#include <iostream>
#include <bits/stdc++.h>
using namespace std;
typedef int64_t llo;
#define mp make_pair
#define pb push_back
#define a first
#define b second
int n,m;
int aa,bb;
const int ss=200;
vector<pair<pair<int,int>,int>> adj[30001][ss];//((index,power),dist)
int dist[30001][ss];
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin>>n>>m;
int st;
int endd;
memset(dist,-1,sizeof(dist));
for(int j=0;j<m;j++){
cin>>aa>>bb;
if(j==0){
st=aa;
}
if(j==1){
endd=aa;
}
if(bb>=ss){
for(int i=aa+bb;i<n;i+=bb){
adj[aa][0].pb({{i,0},(i-aa)/bb});
}
for(int i=aa-bb;i>=0;i-=bb){
adj[aa][0].pb({{i,0},(aa-i)/bb});
}
}
else{
adj[aa][0].pb({{aa,bb},0});
// adj[aa][bb].pb({{aa,0},0});
}
}
for(int i=0;i<n;i++){
for(int j=1;j<ss;j++){
if(i+j<n){
adj[i][j].pb({{i+j,j},1});
}
if(i-j>=0 and i-j<n){
adj[i][j].pb({{i-j,j},1});
}
adj[i][j].pb({{i,0},0});
}
}
priority_queue<pair<int,pair<int,int>>> ac;
ac.push({0,{st,0}});
dist[st][0]=0;
while(ac.size()){
pair<int,pair<int,int>> no=ac.top();
ac.pop();
no.a=-no.a;
if(dist[no.b.a][no.b.b]<no.a){
continue;
}
// cout<<no.b.a<<","<<no.b.b<<","<<no.a<<endl;
for(auto j:adj[no.b.a][no.b.b]){
if(dist[j.a.a][j.a.b]==-1 or dist[j.a.a][j.a.b]>dist[no.b.a][no.b.b]+j.b){
dist[j.a.a][j.a.b]=dist[no.b.a][no.b.b]+j.b;
ac.push({-dist[j.a.a][j.a.b],{j.a}});
}
}
}
cout<<dist[endd][0]<<endl;
return 0;
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:56:13: warning: 'st' may be used uninitialized in this function [-Wmaybe-uninitialized]
dist[st][0]=0;
~~~~~~~~~~~^~
skyscraper.cpp:72:20: warning: 'endd' may be used uninitialized in this function [-Wmaybe-uninitialized]
cout<<dist[endd][0]<<endl;
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
103 ms |
164728 KB |
Output is correct |
2 |
Correct |
107 ms |
164728 KB |
Output is correct |
3 |
Correct |
164 ms |
164728 KB |
Output is correct |
4 |
Correct |
112 ms |
164728 KB |
Output is correct |
5 |
Correct |
103 ms |
164728 KB |
Output is correct |
6 |
Correct |
106 ms |
164856 KB |
Output is correct |
7 |
Correct |
101 ms |
164728 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
132 ms |
164728 KB |
Output is correct |
2 |
Correct |
107 ms |
164728 KB |
Output is correct |
3 |
Correct |
112 ms |
164728 KB |
Output is correct |
4 |
Correct |
107 ms |
164836 KB |
Output is correct |
5 |
Correct |
126 ms |
164728 KB |
Output is correct |
6 |
Correct |
109 ms |
164812 KB |
Output is correct |
7 |
Correct |
107 ms |
164832 KB |
Output is correct |
8 |
Correct |
107 ms |
164920 KB |
Output is correct |
9 |
Correct |
101 ms |
165112 KB |
Output is correct |
10 |
Correct |
104 ms |
165368 KB |
Output is correct |
11 |
Correct |
104 ms |
165472 KB |
Output is correct |
12 |
Correct |
103 ms |
165496 KB |
Output is correct |
13 |
Correct |
101 ms |
165496 KB |
Output is correct |
14 |
Correct |
104 ms |
165496 KB |
Output is correct |
15 |
Correct |
102 ms |
165496 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
102 ms |
164728 KB |
Output is correct |
2 |
Correct |
101 ms |
164712 KB |
Output is correct |
3 |
Correct |
104 ms |
164728 KB |
Output is correct |
4 |
Correct |
100 ms |
164728 KB |
Output is correct |
5 |
Correct |
103 ms |
164856 KB |
Output is correct |
6 |
Correct |
102 ms |
164856 KB |
Output is correct |
7 |
Correct |
101 ms |
164856 KB |
Output is correct |
8 |
Correct |
100 ms |
164984 KB |
Output is correct |
9 |
Correct |
101 ms |
165112 KB |
Output is correct |
10 |
Correct |
100 ms |
165496 KB |
Output is correct |
11 |
Correct |
105 ms |
165496 KB |
Output is correct |
12 |
Correct |
100 ms |
165496 KB |
Output is correct |
13 |
Correct |
102 ms |
165496 KB |
Output is correct |
14 |
Correct |
105 ms |
165496 KB |
Output is correct |
15 |
Correct |
108 ms |
165600 KB |
Output is correct |
16 |
Correct |
102 ms |
166264 KB |
Output is correct |
17 |
Correct |
134 ms |
172796 KB |
Output is correct |
18 |
Correct |
153 ms |
185208 KB |
Output is correct |
19 |
Correct |
161 ms |
188536 KB |
Output is correct |
20 |
Correct |
158 ms |
188476 KB |
Output is correct |
21 |
Correct |
108 ms |
168312 KB |
Output is correct |
22 |
Correct |
150 ms |
185720 KB |
Output is correct |
23 |
Correct |
155 ms |
183544 KB |
Output is correct |
24 |
Correct |
156 ms |
187240 KB |
Output is correct |
25 |
Correct |
156 ms |
188412 KB |
Output is correct |
26 |
Correct |
159 ms |
188408 KB |
Output is correct |
27 |
Correct |
156 ms |
188536 KB |
Output is correct |
28 |
Correct |
162 ms |
188412 KB |
Output is correct |
29 |
Correct |
172 ms |
188412 KB |
Output is correct |
30 |
Correct |
165 ms |
188408 KB |
Output is correct |
31 |
Correct |
167 ms |
188412 KB |
Output is correct |
32 |
Correct |
164 ms |
188424 KB |
Output is correct |
33 |
Correct |
188 ms |
188536 KB |
Output is correct |
34 |
Correct |
195 ms |
188536 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
104 ms |
164728 KB |
Output is correct |
2 |
Correct |
103 ms |
164728 KB |
Output is correct |
3 |
Correct |
102 ms |
164728 KB |
Output is correct |
4 |
Correct |
100 ms |
164728 KB |
Output is correct |
5 |
Correct |
102 ms |
164856 KB |
Output is correct |
6 |
Correct |
101 ms |
164856 KB |
Output is correct |
7 |
Correct |
99 ms |
164856 KB |
Output is correct |
8 |
Correct |
102 ms |
164984 KB |
Output is correct |
9 |
Correct |
100 ms |
165112 KB |
Output is correct |
10 |
Correct |
105 ms |
165372 KB |
Output is correct |
11 |
Correct |
107 ms |
165496 KB |
Output is correct |
12 |
Correct |
105 ms |
165500 KB |
Output is correct |
13 |
Correct |
109 ms |
165496 KB |
Output is correct |
14 |
Correct |
100 ms |
165496 KB |
Output is correct |
15 |
Correct |
105 ms |
165496 KB |
Output is correct |
16 |
Correct |
106 ms |
166264 KB |
Output is correct |
17 |
Correct |
133 ms |
172792 KB |
Output is correct |
18 |
Correct |
157 ms |
185340 KB |
Output is correct |
19 |
Correct |
156 ms |
188408 KB |
Output is correct |
20 |
Correct |
166 ms |
188408 KB |
Output is correct |
21 |
Correct |
117 ms |
168392 KB |
Output is correct |
22 |
Correct |
165 ms |
185720 KB |
Output is correct |
23 |
Correct |
150 ms |
183416 KB |
Output is correct |
24 |
Correct |
160 ms |
187256 KB |
Output is correct |
25 |
Correct |
159 ms |
188536 KB |
Output is correct |
26 |
Correct |
160 ms |
188408 KB |
Output is correct |
27 |
Correct |
158 ms |
188408 KB |
Output is correct |
28 |
Correct |
161 ms |
188412 KB |
Output is correct |
29 |
Correct |
185 ms |
188520 KB |
Output is correct |
30 |
Correct |
161 ms |
188376 KB |
Output is correct |
31 |
Correct |
161 ms |
188408 KB |
Output is correct |
32 |
Correct |
168 ms |
188356 KB |
Output is correct |
33 |
Correct |
187 ms |
188408 KB |
Output is correct |
34 |
Correct |
192 ms |
188536 KB |
Output is correct |
35 |
Correct |
173 ms |
181980 KB |
Output is correct |
36 |
Correct |
134 ms |
177272 KB |
Output is correct |
37 |
Correct |
209 ms |
188668 KB |
Output is correct |
38 |
Correct |
213 ms |
189304 KB |
Output is correct |
39 |
Correct |
213 ms |
189436 KB |
Output is correct |
40 |
Correct |
207 ms |
189432 KB |
Output is correct |
41 |
Correct |
203 ms |
189432 KB |
Output is correct |
42 |
Correct |
165 ms |
188788 KB |
Output is correct |
43 |
Correct |
163 ms |
188788 KB |
Output is correct |
44 |
Correct |
161 ms |
188808 KB |
Output is correct |
45 |
Correct |
262 ms |
190776 KB |
Output is correct |
46 |
Correct |
249 ms |
190520 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
99 ms |
164728 KB |
Output is correct |
2 |
Correct |
99 ms |
164708 KB |
Output is correct |
3 |
Correct |
104 ms |
164824 KB |
Output is correct |
4 |
Correct |
100 ms |
164728 KB |
Output is correct |
5 |
Correct |
99 ms |
164856 KB |
Output is correct |
6 |
Correct |
101 ms |
164728 KB |
Output is correct |
7 |
Correct |
103 ms |
164888 KB |
Output is correct |
8 |
Correct |
101 ms |
164984 KB |
Output is correct |
9 |
Correct |
103 ms |
165112 KB |
Output is correct |
10 |
Correct |
101 ms |
165368 KB |
Output is correct |
11 |
Correct |
102 ms |
165496 KB |
Output is correct |
12 |
Correct |
100 ms |
165624 KB |
Output is correct |
13 |
Correct |
103 ms |
165496 KB |
Output is correct |
14 |
Correct |
102 ms |
165496 KB |
Output is correct |
15 |
Correct |
106 ms |
165496 KB |
Output is correct |
16 |
Correct |
103 ms |
166264 KB |
Output is correct |
17 |
Correct |
124 ms |
172920 KB |
Output is correct |
18 |
Correct |
162 ms |
185340 KB |
Output is correct |
19 |
Correct |
156 ms |
188408 KB |
Output is correct |
20 |
Correct |
161 ms |
188536 KB |
Output is correct |
21 |
Correct |
110 ms |
168308 KB |
Output is correct |
22 |
Correct |
150 ms |
185720 KB |
Output is correct |
23 |
Correct |
149 ms |
183440 KB |
Output is correct |
24 |
Correct |
159 ms |
187256 KB |
Output is correct |
25 |
Correct |
160 ms |
188408 KB |
Output is correct |
26 |
Correct |
159 ms |
188364 KB |
Output is correct |
27 |
Correct |
159 ms |
188408 KB |
Output is correct |
28 |
Correct |
170 ms |
188408 KB |
Output is correct |
29 |
Correct |
175 ms |
188408 KB |
Output is correct |
30 |
Correct |
164 ms |
188408 KB |
Output is correct |
31 |
Correct |
163 ms |
188536 KB |
Output is correct |
32 |
Correct |
162 ms |
188408 KB |
Output is correct |
33 |
Correct |
184 ms |
188468 KB |
Output is correct |
34 |
Correct |
180 ms |
188408 KB |
Output is correct |
35 |
Correct |
168 ms |
182088 KB |
Output is correct |
36 |
Correct |
136 ms |
177144 KB |
Output is correct |
37 |
Correct |
211 ms |
188664 KB |
Output is correct |
38 |
Correct |
209 ms |
189388 KB |
Output is correct |
39 |
Correct |
209 ms |
189432 KB |
Output is correct |
40 |
Correct |
206 ms |
189432 KB |
Output is correct |
41 |
Correct |
206 ms |
189432 KB |
Output is correct |
42 |
Correct |
164 ms |
188788 KB |
Output is correct |
43 |
Correct |
164 ms |
188788 KB |
Output is correct |
44 |
Correct |
163 ms |
188808 KB |
Output is correct |
45 |
Correct |
254 ms |
190776 KB |
Output is correct |
46 |
Correct |
258 ms |
190392 KB |
Output is correct |
47 |
Runtime error |
311 ms |
262148 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
48 |
Halted |
0 ms |
0 KB |
- |