/*
Editor: Abdelrahman Hossam
Nickname: Blobo2_Blobo2
IOI next year isA :)
*/
/*#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,sse4.2,popcnt,abm,mmx,avx2,tune=native")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-funroll-all-loops,-fpeel-loops,-funswitch-loops")*/
#include<bits/stdc++.h>
using namespace std;
//#define int long long
#define endl "\n"
#define all(v) v.begin(),v.end()
#define gen(arr,n,nxt) generate(arr,arr+n,nxt)
#define Blobo2_el_7akim_elly_3ayz_yro7_IOI_w_3ayz_yakol_jilaty ios_base::sync_with_stdio(false);cin.tie(0);
const int mo=1e9+7,INF=1e18;
int nxt(){int x;cin>>x;return x;}
signed main(){
Blobo2_el_7akim_elly_3ayz_yro7_IOI_w_3ayz_yakol_jilaty
int n=nxt(),m=nxt();
set<pair<int,int> >st;
vector<pair<int,int> >v;
for(int i=0;i<m;i++){
int b=nxt(),p=nxt();
if(v.size()<2)v.push_back({b,p});
st.insert({b,p});
}
int from = v[0].first,to = v[1].first;
vector<pair<int,int> >adj[n+1];
for(auto x:st){
for(int j=x.first+x.second;j<n;j+=x.second){
adj[x.first].push_back({j,(j-x.first)/x.second});
if(st.find({j,x.second})!=st.end())break;
}
}
for(auto x:st){
for(int j=x.first-x.second;j>=0;j-=x.second){
adj[x.first].push_back({j,(x.first-j)/x.second});
if(st.find({j,x.second})!=st.end())break;
}
}
int dis[n],vis[n];
for(int i=0;i<n;i++)
dis[i]=INF,vis[i]=0;
dis[from]=0;
priority_queue<pair<int,int> >q;
q.push({0,from});
while(!q.empty()) {
int a=q.top().second;q.pop();
if(vis[a])continue;
vis[a]=1;
for(auto u:adj[a]){
int b=u.first,w=u.second;
if(dis[a]+w<dis[b]){
dis[b]=dis[a]+w;
q.push({-dis[b],b});
}
}
}
if(dis[to]==INF)cout<<-1<<endl;
else cout<<dis[to]<<endl;
return 0;
}
Compilation message
skyscraper.cpp:19:24: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
19 | const int mo=1e9+7,INF=1e18;
| ^~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
2 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
204 KB |
Output is correct |
14 |
Correct |
2 ms |
460 KB |
Output is correct |
15 |
Correct |
2 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
2 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
204 KB |
Output is correct |
14 |
Correct |
2 ms |
460 KB |
Output is correct |
15 |
Correct |
2 ms |
460 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
3 ms |
588 KB |
Output is correct |
18 |
Correct |
1 ms |
460 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
2 ms |
460 KB |
Output is correct |
21 |
Correct |
1 ms |
332 KB |
Output is correct |
22 |
Correct |
1 ms |
460 KB |
Output is correct |
23 |
Correct |
2 ms |
460 KB |
Output is correct |
24 |
Correct |
3 ms |
588 KB |
Output is correct |
25 |
Correct |
3 ms |
588 KB |
Output is correct |
26 |
Correct |
1 ms |
460 KB |
Output is correct |
27 |
Correct |
1 ms |
460 KB |
Output is correct |
28 |
Correct |
4 ms |
588 KB |
Output is correct |
29 |
Correct |
4 ms |
1100 KB |
Output is correct |
30 |
Correct |
2 ms |
588 KB |
Output is correct |
31 |
Correct |
2 ms |
844 KB |
Output is correct |
32 |
Correct |
2 ms |
712 KB |
Output is correct |
33 |
Correct |
6 ms |
1740 KB |
Output is correct |
34 |
Correct |
6 ms |
1740 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
1 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
2 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
204 KB |
Output is correct |
14 |
Correct |
2 ms |
332 KB |
Output is correct |
15 |
Correct |
3 ms |
440 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
3 ms |
588 KB |
Output is correct |
18 |
Correct |
2 ms |
460 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
2 ms |
460 KB |
Output is correct |
21 |
Correct |
1 ms |
332 KB |
Output is correct |
22 |
Correct |
1 ms |
460 KB |
Output is correct |
23 |
Correct |
2 ms |
460 KB |
Output is correct |
24 |
Correct |
3 ms |
588 KB |
Output is correct |
25 |
Correct |
2 ms |
588 KB |
Output is correct |
26 |
Correct |
1 ms |
460 KB |
Output is correct |
27 |
Correct |
1 ms |
460 KB |
Output is correct |
28 |
Correct |
4 ms |
588 KB |
Output is correct |
29 |
Correct |
4 ms |
1100 KB |
Output is correct |
30 |
Correct |
2 ms |
588 KB |
Output is correct |
31 |
Correct |
2 ms |
716 KB |
Output is correct |
32 |
Correct |
2 ms |
716 KB |
Output is correct |
33 |
Correct |
6 ms |
1868 KB |
Output is correct |
34 |
Correct |
7 ms |
1780 KB |
Output is correct |
35 |
Correct |
32 ms |
2536 KB |
Output is correct |
36 |
Correct |
5 ms |
716 KB |
Output is correct |
37 |
Correct |
43 ms |
3348 KB |
Output is correct |
38 |
Correct |
47 ms |
3524 KB |
Output is correct |
39 |
Correct |
49 ms |
3552 KB |
Output is correct |
40 |
Correct |
48 ms |
3524 KB |
Output is correct |
41 |
Correct |
47 ms |
3524 KB |
Output is correct |
42 |
Correct |
6 ms |
460 KB |
Output is correct |
43 |
Correct |
6 ms |
460 KB |
Output is correct |
44 |
Correct |
7 ms |
460 KB |
Output is correct |
45 |
Correct |
36 ms |
6040 KB |
Output is correct |
46 |
Correct |
36 ms |
6016 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
2 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
204 KB |
Output is correct |
14 |
Correct |
2 ms |
332 KB |
Output is correct |
15 |
Correct |
2 ms |
336 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
3 ms |
588 KB |
Output is correct |
18 |
Correct |
2 ms |
460 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
2 ms |
460 KB |
Output is correct |
21 |
Correct |
1 ms |
332 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
2 ms |
460 KB |
Output is correct |
24 |
Correct |
3 ms |
588 KB |
Output is correct |
25 |
Correct |
3 ms |
588 KB |
Output is correct |
26 |
Correct |
1 ms |
460 KB |
Output is correct |
27 |
Correct |
1 ms |
460 KB |
Output is correct |
28 |
Correct |
3 ms |
588 KB |
Output is correct |
29 |
Correct |
4 ms |
1100 KB |
Output is correct |
30 |
Correct |
2 ms |
588 KB |
Output is correct |
31 |
Correct |
2 ms |
716 KB |
Output is correct |
32 |
Correct |
2 ms |
716 KB |
Output is correct |
33 |
Correct |
7 ms |
1740 KB |
Output is correct |
34 |
Correct |
7 ms |
1740 KB |
Output is correct |
35 |
Correct |
31 ms |
2508 KB |
Output is correct |
36 |
Correct |
5 ms |
716 KB |
Output is correct |
37 |
Correct |
42 ms |
3320 KB |
Output is correct |
38 |
Correct |
49 ms |
3508 KB |
Output is correct |
39 |
Correct |
51 ms |
3560 KB |
Output is correct |
40 |
Correct |
47 ms |
3524 KB |
Output is correct |
41 |
Correct |
51 ms |
3488 KB |
Output is correct |
42 |
Correct |
6 ms |
460 KB |
Output is correct |
43 |
Correct |
6 ms |
460 KB |
Output is correct |
44 |
Correct |
7 ms |
460 KB |
Output is correct |
45 |
Correct |
38 ms |
6000 KB |
Output is correct |
46 |
Correct |
38 ms |
6036 KB |
Output is correct |
47 |
Correct |
165 ms |
11112 KB |
Output is correct |
48 |
Correct |
49 ms |
4428 KB |
Output is correct |
49 |
Correct |
35 ms |
3528 KB |
Output is correct |
50 |
Correct |
29 ms |
3292 KB |
Output is correct |
51 |
Correct |
88 ms |
6448 KB |
Output is correct |
52 |
Correct |
95 ms |
7104 KB |
Output is correct |
53 |
Correct |
31 ms |
4168 KB |
Output is correct |
54 |
Correct |
3 ms |
1612 KB |
Output is correct |
55 |
Correct |
4 ms |
2120 KB |
Output is correct |
56 |
Correct |
23 ms |
3532 KB |
Output is correct |
57 |
Correct |
71 ms |
10412 KB |
Output is correct |
58 |
Correct |
11 ms |
2292 KB |
Output is correct |
59 |
Correct |
12 ms |
2540 KB |
Output is correct |
60 |
Correct |
15 ms |
3252 KB |
Output is correct |
61 |
Correct |
15 ms |
2564 KB |
Output is correct |
62 |
Correct |
93 ms |
7704 KB |
Output is correct |
63 |
Correct |
115 ms |
24172 KB |
Output is correct |
64 |
Correct |
118 ms |
27452 KB |
Output is correct |
65 |
Correct |
160 ms |
37192 KB |
Output is correct |
66 |
Correct |
298 ms |
64104 KB |
Output is correct |
67 |
Correct |
284 ms |
64232 KB |
Output is correct |