| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 414833 |
2021-05-31T08:44:10 Z |
amoo_safar |
City (JOI17_city) |
C++17 |
|
523 ms |
42168 KB |
#include "Encoder.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 30e4;
const int bl = 115;
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 = false;
for(auto adj : G[u])
if((adj != p) && ((int) G[adj].size() == 1))
fl = true;
if(fl){
for(auto adj : G[u]){
if(adj != p && G[adj].size() == 1){
st[adj] = T;
fn[adj] = T + 1;
}
}
T ++;
}
for(auto adj : G[u])
if(adj != p && G[adj].size() > 1)
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 = 115;
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:48:6: warning: unused variable 'cnt' [-Wunused-variable]
48 | int cnt = 0;
| ^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
19 ms |
8852 KB |
Output is correct |
| 2 |
Correct |
19 ms |
8800 KB |
Output is correct |
| 3 |
Correct |
22 ms |
8828 KB |
Output is correct |
| 4 |
Correct |
20 ms |
8856 KB |
Output is correct |
| 5 |
Correct |
22 ms |
8808 KB |
Output is correct |
| 6 |
Correct |
20 ms |
8928 KB |
Output is correct |
| 7 |
Correct |
19 ms |
8776 KB |
Output is correct |
| 8 |
Correct |
20 ms |
8852 KB |
Output is correct |
| 9 |
Correct |
19 ms |
8828 KB |
Output is correct |
| 10 |
Correct |
20 ms |
8832 KB |
Output is correct |
| 11 |
Correct |
19 ms |
8836 KB |
Output is correct |
| 12 |
Correct |
20 ms |
8832 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
252 ms |
17360 KB |
Output is correct - L = 590976 |
| 2 |
Correct |
216 ms |
17380 KB |
Output is correct - L = 618192 |
| 3 |
Correct |
212 ms |
17408 KB |
Output is correct - L = 583200 |
| 4 |
Correct |
232 ms |
17332 KB |
Output is correct - L = 511272 |
| 5 |
Correct |
475 ms |
41448 KB |
Output is correct - L = 221343840 |
| 6 |
Correct |
468 ms |
41472 KB |
Output is correct - L = 223431696 |
| 7 |
Correct |
490 ms |
41420 KB |
Output is correct - L = 221134860 |
| 8 |
Correct |
482 ms |
41168 KB |
Output is correct - L = 194721732 |
| 9 |
Correct |
415 ms |
42136 KB |
Output is correct - L = 22159656 |
| 10 |
Correct |
419 ms |
42080 KB |
Output is correct - L = 2134512 |
| 11 |
Correct |
417 ms |
42080 KB |
Output is correct - L = 253692 |
| 12 |
Correct |
426 ms |
42168 KB |
Output is correct - L = 40824 |
| 13 |
Correct |
451 ms |
41844 KB |
Output is correct - L = 109322784 |
| 14 |
Correct |
465 ms |
41620 KB |
Output is correct - L = 172871172 |
| 15 |
Correct |
221 ms |
17444 KB |
Output is correct - L = 584172 |
| 16 |
Correct |
221 ms |
17376 KB |
Output is correct - L = 605556 |
| 17 |
Correct |
222 ms |
17432 KB |
Output is correct - L = 594864 |
| 18 |
Partially correct |
523 ms |
41596 KB |
Output is partially correct - L = 271580688 |
| 19 |
Correct |
519 ms |
41556 KB |
Output is correct - L = 241778196 |
| 20 |
Incorrect |
520 ms |
41604 KB |
Wrong Answer [6] |
| 21 |
Halted |
0 ms |
0 KB |
- |
