oj.uz

Submission #867753

# Submission time Handle Problem Language Result Execution time Memory
867753 2023-10-29T12:21:22 Z noyancanturk Sirni (COCI17_sirni) C++17
84 / 140
 994 ms 786432 KB 
#ifndef Local
    #pragma GCC optimize("O3,unroll-loops")
#endif
#include <bits/stdc++.h>
#define int long long
#define pb push_back
using namespace std;
int lim=1e7+1;
int mod=998244353;

using pii=pair<int,int>;

unordered_map<int,int>parent;
int find(int i){
    if(parent[i]==i)return i;
    return parent[i]=find(parent[i]);
}
bool unite(int i,int j){
    int x=find(i),y=find(j);
    parent[x]=y;
    return x^y;
}

struct edge{
    int cost,x,y;
};

void solve(){
    int n;
    cin>>n;
    int a[n];
    vector<bool>check(lim);
    for(int i=0;i<n;i++){
        cin>>a[i];
        parent[a[i]]=a[i];
        check[a[i]]=1;
    }
    if(check[1]){
        cout<<"0\n";
        return;
    }
    sort(a,a+n);
    int past[a[n-1]+1];
    past[a[n-1]]=a[n-1];
    for(int j=a[n-1]-1;j;j--){
        past[j]=past[j+1];
        if(check[j])past[j]=j;
    }
    vector<edge>v;
    for(int i=0;i<n-1;i++){
        if(a[i]==a[i+1])continue;
        v.pb({a[i+1]%a[i],a[i],a[i+1]});
        for(int j=2*a[i];j<=a[n-1];j+=a[i]){
            v.pb({past[j]%a[i],a[i],past[j]});
        }
    }
    sort(v.begin(),v.end(),[](edge&e1,edge&e2)-> bool {
        return e1.cost<e2.cost;
    });
    int ans=0;
    for(edge&e:v){
        if(unite(e.x,e.y)){
            ans+=e.cost;
        }
    }
    cout<<ans<<"\n";
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
#ifdef Local  
    freopen(".in","r",stdin);
    freopen(".out","w",stdout);
#else

#endif
    int t=1;
    //cin>>t;
    while (t--)
    {
        solve();
    }
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 80188 KB Output is correct
2 Correct 399 ms 179828 KB Output is correct
3 Correct 68 ms 80468 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2076 KB Output is correct
2 Runtime error 484 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 80228 KB Output is correct
2 Correct 66 ms 79896 KB Output is correct
3 Correct 69 ms 80364 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 295 ms 66484 KB Output is correct
2 Correct 772 ms 115600 KB Output is correct
3 Correct 401 ms 114924 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 18120 KB Output is correct
2 Correct 347 ms 111476 KB Output is correct
3 Correct 291 ms 60616 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 517 ms 115572 KB Output is correct
2 Correct 962 ms 213388 KB Output is correct
3 Correct 350 ms 65976 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 17760 KB Output is correct
2 Correct 994 ms 212192 KB Output is correct
3 Correct 386 ms 64456 KB Output is correct

Subtask #8
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 450 ms 136092 KB Output is correct
2 Runtime error 544 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #9
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 429 ms 136368 KB Output is correct
2 Runtime error 497 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #10
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 88160 KB Output is correct
2 Runtime error 590 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -