30pts求条
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30pts求条
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covonant楼主2024/12/4 13:46
#include<bits/stdc++.h>
using namespace std;
vector<int> v[5];
int n,a[10005];
int main(){
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		v[a[i]%3].push_back(a[i]);
	}
	int c0=v[0].size(),c1=v[1].size(),c2=v[2].size();
	if(n==2){
		if((a[1]+a[2])%3==0){
			cout<<"No";
		}
		else{
			cout<<"Yes";
			cout<<"\n";
			cout<<a[1]<<" "<<a[2];
		}
		return 0;
	}
	if(n==1){
		if(a[1]%3==0) cout<<"No";
		else cout<<a[1];
	}
	if(c0-1>c1+c2){
		cout<<"No";
		return 0;
	}
	cout<<"Yes\n";
	if(c0==1){
		for(int i=0;i<c1;i++) cout<<v[1][i]<<" ";
		cout<<v[0][0]<<" ";
		for(int i=0;i<c2;i++) cout<<v[2][i]<<" ";
	}else{
		int pos1=0,pos2=0,pos0=0;
		int k1=c0/2;
		int k2=c0-1-c0/2;
		int s1=c1-k1+1;//开头输出s1个1(mod)
		int s2=c2-k2+1;//然后输出s2个2(mod)
		if(pos0<c0) cout<<v[0][pos0++]<<" ";		
		for(int i=1;i<=s1;i++) if(pos1<c1) cout<<v[1][pos1++]<<" ";
		if(pos0<c0) cout<<v[0][pos0++]<<" ";
		for(int i=1;i<=s2;i++) if(pos2<c2) cout<<v[2][pos2++]<<" ";
		if(pos0<c0) cout<<v[0][pos0++]<<" ";		
		while(pos1<c1&&pos2<c2&&pos0<c0){
			if(pos1<c1&&pos2<c2&&pos0<c0) cout<<v[1][pos1++]<<" ";
			if(pos1<c1&&pos2<c2&&pos0<c0) cout<<v[0][pos0++]<<" ";
			if(pos1<c1&&pos2<c2&&pos0<c0) cout<<v[2][pos2++]<<" ";
			if(pos1<c1&&pos2<c2&&pos0<c0) cout<<v[0][pos0++]<<" "; 
		}
	}
	return 0;
} 
2024/12/4 13:46
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