#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=125;
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(){
| ^~~~
# |
결과 |
실행 시간 |
메모리 |
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 |
7 ms |
1484 KB |
Output is correct |
7 |
Correct |
1 ms |
1484 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
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 |
2 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 |
1996 KB |
Output is correct |
10 |
Correct |
4 ms |
2380 KB |
Output is correct |
11 |
Correct |
5 ms |
2380 KB |
Output is correct |
12 |
Correct |
4 ms |
2380 KB |
Output is correct |
13 |
Correct |
4 ms |
2380 KB |
Output is correct |
14 |
Correct |
5 ms |
2380 KB |
Output is correct |
15 |
Correct |
5 ms |
2380 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
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 |
1996 KB |
Output is correct |
10 |
Correct |
5 ms |
2380 KB |
Output is correct |
11 |
Correct |
6 ms |
2448 KB |
Output is correct |
12 |
Correct |
4 ms |
2380 KB |
Output is correct |
13 |
Correct |
3 ms |
2380 KB |
Output is correct |
14 |
Correct |
6 ms |
2380 KB |
Output is correct |
15 |
Correct |
6 ms |
2380 KB |
Output is correct |
16 |
Correct |
6 ms |
3276 KB |
Output is correct |
17 |
Correct |
31 ms |
8064 KB |
Output is correct |
18 |
Correct |
62 ms |
16944 KB |
Output is correct |
19 |
Correct |
80 ms |
19004 KB |
Output is correct |
20 |
Correct |
76 ms |
19132 KB |
Output is correct |
21 |
Correct |
15 ms |
4960 KB |
Output is correct |
22 |
Correct |
58 ms |
17192 KB |
Output is correct |
23 |
Correct |
66 ms |
15580 KB |
Output is correct |
24 |
Correct |
76 ms |
18296 KB |
Output is correct |
25 |
Correct |
77 ms |
19200 KB |
Output is correct |
26 |
Correct |
84 ms |
19120 KB |
Output is correct |
27 |
Correct |
75 ms |
19108 KB |
Output is correct |
28 |
Correct |
78 ms |
19168 KB |
Output is correct |
29 |
Correct |
107 ms |
19120 KB |
Output is correct |
30 |
Correct |
83 ms |
19164 KB |
Output is correct |
31 |
Correct |
92 ms |
19088 KB |
Output is correct |
32 |
Correct |
86 ms |
19052 KB |
Output is correct |
33 |
Correct |
135 ms |
19152 KB |
Output is correct |
34 |
Correct |
149 ms |
19272 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 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 |
2 ms |
1740 KB |
Output is correct |
9 |
Correct |
2 ms |
1996 KB |
Output is correct |
10 |
Correct |
6 ms |
2380 KB |
Output is correct |
11 |
Correct |
6 ms |
2380 KB |
Output is correct |
12 |
Correct |
4 ms |
2332 KB |
Output is correct |
13 |
Correct |
3 ms |
2380 KB |
Output is correct |
14 |
Correct |
8 ms |
2444 KB |
Output is correct |
15 |
Correct |
6 ms |
2324 KB |
Output is correct |
16 |
Correct |
6 ms |
3276 KB |
Output is correct |
17 |
Correct |
31 ms |
8060 KB |
Output is correct |
18 |
Correct |
59 ms |
16792 KB |
Output is correct |
19 |
Correct |
68 ms |
19012 KB |
Output is correct |
20 |
Correct |
64 ms |
19148 KB |
Output is correct |
21 |
Correct |
13 ms |
4932 KB |
Output is correct |
22 |
Correct |
59 ms |
17132 KB |
Output is correct |
23 |
Correct |
60 ms |
15576 KB |
Output is correct |
24 |
Correct |
77 ms |
18384 KB |
Output is correct |
25 |
Correct |
72 ms |
19148 KB |
Output is correct |
26 |
Correct |
76 ms |
19116 KB |
Output is correct |
27 |
Correct |
83 ms |
19132 KB |
Output is correct |
28 |
Correct |
82 ms |
19140 KB |
Output is correct |
29 |
Correct |
114 ms |
19120 KB |
Output is correct |
30 |
Correct |
79 ms |
19012 KB |
Output is correct |
31 |
Correct |
91 ms |
19000 KB |
Output is correct |
32 |
Correct |
87 ms |
19024 KB |
Output is correct |
33 |
Correct |
136 ms |
19052 KB |
Output is correct |
34 |
Correct |
136 ms |
19144 KB |
Output is correct |
35 |
Correct |
95 ms |
14844 KB |
Output is correct |
36 |
Correct |
57 ms |
11200 KB |
Output is correct |
37 |
Correct |
168 ms |
19008 KB |
Output is correct |
38 |
Correct |
150 ms |
19916 KB |
Output is correct |
39 |
Correct |
171 ms |
20036 KB |
Output is correct |
40 |
Correct |
157 ms |
19892 KB |
Output is correct |
41 |
Correct |
153 ms |
19932 KB |
Output is correct |
42 |
Correct |
81 ms |
19700 KB |
Output is correct |
43 |
Correct |
73 ms |
19692 KB |
Output is correct |
44 |
Correct |
91 ms |
19768 KB |
Output is correct |
45 |
Correct |
185 ms |
19816 KB |
Output is correct |
46 |
Correct |
191 ms |
19908 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1612 KB |
Output is correct |
2 |
Correct |
1 ms |
1484 KB |
Output is correct |
3 |
Correct |
2 ms |
1484 KB |
Output is correct |
4 |
Correct |
2 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 |
1996 KB |
Output is correct |
10 |
Correct |
4 ms |
2380 KB |
Output is correct |
11 |
Correct |
8 ms |
2380 KB |
Output is correct |
12 |
Correct |
4 ms |
2380 KB |
Output is correct |
13 |
Correct |
4 ms |
2380 KB |
Output is correct |
14 |
Correct |
6 ms |
2408 KB |
Output is correct |
15 |
Correct |
9 ms |
2380 KB |
Output is correct |
16 |
Correct |
7 ms |
3172 KB |
Output is correct |
17 |
Correct |
42 ms |
8012 KB |
Output is correct |
18 |
Correct |
66 ms |
16928 KB |
Output is correct |
19 |
Correct |
75 ms |
19084 KB |
Output is correct |
20 |
Correct |
78 ms |
19208 KB |
Output is correct |
21 |
Correct |
17 ms |
5000 KB |
Output is correct |
22 |
Correct |
59 ms |
17120 KB |
Output is correct |
23 |
Correct |
68 ms |
15572 KB |
Output is correct |
24 |
Correct |
75 ms |
18236 KB |
Output is correct |
25 |
Correct |
75 ms |
19144 KB |
Output is correct |
26 |
Correct |
77 ms |
19076 KB |
Output is correct |
27 |
Correct |
70 ms |
19156 KB |
Output is correct |
28 |
Correct |
86 ms |
19068 KB |
Output is correct |
29 |
Correct |
111 ms |
19064 KB |
Output is correct |
30 |
Correct |
82 ms |
18980 KB |
Output is correct |
31 |
Correct |
105 ms |
19136 KB |
Output is correct |
32 |
Correct |
91 ms |
19052 KB |
Output is correct |
33 |
Correct |
179 ms |
19156 KB |
Output is correct |
34 |
Correct |
137 ms |
19156 KB |
Output is correct |
35 |
Correct |
109 ms |
14848 KB |
Output is correct |
36 |
Correct |
45 ms |
11188 KB |
Output is correct |
37 |
Correct |
208 ms |
19108 KB |
Output is correct |
38 |
Correct |
147 ms |
19860 KB |
Output is correct |
39 |
Correct |
153 ms |
19936 KB |
Output is correct |
40 |
Correct |
171 ms |
19996 KB |
Output is correct |
41 |
Correct |
160 ms |
19872 KB |
Output is correct |
42 |
Correct |
83 ms |
19732 KB |
Output is correct |
43 |
Correct |
79 ms |
19808 KB |
Output is correct |
44 |
Correct |
83 ms |
19792 KB |
Output is correct |
45 |
Correct |
199 ms |
19904 KB |
Output is correct |
46 |
Correct |
183 ms |
19788 KB |
Output is correct |
47 |
Execution timed out |
1089 ms |
110924 KB |
Time limit exceeded |
48 |
Halted |
0 ms |
0 KB |
- |