#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=130;
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 |
66 ms |
107256 KB |
Output is correct |
2 |
Correct |
65 ms |
107128 KB |
Output is correct |
3 |
Correct |
68 ms |
107164 KB |
Output is correct |
4 |
Correct |
67 ms |
107256 KB |
Output is correct |
5 |
Correct |
65 ms |
107256 KB |
Output is correct |
6 |
Correct |
66 ms |
107260 KB |
Output is correct |
7 |
Correct |
65 ms |
107256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
68 ms |
107128 KB |
Output is correct |
2 |
Correct |
68 ms |
107128 KB |
Output is correct |
3 |
Correct |
69 ms |
107128 KB |
Output is correct |
4 |
Correct |
69 ms |
107256 KB |
Output is correct |
5 |
Correct |
67 ms |
107256 KB |
Output is correct |
6 |
Correct |
67 ms |
107256 KB |
Output is correct |
7 |
Correct |
67 ms |
107256 KB |
Output is correct |
8 |
Correct |
68 ms |
107384 KB |
Output is correct |
9 |
Correct |
68 ms |
107384 KB |
Output is correct |
10 |
Correct |
69 ms |
107644 KB |
Output is correct |
11 |
Correct |
70 ms |
107768 KB |
Output is correct |
12 |
Correct |
68 ms |
107768 KB |
Output is correct |
13 |
Correct |
68 ms |
107768 KB |
Output is correct |
14 |
Correct |
67 ms |
107768 KB |
Output is correct |
15 |
Correct |
69 ms |
107768 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
69 ms |
107256 KB |
Output is correct |
2 |
Correct |
67 ms |
107256 KB |
Output is correct |
3 |
Correct |
69 ms |
107256 KB |
Output is correct |
4 |
Correct |
68 ms |
107260 KB |
Output is correct |
5 |
Correct |
71 ms |
107256 KB |
Output is correct |
6 |
Correct |
69 ms |
107256 KB |
Output is correct |
7 |
Correct |
67 ms |
107256 KB |
Output is correct |
8 |
Correct |
66 ms |
107384 KB |
Output is correct |
9 |
Correct |
68 ms |
107384 KB |
Output is correct |
10 |
Correct |
70 ms |
107644 KB |
Output is correct |
11 |
Correct |
68 ms |
107768 KB |
Output is correct |
12 |
Correct |
72 ms |
107640 KB |
Output is correct |
13 |
Correct |
68 ms |
107640 KB |
Output is correct |
14 |
Correct |
69 ms |
107772 KB |
Output is correct |
15 |
Correct |
70 ms |
107768 KB |
Output is correct |
16 |
Correct |
68 ms |
108280 KB |
Output is correct |
17 |
Correct |
86 ms |
112760 KB |
Output is correct |
18 |
Correct |
100 ms |
120884 KB |
Output is correct |
19 |
Correct |
111 ms |
122872 KB |
Output is correct |
20 |
Correct |
107 ms |
122872 KB |
Output is correct |
21 |
Correct |
74 ms |
109816 KB |
Output is correct |
22 |
Correct |
104 ms |
121080 KB |
Output is correct |
23 |
Correct |
102 ms |
119544 KB |
Output is correct |
24 |
Correct |
106 ms |
122232 KB |
Output is correct |
25 |
Correct |
106 ms |
122864 KB |
Output is correct |
26 |
Correct |
115 ms |
122872 KB |
Output is correct |
27 |
Correct |
105 ms |
122872 KB |
Output is correct |
28 |
Correct |
107 ms |
122872 KB |
Output is correct |
29 |
Correct |
117 ms |
122872 KB |
Output is correct |
30 |
Correct |
111 ms |
122872 KB |
Output is correct |
31 |
Correct |
113 ms |
122872 KB |
Output is correct |
32 |
Correct |
109 ms |
122872 KB |
Output is correct |
33 |
Correct |
136 ms |
122872 KB |
Output is correct |
34 |
Correct |
134 ms |
123000 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
71 ms |
107128 KB |
Output is correct |
2 |
Correct |
68 ms |
107128 KB |
Output is correct |
3 |
Correct |
69 ms |
107128 KB |
Output is correct |
4 |
Correct |
68 ms |
107256 KB |
Output is correct |
5 |
Correct |
68 ms |
107256 KB |
Output is correct |
6 |
Correct |
71 ms |
107256 KB |
Output is correct |
7 |
Correct |
67 ms |
107384 KB |
Output is correct |
8 |
Correct |
70 ms |
107384 KB |
Output is correct |
9 |
Correct |
66 ms |
107384 KB |
Output is correct |
10 |
Correct |
67 ms |
107640 KB |
Output is correct |
11 |
Correct |
68 ms |
107896 KB |
Output is correct |
12 |
Correct |
67 ms |
107896 KB |
Output is correct |
13 |
Correct |
69 ms |
107640 KB |
Output is correct |
14 |
Correct |
67 ms |
107768 KB |
Output is correct |
15 |
Correct |
71 ms |
107768 KB |
Output is correct |
16 |
Correct |
74 ms |
108280 KB |
Output is correct |
17 |
Correct |
87 ms |
112760 KB |
Output is correct |
18 |
Correct |
99 ms |
120824 KB |
Output is correct |
19 |
Correct |
104 ms |
122872 KB |
Output is correct |
20 |
Correct |
104 ms |
122872 KB |
Output is correct |
21 |
Correct |
72 ms |
109816 KB |
Output is correct |
22 |
Correct |
105 ms |
121080 KB |
Output is correct |
23 |
Correct |
101 ms |
119672 KB |
Output is correct |
24 |
Correct |
109 ms |
122104 KB |
Output is correct |
25 |
Correct |
104 ms |
122872 KB |
Output is correct |
26 |
Correct |
106 ms |
122848 KB |
Output is correct |
27 |
Correct |
111 ms |
122872 KB |
Output is correct |
28 |
Correct |
108 ms |
122872 KB |
Output is correct |
29 |
Correct |
118 ms |
122872 KB |
Output is correct |
30 |
Correct |
112 ms |
122864 KB |
Output is correct |
31 |
Correct |
110 ms |
122872 KB |
Output is correct |
32 |
Correct |
108 ms |
122872 KB |
Output is correct |
33 |
Correct |
132 ms |
123000 KB |
Output is correct |
34 |
Correct |
140 ms |
123000 KB |
Output is correct |
35 |
Correct |
118 ms |
118904 KB |
Output is correct |
36 |
Correct |
92 ms |
115508 KB |
Output is correct |
37 |
Correct |
146 ms |
123640 KB |
Output is correct |
38 |
Correct |
146 ms |
124024 KB |
Output is correct |
39 |
Correct |
144 ms |
124024 KB |
Output is correct |
40 |
Correct |
143 ms |
124024 KB |
Output is correct |
41 |
Correct |
142 ms |
124024 KB |
Output is correct |
42 |
Correct |
111 ms |
123128 KB |
Output is correct |
43 |
Correct |
111 ms |
123124 KB |
Output is correct |
44 |
Correct |
116 ms |
123272 KB |
Output is correct |
45 |
Correct |
172 ms |
126712 KB |
Output is correct |
46 |
Correct |
175 ms |
127168 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
72 ms |
107256 KB |
Output is correct |
2 |
Correct |
66 ms |
107256 KB |
Output is correct |
3 |
Correct |
65 ms |
107256 KB |
Output is correct |
4 |
Correct |
67 ms |
107256 KB |
Output is correct |
5 |
Correct |
74 ms |
107256 KB |
Output is correct |
6 |
Correct |
70 ms |
107260 KB |
Output is correct |
7 |
Correct |
67 ms |
107256 KB |
Output is correct |
8 |
Correct |
68 ms |
107512 KB |
Output is correct |
9 |
Correct |
68 ms |
107384 KB |
Output is correct |
10 |
Correct |
68 ms |
107640 KB |
Output is correct |
11 |
Correct |
70 ms |
107768 KB |
Output is correct |
12 |
Correct |
68 ms |
107640 KB |
Output is correct |
13 |
Correct |
69 ms |
107640 KB |
Output is correct |
14 |
Correct |
74 ms |
107768 KB |
Output is correct |
15 |
Correct |
69 ms |
107768 KB |
Output is correct |
16 |
Correct |
69 ms |
108280 KB |
Output is correct |
17 |
Correct |
87 ms |
112760 KB |
Output is correct |
18 |
Correct |
99 ms |
120824 KB |
Output is correct |
19 |
Correct |
113 ms |
122872 KB |
Output is correct |
20 |
Correct |
112 ms |
122872 KB |
Output is correct |
21 |
Correct |
74 ms |
110072 KB |
Output is correct |
22 |
Correct |
101 ms |
121080 KB |
Output is correct |
23 |
Correct |
103 ms |
119544 KB |
Output is correct |
24 |
Correct |
106 ms |
122104 KB |
Output is correct |
25 |
Correct |
105 ms |
122900 KB |
Output is correct |
26 |
Correct |
108 ms |
122872 KB |
Output is correct |
27 |
Correct |
111 ms |
122876 KB |
Output is correct |
28 |
Correct |
115 ms |
122868 KB |
Output is correct |
29 |
Correct |
120 ms |
122872 KB |
Output is correct |
30 |
Correct |
109 ms |
122872 KB |
Output is correct |
31 |
Correct |
111 ms |
122872 KB |
Output is correct |
32 |
Correct |
111 ms |
122872 KB |
Output is correct |
33 |
Correct |
140 ms |
123000 KB |
Output is correct |
34 |
Correct |
134 ms |
122872 KB |
Output is correct |
35 |
Correct |
132 ms |
118904 KB |
Output is correct |
36 |
Correct |
93 ms |
115576 KB |
Output is correct |
37 |
Correct |
148 ms |
123704 KB |
Output is correct |
38 |
Correct |
149 ms |
124024 KB |
Output is correct |
39 |
Correct |
146 ms |
123896 KB |
Output is correct |
40 |
Correct |
144 ms |
124024 KB |
Output is correct |
41 |
Correct |
151 ms |
124004 KB |
Output is correct |
42 |
Correct |
120 ms |
123252 KB |
Output is correct |
43 |
Correct |
116 ms |
123124 KB |
Output is correct |
44 |
Correct |
116 ms |
123228 KB |
Output is correct |
45 |
Correct |
174 ms |
126776 KB |
Output is correct |
46 |
Correct |
176 ms |
126840 KB |
Output is correct |
47 |
Correct |
537 ms |
212956 KB |
Output is correct |
48 |
Runtime error |
410 ms |
262148 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
49 |
Halted |
0 ms |
0 KB |
- |