| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 888850 |
2023-12-18T09:28:32 Z |
asdasdqwer |
Sirni (COCI17_sirni) |
C++14 |
|
5000 ms |
437800 KB |
#pragma GCC optimize("O3")
#pragma GCC target("avx,avx2,sse4")
#include <bits/stdc++.h>
using namespace std;
struct DSU {
vector<int32_t> p, r;
DSU(int32_t n) {
p.assign(n,0);
r.assign(n,1);
for (int i=0;i<n;i++)p[i]=i;
}
int get(int32_t i) {
if (i != p[i]) p[i]=get(p[i]);
return p[i];
}
bool unite(int32_t a,int32_t b) {
// assert(a < p.size() && b < p.size());
a=get(a);
b=get(b);
if (a==b)return false;
if (r[a]<r[b])swap(a,b);
p[b]=a;
r[a]+=r[b];
return true;
}
};
signed test(int n, vector<int> b) {
vector<int32_t> clos(b.back()+1,-1);
for (int32_t x:b) {
clos[x]=x;
}
for (int32_t i=clos.size()-2;i>=0;i--) {
if (clos[i] == -1) {
clos[i]=clos[i+1];
}
}
// cout<<"here\n";
typedef array<int32_t,3> pii;
vector<pii> edg;
for (int32_t x:b) {
// cout<<x<<"\n";
vector<pii> tmp;
if (x != b.back()) {
tmp.push_back({(clos[x+1] % x), x, clos[x+1]});
}
// cout<<"after\n";
for (int32_t j=2*x;j<=b.back();j+=x) {
// cout<<j<<" "<<clos[j]<<"\n";
if (clos[j] != -1) {
if (tmp.size() == 0) {
tmp.push_back({clos[j] % x, clos[j], x});
}
else if (tmp.back()[1] != clos[j]) {
tmp.push_back({clos[j] % x, clos[j], x});
}
}
}
if (tmp.size() == 0 || tmp.back()[1] != clos[b.back()]) {
tmp.push_back({clos[b.back()] % x, clos[b.back()], x});
}
for (auto y:tmp) edg.push_back(y);
}
// cout<<edg.size()<<"\n";
sort(edg.begin(),edg.end());
map<int,int> mp;
for (int i=0;i<b.size();i++) {
mp[b[i]]=i;
}
for (auto &x:edg) {
// cout<<x[1]<<" "<<x[2]<<"\n";
x[1]=mp[x[1]];
x[2]=mp[x[2]];
}
// cout<<"\n";
DSU d(b.size());
int cost=0;
for (auto x:edg) {
if (d.unite(x[1], x[2])) {
// cout<<b[x[1]]<<" "<<b[x[2]]<<"\n";
cost+=x[0];
}
}
return cost;
}
bool brute() {
int len=(rand() % 100000)+100000;
vector<int> b;
set<int> chose;
for (int i=0;i<len;i++) {
int j=(rand()%100000)+1;
while (chose.find(j) != chose.end()) {
j=(rand()%100000)+1;
}
chose.insert(j);
b.push_back(j);
}
cout<<"gen numbers\n";
sort(b.begin(),b.end());
typedef array<int,3> pii;
vector<pii> g;
for (int i=0;i<len;i++) {
for (int j=i+1;j<len;j++) {
g.push_back({b[j] % b[i], j, i});
}
}
sort(g.begin(),g.end());
DSU d(len);
int cost=0;
for (auto x:g) {
if (d.unite(x[1], x[2])) {
// cout<<b[x[1]]<<" "<<b[x[2]]<<"\n";
cost += x[0];
}
}
cout<<"mst calc\n";
// cout<<"\n";
int cost2 = test(len, b);
cout<<"mst fast\n";
// cout<<"\n";
if (cost != cost2) {
cout<<cost<<" "<<cost2<<"\n";
}
// for (int x:b) {
// cout<<x<<" ";
// }
// cout<<"\n";
cout<<"finished\n";
cout.flush();
return true;
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n;cin>>n;
vector<int> a(n);
for (int &x:a)cin>>x;
if (n == 1) {
cout<<0<<"\n";
return 0;
}
sort(a.begin(),a.end());
vector<int> b;
for (int x:a) {
if (b.size()==0||b.back()!=x)b.push_back(x);
}
cout<<test(n,b)<<"\n";
}
Compilation message
sirni.cpp: In function 'int test(int, std::vector<int>)':
sirni.cpp:82:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
82 | for (int i=0;i<b.size();i++) {
| ~^~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
29 ms |
39584 KB |
Output is correct |
| 2 |
Correct |
87 ms |
43528 KB |
Output is correct |
| 3 |
Correct |
30 ms |
39684 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
672 KB |
Output is correct |
| 2 |
Correct |
242 ms |
40424 KB |
Output is correct |
| 3 |
Correct |
30 ms |
39760 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
29 ms |
39604 KB |
Output is correct |
| 2 |
Correct |
28 ms |
39512 KB |
Output is correct |
| 3 |
Correct |
29 ms |
39772 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
371 ms |
32588 KB |
Output is correct |
| 2 |
Correct |
1202 ms |
57496 KB |
Output is correct |
| 3 |
Correct |
477 ms |
32668 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
48 ms |
7780 KB |
Output is correct |
| 2 |
Correct |
647 ms |
55820 KB |
Output is correct |
| 3 |
Correct |
352 ms |
29176 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
779 ms |
55708 KB |
Output is correct |
| 2 |
Correct |
1567 ms |
107228 KB |
Output is correct |
| 3 |
Correct |
461 ms |
32412 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
114 ms |
9036 KB |
Output is correct |
| 2 |
Correct |
1630 ms |
105692 KB |
Output is correct |
| 3 |
Correct |
449 ms |
31752 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
515 ms |
68416 KB |
Output is correct |
| 2 |
Execution timed out |
5045 ms |
437800 KB |
Time limit exceeded |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
506 ms |
68712 KB |
Output is correct |
| 2 |
Execution timed out |
5049 ms |
435784 KB |
Time limit exceeded |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
96 ms |
43532 KB |
Output is correct |
| 2 |
Execution timed out |
5066 ms |
436776 KB |
Time limit exceeded |
| 3 |
Halted |
0 ms |
0 KB |
- |
