#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<ll> vi;
typedef pair<ll,ll> pii;
typedef vector<pii> vii;
typedef vector<vii> vvii;
int main(){
ll l,n;
cin >> l >> n;
vii v(n);
for (ll i=0;i<n;i++) cin >> v[i].first >> v[i].second;
pii in=v[0];
pii fin=v[1];
sort(v.begin(),v.end());
int inicio,final;
for (int i=0;i<n;i++){
if (v[i]==in) inicio=i;
if (v[i]==fin) final=i;
}
vvii conexiones(n);
for (ll i=0;i<n;i++){
pii x=v[i];
for (ll j=i-1;j>=0;j--){
pii y=v[j];
if (y.first%x.second==x.first%x.second){
conexiones[i].push_back(pii{abs(x.first-y.first)/x.second,j});
if (x.second==y.second) break;
}
}
for (ll j=i+1;j<n;j++){
pii y=v[j];
if (y.first%x.second==x.first%x.second){
conexiones[i].push_back(pii{abs(x.first-y.first)/x.second,j});
if (x.second==y.second) break;
}
}
}
priority_queue<pii> cola;
cola.push(pii{0,inicio});
bool T=true;
vi porvisitar(n,true);
//cerr << final << '\n';
//for (int i=0;i<n;i++){
// for (pii x:conexiones[i]) cerr << x.second<<' '<<x.first<<' '<<' ';
// cerr<<'\n';
//}
while (cola.size()){
pii x=cola.top();
cola.pop();
if (porvisitar[x.second]){
porvisitar[x.second]=false;
if (x.second==final){
T=false;
cout << -x.first << '\n';
break;
}
for (pii y:conexiones[x.second]){
if (porvisitar[y.second]) cola.push(pii{x.first-y.first,y.second});
}
}
}
if (T) cout << -1<<'\n';
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:57:27: warning: 'final' may be used uninitialized in this function [-Wmaybe-uninitialized]
57 | if (x.second==final){
| ^~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 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 |
2 ms |
460 KB |
Output is correct |
11 |
Correct |
22 ms |
2780 KB |
Output is correct |
12 |
Correct |
3 ms |
1480 KB |
Output is correct |
13 |
Correct |
2 ms |
460 KB |
Output is correct |
14 |
Correct |
31 ms |
3228 KB |
Output is correct |
15 |
Correct |
33 ms |
3268 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 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 |
2 ms |
460 KB |
Output is correct |
11 |
Correct |
21 ms |
2720 KB |
Output is correct |
12 |
Correct |
3 ms |
1480 KB |
Output is correct |
13 |
Correct |
2 ms |
460 KB |
Output is correct |
14 |
Correct |
31 ms |
3276 KB |
Output is correct |
15 |
Correct |
31 ms |
3220 KB |
Output is correct |
16 |
Correct |
6 ms |
716 KB |
Output is correct |
17 |
Correct |
21 ms |
1540 KB |
Output is correct |
18 |
Correct |
7 ms |
332 KB |
Output is correct |
19 |
Correct |
3 ms |
332 KB |
Output is correct |
20 |
Correct |
2 ms |
460 KB |
Output is correct |
21 |
Correct |
9 ms |
508 KB |
Output is correct |
22 |
Correct |
4 ms |
332 KB |
Output is correct |
23 |
Correct |
7 ms |
332 KB |
Output is correct |
24 |
Correct |
23 ms |
668 KB |
Output is correct |
25 |
Correct |
24 ms |
600 KB |
Output is correct |
26 |
Correct |
4 ms |
716 KB |
Output is correct |
27 |
Correct |
21 ms |
14264 KB |
Output is correct |
28 |
Correct |
25 ms |
732 KB |
Output is correct |
29 |
Correct |
6 ms |
844 KB |
Output is correct |
30 |
Correct |
1 ms |
332 KB |
Output is correct |
31 |
Correct |
4 ms |
460 KB |
Output is correct |
32 |
Correct |
3 ms |
464 KB |
Output is correct |
33 |
Correct |
31 ms |
3324 KB |
Output is correct |
34 |
Correct |
31 ms |
3276 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 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 |
2 ms |
460 KB |
Output is correct |
11 |
Correct |
22 ms |
2848 KB |
Output is correct |
12 |
Correct |
3 ms |
1480 KB |
Output is correct |
13 |
Correct |
2 ms |
460 KB |
Output is correct |
14 |
Correct |
32 ms |
3268 KB |
Output is correct |
15 |
Correct |
31 ms |
3236 KB |
Output is correct |
16 |
Correct |
5 ms |
716 KB |
Output is correct |
17 |
Correct |
22 ms |
1612 KB |
Output is correct |
18 |
Correct |
7 ms |
372 KB |
Output is correct |
19 |
Correct |
3 ms |
332 KB |
Output is correct |
20 |
Correct |
2 ms |
460 KB |
Output is correct |
21 |
Correct |
9 ms |
492 KB |
Output is correct |
22 |
Correct |
4 ms |
332 KB |
Output is correct |
23 |
Correct |
7 ms |
332 KB |
Output is correct |
24 |
Correct |
22 ms |
716 KB |
Output is correct |
25 |
Correct |
23 ms |
588 KB |
Output is correct |
26 |
Correct |
4 ms |
716 KB |
Output is correct |
27 |
Correct |
21 ms |
14256 KB |
Output is correct |
28 |
Correct |
24 ms |
728 KB |
Output is correct |
29 |
Correct |
6 ms |
844 KB |
Output is correct |
30 |
Correct |
1 ms |
332 KB |
Output is correct |
31 |
Correct |
4 ms |
460 KB |
Output is correct |
32 |
Correct |
3 ms |
460 KB |
Output is correct |
33 |
Correct |
31 ms |
3268 KB |
Output is correct |
34 |
Correct |
32 ms |
3272 KB |
Output is correct |
35 |
Execution timed out |
1091 ms |
14356 KB |
Time limit exceeded |
36 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
208 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 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 |
3 ms |
464 KB |
Output is correct |
11 |
Correct |
22 ms |
2808 KB |
Output is correct |
12 |
Correct |
3 ms |
1480 KB |
Output is correct |
13 |
Correct |
2 ms |
460 KB |
Output is correct |
14 |
Correct |
33 ms |
3320 KB |
Output is correct |
15 |
Correct |
31 ms |
3240 KB |
Output is correct |
16 |
Correct |
6 ms |
716 KB |
Output is correct |
17 |
Correct |
22 ms |
1596 KB |
Output is correct |
18 |
Correct |
7 ms |
332 KB |
Output is correct |
19 |
Correct |
3 ms |
332 KB |
Output is correct |
20 |
Correct |
2 ms |
460 KB |
Output is correct |
21 |
Correct |
9 ms |
460 KB |
Output is correct |
22 |
Correct |
4 ms |
332 KB |
Output is correct |
23 |
Correct |
7 ms |
460 KB |
Output is correct |
24 |
Correct |
22 ms |
708 KB |
Output is correct |
25 |
Correct |
24 ms |
588 KB |
Output is correct |
26 |
Correct |
4 ms |
716 KB |
Output is correct |
27 |
Correct |
22 ms |
14256 KB |
Output is correct |
28 |
Correct |
24 ms |
784 KB |
Output is correct |
29 |
Correct |
6 ms |
844 KB |
Output is correct |
30 |
Correct |
1 ms |
336 KB |
Output is correct |
31 |
Correct |
4 ms |
460 KB |
Output is correct |
32 |
Correct |
3 ms |
460 KB |
Output is correct |
33 |
Correct |
31 ms |
3304 KB |
Output is correct |
34 |
Correct |
31 ms |
3232 KB |
Output is correct |
35 |
Execution timed out |
1089 ms |
14448 KB |
Time limit exceeded |
36 |
Halted |
0 ms |
0 KB |
- |