correct |
1 ms |
1996 KB |
Output is correct |
5 |
Correct |
1 ms |
1996 KB |
Output is correct |
6 |
Correct |
1 ms |
1996 KB |
Output is correct |
7 |
Correct |
1 ms |
1996 KB |
Output is correct |
8 |
Correct |
1 ms |
1996 KB |
Output is correct |
9 |
Correct |
1 ms |
1996 KB |
Output is correct |
10 |
Correct |
2 ms |
2124 KB |
Output is correct |
11 |
Correct |
5 ms |
3788 KB |
Output is correct |
12 |
Correct |
3 ms |
2396 KB |
Output is correct |
13 |
Correct |
9 ms |
5312 KB |
Output is correct |
14 |
Correct |
3 ms |
2508 KB |
Output is correct |
15 |
Correct |
3 ms |
2460 KB |
Output is correct |
16 |
Correct |
2 ms |
2252 KB |
Output is correct |
17 |
Correct |
3 ms |
2636 KB |
Output is correct |
18 |
Correct |
2 ms |
2124 KB |
Output is correct |
19 |
Correct |
2 ms |
1996 KB |
Output is correct |
20 |
Correct |
69 ms |
34184 KB |
Output is correct |
21 |
Correct |
2 ms |
2124 KB |
Output is correct |
22 |
Correct |
2 ms |
1996 KB |
Output is correct |
23 |
Correct |
2 ms |
2124 KB |
Output is correct |
24 |
Correct |
4 ms |
2252 KB |
Output is correct |
25 |
Correct |
3 ms |
2124 KB |
Output is correct |
26 |
Correct |
18 ms |
6332 KB |
Output is correct |
27 |
Correct |
15 ms |
4308 KB |
Output is correct |
28 |
Correct |
3 ms |
2252 KB |
Output is correct |
29 |
Correct |
2 ms |
2124 KB |
Output is correct |
30 |
Correct |
2 ms |
1996 KB |
Output is correct |
31 |
Correct |
2 ms |
1996 KB |
Output is correct |
32 |
Correct |
2 ms |
1996 KB |
Output is correct |
33 |
Correct |
3 ms |
2508 KB |
Output is correct |
34 |
Correct |
3 ms |
2508 KB |
Output is correct |
35 |
Correct |
65 ms |
25956 KB |
Output is correct |
36 |
Correct |
5 ms |
2892 KB |
Output is correct |
37 |
Correct |
69 ms |
30984 KB |
Output is correct |
38 |
Correct |
87 ms |
35096 KB |
Output is correct |
39 |
Correct |
84 ms |
37684 KB |
Output is correct |
40 |
Correct |
82 ms |
35728 KB |
Output is correct |
41 |
Correct |
76 ms |
34028 KB |
Output is correct |
42 |
Correct |
278 ms |
68572 KB |
Output is correct |
43 |
Correct |
235 ms |
35404 KB |
Output is correct |
44 |
Runtime error |
546 ms |
262148 KB |
Execution killed with signal 9 |
45 |
Halted |
0 ms |
0 KB |
- |