#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<(x.F)<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first
#define int ll
const int N=50000,S=100;
int m,n,pos[N],p[N],dist[N][S];
vector<int> vec[N];
set<pair<int,pair<int,int>>> st;
main(){
ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
cin>>n>>m;
f(i,0,m){
cin>>pos[i]>>p[i];
vec[pos[i]].pb(p[i]);
}
f(i,0,n) f(j,0,S) dist[i][j]=N;
dist[pos[0]][0]=0;
f(i,0,n) f(j,0,S) st.insert({dist[i][j],{i,j}});
while(st.size()){
int x=(*st.begin()).S.F,p=(*st.begin()).S.S;
if(dist[x][p]==N) break;
//cout<<endl;
//eror(dist[2][0]);
//cout<<x<<" "<<p<<" -> "<<dist[x][p]<<endl;
st.erase(*st.begin());
if(p>0){
//eror(x+p);
//cout<<x+p<<" "<<dist[x][p]+1<<" "<<dist[x+p][0]<<endl;
if(x+p<n && dist[x][p]+1<dist[x+p][0]){
//eror(100);
st.erase({dist[x+p][0],{x+p,0}});
dist[x+p][0]=dist[x][p]+1;
st.insert({dist[x+p][0],{x+p,0}});
}
if(p<=x && dist[x][p]+1<dist[x-p][0]){
st.erase({dist[x-p][0],{x-p,0}});
dist[x-p][0]=dist[x][p]+1;
st.insert({dist[x-p][0],{x-p,0}});
}
if(x+p<n && dist[x][p]+1<dist[x+p][p]){
st.erase({dist[x+p][p],{x+p,p}});
dist[x+p][p]=dist[x][p]+1;
st.insert({dist[x+p][p],{x+p,p}});
}
if(p<=x && dist[x][p]+1<dist[x-p][p]){
st.erase({dist[x-p][p],{x-p,p}});
dist[x-p][p]=dist[x][p]+1;
st.insert({dist[x-p][p],{x-p,p}});
}
continue ;
}
for(auto u : vec[x]){
if(u<S){
if(dist[x][u]<=dist[x][p]) continue ;
st.erase({dist[x][u],{x,u}});
dist[x][u]=dist[x][p];
st.insert({dist[x][u],{x,u}});
}
else{
for(int i=x%u;i<n;i+=u){
if(dist[x][p]+abs(x-i)/u<dist[i][p]){
st.erase({dist[i][p],{i,p}});
dist[i][p]=dist[x][p]+abs(x-i)/u;
st.insert({dist[i][p],{i,p}});
}
}
}
}
}
cout<<(dist[pos[1]][0]==N ? -1 : dist[pos[1]][0]);
}
Compilation message
skyscraper.cpp:30:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
30 | main(){
| ^~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1484 KB |
Output is correct |
2 |
Correct |
1 ms |
1484 KB |
Output is correct |
3 |
Correct |
1 ms |
1484 KB |
Output is correct |
4 |
Correct |
1 ms |
1484 KB |
Output is correct |
5 |
Correct |
1 ms |
1484 KB |
Output is correct |
6 |
Correct |
1 ms |
1484 KB |
Output is correct |
7 |
Correct |
1 ms |
1484 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1484 KB |
Output is correct |
2 |
Correct |
1 ms |
1484 KB |
Output is correct |
3 |
Correct |
1 ms |
1484 KB |
Output is correct |
4 |
Correct |
1 ms |
1484 KB |
Output is correct |
5 |
Correct |
1 ms |
1484 KB |
Output is correct |
6 |
Correct |
2 ms |
1484 KB |
Output is correct |
7 |
Correct |
1 ms |
1484 KB |
Output is correct |
8 |
Correct |
1 ms |
1740 KB |
Output is correct |
9 |
Correct |
2 ms |
1868 KB |
Output is correct |
10 |
Correct |
3 ms |
2124 KB |
Output is correct |
11 |
Correct |
5 ms |
2252 KB |
Output is correct |
12 |
Correct |
3 ms |
2252 KB |
Output is correct |
13 |
Correct |
3 ms |
2252 KB |
Output is correct |
14 |
Correct |
6 ms |
2252 KB |
Output is correct |
15 |
Correct |
5 ms |
2252 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1484 KB |
Output is correct |
2 |
Correct |
2 ms |
1484 KB |
Output is correct |
3 |
Correct |
1 ms |
1484 KB |
Output is correct |
4 |
Correct |
1 ms |
1484 KB |
Output is correct |
5 |
Correct |
1 ms |
1484 KB |
Output is correct |
6 |
Correct |
1 ms |
1484 KB |
Output is correct |
7 |
Correct |
1 ms |
1484 KB |
Output is correct |
8 |
Correct |
2 ms |
1740 KB |
Output is correct |
9 |
Correct |
2 ms |
1868 KB |
Output is correct |
10 |
Correct |
4 ms |
2124 KB |
Output is correct |
11 |
Correct |
5 ms |
2252 KB |
Output is correct |
12 |
Correct |
3 ms |
2252 KB |
Output is correct |
13 |
Correct |
3 ms |
2252 KB |
Output is correct |
14 |
Correct |
5 ms |
2252 KB |
Output is correct |
15 |
Correct |
5 ms |
2252 KB |
Output is correct |
16 |
Correct |
5 ms |
2892 KB |
Output is correct |
17 |
Correct |
25 ms |
6740 KB |
Output is correct |
18 |
Correct |
44 ms |
13800 KB |
Output is correct |
19 |
Correct |
57 ms |
15572 KB |
Output is correct |
20 |
Correct |
51 ms |
15624 KB |
Output is correct |
21 |
Correct |
9 ms |
4300 KB |
Output is correct |
22 |
Correct |
42 ms |
14052 KB |
Output is correct |
23 |
Correct |
46 ms |
12732 KB |
Output is correct |
24 |
Correct |
56 ms |
14908 KB |
Output is correct |
25 |
Correct |
66 ms |
15556 KB |
Output is correct |
26 |
Correct |
57 ms |
15528 KB |
Output is correct |
27 |
Correct |
57 ms |
15716 KB |
Output is correct |
28 |
Correct |
61 ms |
15648 KB |
Output is correct |
29 |
Correct |
87 ms |
15600 KB |
Output is correct |
30 |
Correct |
76 ms |
15580 KB |
Output is correct |
31 |
Correct |
70 ms |
15580 KB |
Output is correct |
32 |
Correct |
66 ms |
15564 KB |
Output is correct |
33 |
Correct |
121 ms |
15640 KB |
Output is correct |
34 |
Correct |
118 ms |
15640 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1484 KB |
Output is correct |
2 |
Correct |
1 ms |
1492 KB |
Output is correct |
3 |
Correct |
1 ms |
1488 KB |
Output is correct |
4 |
Correct |
1 ms |
1484 KB |
Output is correct |
5 |
Correct |
1 ms |
1488 KB |
Output is correct |
6 |
Correct |
1 ms |
1484 KB |
Output is correct |
7 |
Correct |
1 ms |
1488 KB |
Output is correct |
8 |
Correct |
2 ms |
1868 KB |
Output is correct |
9 |
Correct |
2 ms |
1872 KB |
Output is correct |
10 |
Correct |
4 ms |
2128 KB |
Output is correct |
11 |
Correct |
5 ms |
2252 KB |
Output is correct |
12 |
Correct |
3 ms |
2144 KB |
Output is correct |
13 |
Correct |
3 ms |
2252 KB |
Output is correct |
14 |
Correct |
6 ms |
2252 KB |
Output is correct |
15 |
Correct |
5 ms |
2252 KB |
Output is correct |
16 |
Correct |
6 ms |
2892 KB |
Output is correct |
17 |
Correct |
24 ms |
6788 KB |
Output is correct |
18 |
Correct |
44 ms |
13824 KB |
Output is correct |
19 |
Correct |
51 ms |
15556 KB |
Output is correct |
20 |
Correct |
48 ms |
15556 KB |
Output is correct |
21 |
Correct |
9 ms |
4300 KB |
Output is correct |
22 |
Correct |
44 ms |
14060 KB |
Output is correct |
23 |
Correct |
47 ms |
12692 KB |
Output is correct |
24 |
Correct |
61 ms |
14944 KB |
Output is correct |
25 |
Correct |
54 ms |
15640 KB |
Output is correct |
26 |
Correct |
56 ms |
15560 KB |
Output is correct |
27 |
Correct |
53 ms |
15548 KB |
Output is correct |
28 |
Correct |
60 ms |
15556 KB |
Output is correct |
29 |
Correct |
108 ms |
15556 KB |
Output is correct |
30 |
Correct |
63 ms |
15476 KB |
Output is correct |
31 |
Correct |
68 ms |
15596 KB |
Output is correct |
32 |
Correct |
68 ms |
15556 KB |
Output is correct |
33 |
Correct |
122 ms |
15632 KB |
Output is correct |
34 |
Correct |
133 ms |
15664 KB |
Output is correct |
35 |
Correct |
78 ms |
12328 KB |
Output is correct |
36 |
Correct |
34 ms |
9308 KB |
Output is correct |
37 |
Correct |
125 ms |
15680 KB |
Output is correct |
38 |
Correct |
115 ms |
16304 KB |
Output is correct |
39 |
Correct |
160 ms |
16420 KB |
Output is correct |
40 |
Correct |
125 ms |
16400 KB |
Output is correct |
41 |
Correct |
124 ms |
16324 KB |
Output is correct |
42 |
Correct |
61 ms |
16196 KB |
Output is correct |
43 |
Correct |
57 ms |
16168 KB |
Output is correct |
44 |
Correct |
59 ms |
16324 KB |
Output is correct |
45 |
Correct |
144 ms |
16284 KB |
Output is correct |
46 |
Correct |
140 ms |
16324 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1484 KB |
Output is correct |
2 |
Correct |
1 ms |
1484 KB |
Output is correct |
3 |
Correct |
1 ms |
1484 KB |
Output is correct |
4 |
Correct |
1 ms |
1484 KB |
Output is correct |
5 |
Correct |
1 ms |
1484 KB |
Output is correct |
6 |
Correct |
1 ms |
1484 KB |
Output is correct |
7 |
Correct |
1 ms |
1484 KB |
Output is correct |
8 |
Correct |
3 ms |
1740 KB |
Output is correct |
9 |
Correct |
2 ms |
1868 KB |
Output is correct |
10 |
Correct |
5 ms |
2124 KB |
Output is correct |
11 |
Correct |
5 ms |
2252 KB |
Output is correct |
12 |
Correct |
3 ms |
2192 KB |
Output is correct |
13 |
Correct |
3 ms |
2252 KB |
Output is correct |
14 |
Correct |
5 ms |
2252 KB |
Output is correct |
15 |
Correct |
5 ms |
2252 KB |
Output is correct |
16 |
Correct |
4 ms |
2892 KB |
Output is correct |
17 |
Correct |
24 ms |
6724 KB |
Output is correct |
18 |
Correct |
43 ms |
13764 KB |
Output is correct |
19 |
Correct |
51 ms |
15484 KB |
Output is correct |
20 |
Correct |
50 ms |
15564 KB |
Output is correct |
21 |
Correct |
11 ms |
4196 KB |
Output is correct |
22 |
Correct |
42 ms |
14020 KB |
Output is correct |
23 |
Correct |
46 ms |
12736 KB |
Output is correct |
24 |
Correct |
55 ms |
14932 KB |
Output is correct |
25 |
Correct |
53 ms |
15628 KB |
Output is correct |
26 |
Correct |
57 ms |
15604 KB |
Output is correct |
27 |
Correct |
69 ms |
15624 KB |
Output is correct |
28 |
Correct |
68 ms |
15668 KB |
Output is correct |
29 |
Correct |
90 ms |
15572 KB |
Output is correct |
30 |
Correct |
62 ms |
15480 KB |
Output is correct |
31 |
Correct |
77 ms |
15552 KB |
Output is correct |
32 |
Correct |
68 ms |
15480 KB |
Output is correct |
33 |
Correct |
113 ms |
15640 KB |
Output is correct |
34 |
Correct |
114 ms |
15716 KB |
Output is correct |
35 |
Correct |
73 ms |
12316 KB |
Output is correct |
36 |
Correct |
34 ms |
9292 KB |
Output is correct |
37 |
Correct |
126 ms |
15692 KB |
Output is correct |
38 |
Correct |
119 ms |
16388 KB |
Output is correct |
39 |
Correct |
131 ms |
16420 KB |
Output is correct |
40 |
Correct |
123 ms |
16424 KB |
Output is correct |
41 |
Correct |
120 ms |
16416 KB |
Output is correct |
42 |
Correct |
61 ms |
16176 KB |
Output is correct |
43 |
Correct |
58 ms |
16264 KB |
Output is correct |
44 |
Correct |
67 ms |
16308 KB |
Output is correct |
45 |
Correct |
142 ms |
16348 KB |
Output is correct |
46 |
Correct |
148 ms |
16324 KB |
Output is correct |
47 |
Correct |
918 ms |
89260 KB |
Output is correct |
48 |
Correct |
673 ms |
165924 KB |
Output is correct |
49 |
Correct |
756 ms |
181016 KB |
Output is correct |
50 |
Correct |
879 ms |
198720 KB |
Output is correct |
51 |
Execution timed out |
1099 ms |
213920 KB |
Time limit exceeded |
52 |
Halted |
0 ms |
0 KB |
- |