| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 414823 |
2021-05-31T08:35:26 Z |
amoo_safar |
City (JOI17_city) |
C++17 |
|
558 ms |
42152 KB |
#include "Encoder.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 30e4;
const int bl = 120;
const int sd = 58;
int mk[N];
mt19937 rng(sd);
vector<int> V;
vector<int> G[N];
int st[N], fn[N], T = 0;
void DFS(int u, int p){
st[u] = T ++;
shuffle(G[u].begin(), G[u].end(), rng);
bool fl = true;
bool lf = true;
for(auto adj : G[u]) if(adj != p) lf = false;
for(auto adj : G[u])
if((adj != p) && ((int) G[adj].size() > 1))
fl = false;
if((fl) && (!lf)){
for(auto adj : G[u]){
if(adj != p){
st[adj] = T;
fn[adj] = T + 1;
}
}
T ++;
} else {
for(auto adj : G[u])
if(adj != p)
DFS(adj, u);
}
fn[u] = T;
while(mk[fn[u] - st[u] ] == -1){
fn[u] ++;
T ++;
}
// cerr << "!! " << u << ' ' << st[u] << ' ' << fn[u] << '\n';
}
void Encode(int _n, int A[], int B[]){
memset(mk, -1, sizeof mk);
int cnt = 0;
for(int i = 1; i < N; i++){
int pr = (i + bl - 1) / bl;
// if(i > N / 2) pr += pr;
uniform_int_distribution<> Amoo(1, pr);
if(Amoo(rng) == 1){
mk[i] = V.size();
V.push_back(i);
}
}
int sz = V.size();
for(int i = 0; i < _n - 1; i++)
G[A[i]].push_back(B[i]), G[B[i]].push_back(A[i]);
T = 0;
DFS(0, -1);
cerr << "! " << V.size() << '\n';
// for(int i = 0; i < _n; i++)
// cerr << "! " << st[i] << ' ' << fn[i] << '\n';
for(int i = 0; i < _n; i++){
Code(i, 1ll * sz * st[i] + mk[fn[i] - st[i]]);
}
}
#include "Device.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 30e4;
const int bl = 120;
const int sd = 58;
mt19937 rng2(sd);
vector<int> V2;
void InitDevice(){
for(int i = 1; i < N; i++){
int pr = (i + bl - 1) / bl;
uniform_int_distribution<> Amoo(1, pr);
if(Amoo(rng2) == 1)
V2.push_back(i);
}
}
int Answer(long long S, long long T){
if(S == T)
return 2;
int sz = V2.size();
int s1 = S / sz, f1 = s1 + V2[S % sz];
int s2 = T / sz, f2 = s2 + V2[T % sz];
if(s2 <= s1 && s1 < f2) return 0;
if(s1 <= s2 && s2 < f1) return 1;
return 2;
}
Compilation message
Encoder.cpp: In function 'void Encode(int, int*, int*)':
Encoder.cpp:51:6: warning: unused variable 'cnt' [-Wunused-variable]
51 | int cnt = 0;
| ^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
19 ms |
8832 KB |
Output is correct |
| 2 |
Correct |
20 ms |
8948 KB |
Output is correct |
| 3 |
Correct |
20 ms |
8840 KB |
Output is correct |
| 4 |
Correct |
19 ms |
8828 KB |
Output is correct |
| 5 |
Correct |
20 ms |
8832 KB |
Output is correct |
| 6 |
Correct |
20 ms |
8808 KB |
Output is correct |
| 7 |
Correct |
20 ms |
8856 KB |
Output is correct |
| 8 |
Correct |
20 ms |
8832 KB |
Output is correct |
| 9 |
Correct |
20 ms |
8868 KB |
Output is correct |
| 10 |
Correct |
19 ms |
8844 KB |
Output is correct |
| 11 |
Correct |
20 ms |
8832 KB |
Output is correct |
| 12 |
Correct |
20 ms |
8868 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
220 ms |
17388 KB |
Output is correct - L = 649760 |
| 2 |
Correct |
237 ms |
17396 KB |
Output is correct - L = 676544 |
| 3 |
Correct |
249 ms |
17436 KB |
Output is correct - L = 658688 |
| 4 |
Correct |
213 ms |
17404 KB |
Output is correct - L = 521792 |
| 5 |
Correct |
498 ms |
41356 KB |
Output is correct - L = 244915872 |
| 6 |
Correct |
556 ms |
41796 KB |
Output is correct - L = 243583616 |
| 7 |
Correct |
516 ms |
41476 KB |
Output is correct - L = 244808736 |
| 8 |
Correct |
508 ms |
41056 KB |
Output is correct - L = 198728352 |
| 9 |
Correct |
464 ms |
42152 KB |
Output is correct - L = 24135360 |
| 10 |
Correct |
424 ms |
42140 KB |
Output is correct - L = 2392704 |
| 11 |
Correct |
413 ms |
42084 KB |
Output is correct - L = 261888 |
| 12 |
Correct |
495 ms |
42060 KB |
Output is correct - L = 45632 |
| 13 |
Correct |
475 ms |
41720 KB |
Output is correct - L = 121907872 |
| 14 |
Correct |
494 ms |
41552 KB |
Output is correct - L = 188363936 |
| 15 |
Correct |
224 ms |
17420 KB |
Output is correct - L = 664640 |
| 16 |
Correct |
213 ms |
17268 KB |
Output is correct - L = 675552 |
| 17 |
Correct |
219 ms |
17488 KB |
Output is correct - L = 659680 |
| 18 |
Partially correct |
545 ms |
41556 KB |
Output is partially correct - L = 280950272 |
| 19 |
Correct |
468 ms |
41580 KB |
Output is correct - L = 257515264 |
| 20 |
Correct |
475 ms |
41664 KB |
Output is correct - L = 247882944 |
| 21 |
Correct |
517 ms |
41540 KB |
Output is correct - L = 198050816 |
| 22 |
Correct |
464 ms |
41572 KB |
Output is correct - L = 245979296 |
| 23 |
Correct |
493 ms |
41556 KB |
Output is correct - L = 246648896 |
| 24 |
Correct |
469 ms |
41528 KB |
Output is correct - L = 248262880 |
| 25 |
Correct |
494 ms |
41468 KB |
Output is correct - L = 248255936 |
| 26 |
Correct |
507 ms |
41452 KB |
Output is correct - L = 253001664 |
| 27 |
Correct |
558 ms |
41332 KB |
Output is correct - L = 256530208 |
