Submission #1159988

#	Time	Username	Problem	Language	Result	Execution time	Memory
1159988		12345678	Sirni (COCI17_sirni)	C++17	0 / 140	557 ms	537752 KiB

sirni

#include <bits/stdc++.h>

using namespace std;

const int nx=1e5+5, kx=1e7+5;

int n, dsu[nx], mx, idx, res, p[nx];
vector<int> qrs[kx];
vector<pair<int, int>> edg[kx], v;

int find(int x)
{
    if (dsu[x]==x) return x;
    return dsu[x]=find(dsu[x]);
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) cin>>p[i], dsu[i]=i, mx=max(mx, p[i]), v.push_back({p[i], i});
    sort(v.begin(), v.end());
    idx=n-1;
    for (int i=1; i<=n; i++) for (int j=p[i]; j<=mx; j+=p[i]) qrs[j].push_back(i);
    for (int i=mx; i>=1; i--)
    {
        while (idx>0&&v[idx-1].first>=i) idx--;
        //cout<<"here "<<i<<' '<<v[idx].first<<' '<<v[idx].second<<'\n';
        for (auto x:qrs[i]) 
        {
            //if (x==1&&v[idx].second==4) cout<<"bug\n";
            edg[v[idx].first-i].push_back({x, v[idx].second});
        }
    }
    for (int i=1; i<n; i++) if (v[i].first==v[i-1].first) dsu[find(v[i].second)]=find(v[i-1].second);
    for (int i=0; i<=mx; i++)
        for (auto [u, v]:edg[i])
        {
            //cout<<"edg "<<u<<' '<<v<<' '<<i<<'\n';
            if (find(u)!=find(v)) res+=i, dsu[find(u)]=find(v);
        }
    cout<<res;

}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 14
• Subtask 6: 0 / 14
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• Subtask 10: 0 / 14