| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 949213 | 2024-03-19T03:48:11 Z | vjudge1 | Sirni (COCI17_sirni) | C++17 | 5000 ms | 455444 KB |
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define int long long
#define rnd(l, r) uniform_int_distribution<int>(l, r)(rng)
using namespace std;
void fp(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
int pow(int a,int b,int m){int ans=1;while(b){if(b&1){ans=(ans*a)%m;}b>>=1;a=(a*a)%m;}return ans;}
int binpow(int a,int b){int ans=1;while(b){if(b&1){ans=(ans*a);}b>>=1;a=(a*a);}return ans;}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int N = 1e7 + 2;
int32_t p[N];
bool have[N];
int32_t par[N],sz[N];
int find(int a){
if(par[a] == a)
return a;
return find(par[a]);
}
void connect(int a, int b){
a = find(a);
b = find(b);
if(a==b)
return;
if(sz[a] < sz[b])
swap(a,b);
par[b] = a;
sz[a] += sz[b];
}
main(){
iostream::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
int n;
cin >> n;
set <int32_t> st;
for(int i = 1; i <= n; i++){
cin >> p[i];
have[p[i]] = 1;
st.insert(p[i]);
}
vector <array <int32_t, 3> > g;
for(int i = 1; i < N; i++){
if(!have[i])continue;
sz[i] = 1;
par[i] = i;
for(int j = i; j < N; j += i){
auto it = st.lower_bound(j);
if(it == st.end())break;
j = *it;
j = j - (j % i);
int prev = *it;
g.pb({*it % i, *it, i});
it = st.upper_bound(j);
if(*it == prev)continue;
if(it == st.end())break;
j = *it;
j = j - j % i;
g.pb({*it % i, *it, i});
}
}
sort(all(g));
int ans = 0;
for(auto &[cost, a, b] : g){
if(find(a) != find(b)){
connect(a, b);
ans += cost;
}
}
cout << ans << endl;
}
/*
* Before implementing the problem:
Do I understand the problem correctly?
Which places are tricky? What do I need to remember to implement them correctly?
Which place is the heaviest by implementation? Can I do it simpler?
Which place is the slowest? Where do I need to be careful about constant factors and where I can choose slower but simpler implementation?
----------------------------------
If not AC:
Did you remember to do everything to handle the tricky places you thought about before?
Is the solution correct?
Do I understand the problem correctly?
----------------------------------
If you have a test on which the solution gives wrong answer:
Is the solution doing what it was supposed to do?
Is the problem in the code or in the idea?
*/
Compilation message
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 15 ms | 88920 KB | Output is correct |
| 2 | Correct | 64 ms | 91344 KB | Output is correct |
| 3 | Correct | 17 ms | 88856 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 7 ms | 9052 KB | Output is correct |
| 2 | Correct | 32 ms | 87628 KB | Output is correct |
| 3 | Correct | 16 ms | 88856 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 15 ms | 88880 KB | Output is correct |
| 2 | Correct | 12 ms | 72284 KB | Output is correct |
| 3 | Correct | 16 ms | 88984 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 558 ms | 42248 KB | Output is correct |
| 2 | Correct | 2007 ms | 117352 KB | Output is correct |
| 3 | Correct | 689 ms | 40108 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 65 ms | 18944 KB | Output is correct |
| 2 | Correct | 784 ms | 60576 KB | Output is correct |
| 3 | Correct | 572 ms | 42628 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 1280 ms | 65852 KB | Output is correct |
| 2 | Correct | 2529 ms | 113348 KB | Output is correct |
| 3 | Correct | 678 ms | 40748 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 181 ms | 18604 KB | Output is correct |
| 2 | Correct | 2262 ms | 113040 KB | Output is correct |
| 3 | Correct | 616 ms | 40672 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 671 ms | 111648 KB | Output is correct |
| 2 | Execution timed out | 5025 ms | 414060 KB | Time limit exceeded |
| 3 | Halted | 0 ms | 0 KB | - |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 678 ms | 111360 KB | Output is correct |
| 2 | Execution timed out | 5039 ms | 412688 KB | Time limit exceeded |
| 3 | Halted | 0 ms | 0 KB | - |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 92 ms | 92608 KB | Output is correct |
| 2 | Execution timed out | 5033 ms | 455444 KB | Time limit exceeded |
| 3 | Halted | 0 ms | 0 KB | - |