#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
typedef int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;
vector<int> al[5220000];
lli dis[5220000],n,rn;
priority_queue<ii,vector<ii>,greater<ii>> s;
map<ii,int> ma;
int minp=10000000, maxp=-1;
set<int> pset;
lli dij(lli so,lli t)
{
for(lli i=0;i<5220000;++i)
dis[i]=1000000000;
s.push(mp(0,so));
dis[so%10000000]=0;
while(s.size()!=0)
{
if(s.size()>rn*n+n)
exit(1);
ii v=(s.top());
s.pop();
if(dis[v.S]!=v.F)
continue;
if((v.S)%n==t)
return(v.F);
dis[v.S]=v.F;
if(v.S<rn*n)
{
al[v.S].pb(v.S%n+rn*n);
if(v.S%n+v.S/n<=maxp)
al[v.S].pb(v.S+v.S/n+1*10000000);
if(v.S%n-v.S/n>=minp)
al[v.S].pb(v.S-v.S/n+1*10000000);
}
for(lli i=0;i<al[v.S].size();++i)
{
if((al[v.S][i]%10000000)%n < minp or
(al[v.S][i]%10000000)%n > maxp) continue;
if(al[v.S][i]/10000000+v.F<dis[al[v.S][i]%10000000])
{
dis[al[v.S][i]%10000000]=al[v.S][i]/10000000+v.F;
s.push(mp(dis[al[v.S][i]%10000000],al[v.S][i]%10000000));
}
}
if(v.S<rn*n)
{
if(v.S%n+v.S/n<=maxp)
al[v.S].pop_back();
if(v.S%n-v.S/n>=minp)
al[v.S].pop_back();
al[v.S].pop_back();
}
}
if(dis[t]==1000000000)
return(-1);
return(dis[t]);
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
lli test=1;
for(;test>0;--test)
{
lli m, from, to,t1=0;
int g = -1;
cin>>n>>m;
rn=40;
for(lli i=0;i<m;++i)
{
lli f,se;
cin>>f>>se;
minp = min(minp, f);
maxp = max(maxp, f);
pset.insert(f);
g = (g==-1)?se:__gcd(g, se);
if(i==0) from = f;
if(i==1) to = f;
if(ma.find(mp(f, se))==ma.end()) {
ma[mp(f, se)] = 1;
} else continue;
if(se<rn)
{
al[rn*n+f].pb((se)*n+f+0*10000000);
t1+=2;
}
if(se>=rn)
{
lli p=f+se;
while(p<n)
{
al[rn*n+f].pb(rn*n+p+((p-f)/se)*10000000);
p+=se;
t1++;
}
p=f-se;
while(p>=0)
{
al[rn*n+f].pb(rn*n+p+((f-p)/se)*10000000);
p-=se;
t1++;
}
}
}
if(abs(to-from)%g!=0) cout << -1 << endl;
else cout<<dij(rn*n+from,rn*n+to)<<endl;
}
return(0);
}
Compilation message
skyscraper.cpp: In function 'lli dij(lli, lli)':
skyscraper.cpp:31:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(s.size()>rn*n+n)
~~~~~~~~^~~~~~~
skyscraper.cpp:48:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(lli i=0;i<al[v.S].size();++i)
~^~~~~~~~~~~~~~~
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:119:37: warning: 'from' may be used uninitialized in this function [-Wmaybe-uninitialized]
else cout<<dij(rn*n+from,rn*n+to)<<endl;
^
skyscraper.cpp:119:37: warning: 'to' may be used uninitialized in this function [-Wmaybe-uninitialized]
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
84 ms |
143300 KB |
Output is correct |
2 |
Correct |
88 ms |
143352 KB |
Output is correct |
3 |
Correct |
83 ms |
143352 KB |
Output is correct |
4 |
Correct |
82 ms |
143244 KB |
Output is correct |
5 |
Correct |
94 ms |
143352 KB |
Output is correct |
6 |
Correct |
83 ms |
143352 KB |
Output is correct |
7 |
Correct |
83 ms |
143352 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
83 ms |
143356 KB |
Output is correct |
2 |
Correct |
88 ms |
143352 KB |
Output is correct |
3 |
Correct |
82 ms |
143352 KB |
Output is correct |
4 |
Correct |
86 ms |
143352 KB |
Output is correct |
5 |
Correct |
88 ms |
143356 KB |
Output is correct |
6 |
Correct |
87 ms |
143400 KB |
Output is correct |
7 |
Correct |
90 ms |
143352 KB |
Output is correct |
8 |
Correct |
83 ms |
143352 KB |
Output is correct |
9 |
Correct |
84 ms |
143352 KB |
Output is correct |
10 |
Correct |
83 ms |
143352 KB |
Output is correct |
11 |
Correct |
85 ms |
143608 KB |
Output is correct |
12 |
Correct |
83 ms |
143352 KB |
Output is correct |
13 |
Correct |
89 ms |
143404 KB |
Output is correct |
14 |
Correct |
85 ms |
143608 KB |
Output is correct |
15 |
Correct |
86 ms |
143656 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
83 ms |
143352 KB |
Output is correct |
2 |
Correct |
82 ms |
143352 KB |
Output is correct |
3 |
Correct |
92 ms |
143352 KB |
Output is correct |
4 |
Correct |
92 ms |
143352 KB |
Output is correct |
5 |
Correct |
88 ms |
143352 KB |
Output is correct |
6 |
Correct |
86 ms |
143352 KB |
Output is correct |
7 |
Correct |
94 ms |
143352 KB |
Output is correct |
8 |
Correct |
83 ms |
143352 KB |
Output is correct |
9 |
Correct |
84 ms |
143356 KB |
Output is correct |
10 |
Correct |
93 ms |
143364 KB |
Output is correct |
11 |
Correct |
84 ms |
143608 KB |
Output is correct |
12 |
Correct |
85 ms |
143352 KB |
Output is correct |
13 |
Correct |
82 ms |
143352 KB |
Output is correct |
14 |
Correct |
88 ms |
143608 KB |
Output is correct |
15 |
Correct |
102 ms |
143608 KB |
Output is correct |
16 |
Correct |
84 ms |
143480 KB |
Output is correct |
17 |
Correct |
97 ms |
143736 KB |
Output is correct |
18 |
Correct |
93 ms |
143480 KB |
Output is correct |
19 |
Correct |
85 ms |
143352 KB |
Output is correct |
20 |
Correct |
84 ms |
143736 KB |
Output is correct |
21 |
Correct |
87 ms |
143480 KB |
Output is correct |
22 |
Correct |
82 ms |
143480 KB |
Output is correct |
23 |
Correct |
85 ms |
143608 KB |
Output is correct |
24 |
Correct |
85 ms |
143736 KB |
Output is correct |
25 |
Correct |
84 ms |
143736 KB |
Output is correct |
26 |
Correct |
90 ms |
143608 KB |
Output is correct |
27 |
Correct |
95 ms |
143480 KB |
Output is correct |
28 |
Correct |
94 ms |
143992 KB |
Output is correct |
29 |
Correct |
99 ms |
145016 KB |
Output is correct |
30 |
Correct |
94 ms |
143816 KB |
Output is correct |
31 |
Correct |
99 ms |
143992 KB |
Output is correct |
32 |
Correct |
87 ms |
143608 KB |
Output is correct |
33 |
Correct |
106 ms |
145656 KB |
Output is correct |
34 |
Correct |
107 ms |
146040 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
86 ms |
143352 KB |
Output is correct |
2 |
Correct |
83 ms |
143304 KB |
Output is correct |
3 |
Correct |
83 ms |
143352 KB |
Output is correct |
4 |
Correct |
83 ms |
143352 KB |
Output is correct |
5 |
Correct |
82 ms |
143352 KB |
Output is correct |
6 |
Correct |
83 ms |
143352 KB |
Output is correct |
7 |
Correct |
86 ms |
143352 KB |
Output is correct |
8 |
Correct |
85 ms |
143352 KB |
Output is correct |
9 |
Correct |
87 ms |
143352 KB |
Output is correct |
10 |
Correct |
86 ms |
143352 KB |
Output is correct |
11 |
Correct |
93 ms |
143608 KB |
Output is correct |
12 |
Correct |
83 ms |
143352 KB |
Output is correct |
13 |
Correct |
90 ms |
143352 KB |
Output is correct |
14 |
Correct |
101 ms |
143608 KB |
Output is correct |
15 |
Correct |
84 ms |
143608 KB |
Output is correct |
16 |
Correct |
82 ms |
143352 KB |
Output is correct |
17 |
Correct |
86 ms |
143736 KB |
Output is correct |
18 |
Correct |
83 ms |
143480 KB |
Output is correct |
19 |
Correct |
95 ms |
143480 KB |
Output is correct |
20 |
Correct |
91 ms |
143636 KB |
Output is correct |
21 |
Correct |
95 ms |
143480 KB |
Output is correct |
22 |
Correct |
86 ms |
143480 KB |
Output is correct |
23 |
Correct |
92 ms |
143608 KB |
Output is correct |
24 |
Correct |
85 ms |
143736 KB |
Output is correct |
25 |
Correct |
84 ms |
143608 KB |
Output is correct |
26 |
Correct |
95 ms |
143608 KB |
Output is correct |
27 |
Correct |
83 ms |
143484 KB |
Output is correct |
28 |
Correct |
85 ms |
143992 KB |
Output is correct |
29 |
Correct |
98 ms |
145016 KB |
Output is correct |
30 |
Correct |
85 ms |
143736 KB |
Output is correct |
31 |
Correct |
96 ms |
144120 KB |
Output is correct |
32 |
Correct |
85 ms |
143608 KB |
Output is correct |
33 |
Correct |
100 ms |
145660 KB |
Output is correct |
34 |
Correct |
107 ms |
146040 KB |
Output is correct |
35 |
Correct |
117 ms |
146280 KB |
Output is correct |
36 |
Correct |
91 ms |
143992 KB |
Output is correct |
37 |
Correct |
118 ms |
146936 KB |
Output is correct |
38 |
Correct |
130 ms |
147380 KB |
Output is correct |
39 |
Correct |
125 ms |
147424 KB |
Output is correct |
40 |
Correct |
128 ms |
147320 KB |
Output is correct |
41 |
Correct |
135 ms |
147368 KB |
Output is correct |
42 |
Correct |
105 ms |
143480 KB |
Output is correct |
43 |
Correct |
92 ms |
143608 KB |
Output is correct |
44 |
Correct |
89 ms |
143736 KB |
Output is correct |
45 |
Correct |
133 ms |
149216 KB |
Output is correct |
46 |
Correct |
138 ms |
149420 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
83 ms |
143352 KB |
Output is correct |
2 |
Correct |
92 ms |
143352 KB |
Output is correct |
3 |
Correct |
84 ms |
143352 KB |
Output is correct |
4 |
Correct |
87 ms |
143368 KB |
Output is correct |
5 |
Correct |
93 ms |
143352 KB |
Output is correct |
6 |
Correct |
99 ms |
143352 KB |
Output is correct |
7 |
Correct |
82 ms |
143356 KB |
Output is correct |
8 |
Correct |
91 ms |
143352 KB |
Output is correct |
9 |
Correct |
90 ms |
143352 KB |
Output is correct |
10 |
Correct |
86 ms |
143424 KB |
Output is correct |
11 |
Correct |
89 ms |
143608 KB |
Output is correct |
12 |
Correct |
91 ms |
143484 KB |
Output is correct |
13 |
Correct |
91 ms |
143352 KB |
Output is correct |
14 |
Correct |
85 ms |
143608 KB |
Output is correct |
15 |
Correct |
84 ms |
143608 KB |
Output is correct |
16 |
Correct |
84 ms |
143420 KB |
Output is correct |
17 |
Correct |
87 ms |
143736 KB |
Output is correct |
18 |
Correct |
84 ms |
143480 KB |
Output is correct |
19 |
Correct |
83 ms |
143356 KB |
Output is correct |
20 |
Correct |
86 ms |
143736 KB |
Output is correct |
21 |
Correct |
82 ms |
143480 KB |
Output is correct |
22 |
Correct |
84 ms |
143480 KB |
Output is correct |
23 |
Correct |
88 ms |
143608 KB |
Output is correct |
24 |
Correct |
86 ms |
143740 KB |
Output is correct |
25 |
Correct |
88 ms |
143608 KB |
Output is correct |
26 |
Correct |
84 ms |
143608 KB |
Output is correct |
27 |
Correct |
86 ms |
143480 KB |
Output is correct |
28 |
Correct |
88 ms |
143992 KB |
Output is correct |
29 |
Correct |
98 ms |
145016 KB |
Output is correct |
30 |
Correct |
90 ms |
143864 KB |
Output is correct |
31 |
Correct |
98 ms |
143992 KB |
Output is correct |
32 |
Correct |
85 ms |
143608 KB |
Output is correct |
33 |
Correct |
103 ms |
145656 KB |
Output is correct |
34 |
Correct |
109 ms |
145912 KB |
Output is correct |
35 |
Correct |
119 ms |
146400 KB |
Output is correct |
36 |
Correct |
89 ms |
144032 KB |
Output is correct |
37 |
Correct |
125 ms |
147064 KB |
Output is correct |
38 |
Correct |
129 ms |
147296 KB |
Output is correct |
39 |
Correct |
125 ms |
147320 KB |
Output is correct |
40 |
Correct |
139 ms |
147296 KB |
Output is correct |
41 |
Correct |
131 ms |
147320 KB |
Output is correct |
42 |
Correct |
89 ms |
143608 KB |
Output is correct |
43 |
Correct |
96 ms |
143504 KB |
Output is correct |
44 |
Correct |
91 ms |
143736 KB |
Output is correct |
45 |
Correct |
128 ms |
149112 KB |
Output is correct |
46 |
Correct |
141 ms |
149496 KB |
Output is correct |
47 |
Correct |
232 ms |
155896 KB |
Output is correct |
48 |
Correct |
109 ms |
146296 KB |
Output is correct |
49 |
Correct |
107 ms |
146040 KB |
Output is correct |
50 |
Correct |
104 ms |
145400 KB |
Output is correct |
51 |
Correct |
197 ms |
151284 KB |
Output is correct |
52 |
Correct |
178 ms |
151924 KB |
Output is correct |
53 |
Correct |
131 ms |
147960 KB |
Output is correct |
54 |
Correct |
77 ms |
122872 KB |
Output is correct |
55 |
Correct |
96 ms |
144120 KB |
Output is correct |
56 |
Correct |
124 ms |
148600 KB |
Output is correct |
57 |
Runtime error |
269 ms |
262144 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
58 |
Halted |
0 ms |
0 KB |
- |