#include<bits/stdc++.h>
#define ll long long
#define ntr "\n"
#define mod (ll)(1e9+7)
#define taskname "temp"
#define frep freopen(taskname".inp","r",stdin); freopen(taskname".out","w",stdout);
using namespace std;
vector<array<int,3>> adj[2501][2501];
ll dist[2501][2501];
ll vis[2501][2501];
ll n,q;
ll l[2501];
ll r[2501];
int main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
//frep;
cin>>n;
for(int i=1;i<=n;i++){
cin>>l[i]>>r[i];
}
for(int i=1;i<=n;i++){
ll mx=0,mn=1e18;
adj[l[i]][r[i]].push_back({i,i,1});
for(int j=i;j<=n;j++){
mx=max(mx,r[j]);
mn=min(mn,l[j]);
if(i!=j){
//cout<<i<<' '<<j<<' '<<mn<<' '<<mx<<ntr;
adj[i][mx].push_back({i,j,1});
adj[mn][j].push_back({i,j,1});
adj[i+1][j].push_back({i,j,0});
adj[i][j-1].push_back({i,j,0});
}
}
}
memset(dist,0x3f,sizeof(dist));
dist[1][n]=0;
deque<array<ll,2>> dq;
dq.push_front({1,n});
while(!dq.empty()){
ll u=dq.front()[0],v=dq.front()[1];
dq.pop_front();
if(vis[u][v]) continue;
vis[u][v]=1;
for(auto i:adj[u][v]){
ll x=i[0],y=i[1],w=i[2];
if(dist[x][y]>dist[u][v]+w){
dist[x][y]=dist[u][v]+w;
if(w==0){
dq.push_front({x,y});
}
else{
dq.push_back({x,y});
}
}
}
}
// for(int i=1;i<=n;i++){
// for(int j=1;j<=n;j++){
// cout<<dist[i][j]<<' ';
// }
// cout<<ntr;
// }
cin>>q;
for(int i=1;i<=q;i++){
ll x;
cin>>x;
cout<<(dist[x][x] >= 1e18 ? -1 : dist[x][x])<<ntr;
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
83 ms |
196172 KB |
Output is correct |
2 |
Correct |
80 ms |
196176 KB |
Output is correct |
3 |
Correct |
84 ms |
196176 KB |
Output is correct |
4 |
Runtime error |
1008 ms |
904088 KB |
Execution killed with signal 11 |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
84 ms |
196208 KB |
Output is correct |
2 |
Correct |
84 ms |
196192 KB |
Output is correct |
3 |
Correct |
86 ms |
196192 KB |
Output is correct |
4 |
Correct |
83 ms |
196288 KB |
Output is correct |
5 |
Correct |
82 ms |
196304 KB |
Output is correct |
6 |
Correct |
82 ms |
196192 KB |
Output is correct |
7 |
Correct |
83 ms |
196104 KB |
Output is correct |
8 |
Correct |
84 ms |
196200 KB |
Output is correct |
9 |
Correct |
84 ms |
196236 KB |
Output is correct |
10 |
Correct |
78 ms |
196116 KB |
Output is correct |
11 |
Correct |
88 ms |
200800 KB |
Output is correct |
12 |
Correct |
94 ms |
200804 KB |
Output is correct |
13 |
Correct |
90 ms |
201056 KB |
Output is correct |
14 |
Correct |
95 ms |
201060 KB |
Output is correct |
15 |
Correct |
90 ms |
200800 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
84 ms |
196208 KB |
Output is correct |
2 |
Correct |
84 ms |
196192 KB |
Output is correct |
3 |
Correct |
86 ms |
196192 KB |
Output is correct |
4 |
Correct |
83 ms |
196288 KB |
Output is correct |
5 |
Correct |
82 ms |
196304 KB |
Output is correct |
6 |
Correct |
82 ms |
196192 KB |
Output is correct |
7 |
Correct |
83 ms |
196104 KB |
Output is correct |
8 |
Correct |
84 ms |
196200 KB |
Output is correct |
9 |
Correct |
84 ms |
196236 KB |
Output is correct |
10 |
Correct |
78 ms |
196116 KB |
Output is correct |
11 |
Correct |
88 ms |
200800 KB |
Output is correct |
12 |
Correct |
94 ms |
200804 KB |
Output is correct |
13 |
Correct |
90 ms |
201056 KB |
Output is correct |
14 |
Correct |
95 ms |
201060 KB |
Output is correct |
15 |
Correct |
90 ms |
200800 KB |
Output is correct |
16 |
Correct |
579 ms |
427148 KB |
Output is correct |
17 |
Correct |
776 ms |
448608 KB |
Output is correct |
18 |
Correct |
613 ms |
438644 KB |
Output is correct |
19 |
Correct |
560 ms |
433400 KB |
Output is correct |
20 |
Correct |
618 ms |
425464 KB |
Output is correct |
21 |
Correct |
721 ms |
451304 KB |
Output is correct |
22 |
Correct |
487 ms |
436232 KB |
Output is correct |
23 |
Correct |
650 ms |
455684 KB |
Output is correct |
24 |
Correct |
552 ms |
449796 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
84 ms |
196208 KB |
Output is correct |
2 |
Correct |
84 ms |
196192 KB |
Output is correct |
3 |
Correct |
86 ms |
196192 KB |
Output is correct |
4 |
Correct |
83 ms |
196288 KB |
Output is correct |
5 |
Correct |
82 ms |
196304 KB |
Output is correct |
6 |
Correct |
82 ms |
196192 KB |
Output is correct |
7 |
Correct |
83 ms |
196104 KB |
Output is correct |
8 |
Correct |
84 ms |
196200 KB |
Output is correct |
9 |
Correct |
84 ms |
196236 KB |
Output is correct |
10 |
Correct |
78 ms |
196116 KB |
Output is correct |
11 |
Correct |
88 ms |
200800 KB |
Output is correct |
12 |
Correct |
94 ms |
200804 KB |
Output is correct |
13 |
Correct |
90 ms |
201056 KB |
Output is correct |
14 |
Correct |
95 ms |
201060 KB |
Output is correct |
15 |
Correct |
90 ms |
200800 KB |
Output is correct |
16 |
Correct |
579 ms |
427148 KB |
Output is correct |
17 |
Correct |
776 ms |
448608 KB |
Output is correct |
18 |
Correct |
613 ms |
438644 KB |
Output is correct |
19 |
Correct |
560 ms |
433400 KB |
Output is correct |
20 |
Correct |
618 ms |
425464 KB |
Output is correct |
21 |
Correct |
721 ms |
451304 KB |
Output is correct |
22 |
Correct |
487 ms |
436232 KB |
Output is correct |
23 |
Correct |
650 ms |
455684 KB |
Output is correct |
24 |
Correct |
552 ms |
449796 KB |
Output is correct |
25 |
Correct |
86 ms |
196180 KB |
Output is correct |
26 |
Correct |
92 ms |
196176 KB |
Output is correct |
27 |
Correct |
573 ms |
447824 KB |
Output is correct |
28 |
Correct |
819 ms |
452176 KB |
Output is correct |
29 |
Correct |
605 ms |
425556 KB |
Output is correct |
30 |
Correct |
564 ms |
451412 KB |
Output is correct |
31 |
Correct |
548 ms |
454864 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
83 ms |
196172 KB |
Output is correct |
2 |
Correct |
80 ms |
196176 KB |
Output is correct |
3 |
Correct |
84 ms |
196176 KB |
Output is correct |
4 |
Runtime error |
1008 ms |
904088 KB |
Execution killed with signal 11 |
5 |
Halted |
0 ms |
0 KB |
- |