Submission #863476

#	Time	Username	Problem	Language	Result	Execution time	Memory
863476		blacktulip	Sirni (COCI17_sirni)	C++17	140 / 140	1399 ms	654912 KiB

sirni

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long lo;
 
#define fi first
#define se second
#define endl "\n"
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)
#define _ << " " <<
 
const lo inf = 1000000000;
const lo li = 500005;
const lo mod = 1000000007;
 
int n,m,a[li],k,flag,t,fa[li],vis[10000005],mx[10000005],ind[10000005];
long long cev;
string s;
vector<pair<int,int>> v[10000002];
set<pair<int,int>> st;
 
inline int dsu(int x){
	if(x==fa[x])return x;
	return fa[x]=dsu(fa[x]);
}
 
int main(void){
	fio();
	cin>>n;
	FOR{
		fa[i]=i;
		cin>>a[i];
		mx[a[i]]=a[i];
	}
	for(int i=10000000-1;i>=1;i--){
		if(!mx[i])mx[i]=mx[i+1];
	}
	sort(a+1,a+n+1);
	FOR{
		if(!ind[a[i]])ind[a[i]]=i;
	}
	FOR{
		if(a[i]==a[i-1]){
			v[0].pb({i-1,i});
			continue;
		}
		if(mx[a[i]+1] && mx[a[i]*2]!=mx[a[i]+1])v[mx[a[i]+1]-a[i]].pb({i,ind[mx[a[i]+1]]});
		for(int j=a[i]*2;j<=10000000;j+=a[i]){
			vis[j]=i;
			if(mx[j] && mx[j]!=mx[j+a[i]])v[mx[j]-j].pb({i,ind[mx[j]]});
		}
	}
	for(int i=0;i<=10000000;i++){
		for(auto go:v[i]){
			int x=go.fi;
			int y=go.se;
			if(dsu(x)==dsu(y))continue;
			fa[dsu(x)]=dsu(y);
			cev+=i;
		}
	}
	cout<<cev<<endl;
	return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 14 / 14
• Subtask 7: 14 / 14
• Subtask 8: 14 / 14
• Subtask 9: 14 / 14
• Subtask 10: 14 / 14