제출 #881717

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
881717		alexdd	Schools (IZhO13_school)	C++17	20 / 100	1633 ms	4176 KiB

school

#include<bits/stdc++.h>
using namespace std;
const int NRIT = 4e7;
int n,m,s;
pair<int,int> v[300005];
mt19937 rnd(921831);
int unde[300005];
signed main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>n>>m>>s;
    for(int i=0;i<n;i++)
    {
        cin>>v[i].first>>v[i].second;
        if(i<m)
            unde[i]=1;
        else if(i<m+s)
            unde[i]=2;
    }
    for(int pas=0;pas<NRIT;pas++)
    {
        int x = rnd()%n;
        int y = rnd()%n;
        if(unde[x]==unde[y])
            continue;
        if(unde[y]==0)
            swap(x,y);
        if(unde[x]==0)
        {
            if(unde[y]==1)
            {
                if(v[x].first - v[y].first > 0)
                    swap(unde[x],unde[y]);
            }
            else
            {
                if(v[x].second - v[y].second > 0)
                    swap(unde[x],unde[y]);
            }
        }
        else
        {
            if(unde[x]==2)
                swap(x,y);
            if(v[x].second - v[x].first + v[y].first - v[y].second > 0)
            {
                swap(unde[x],unde[y]);
            }
        }
    }
    long long sum=0;
    for(int i=0;i<n;i++)
    {
        if(unde[i]==1)
            sum += v[i].first;
        else if(unde[i]==2)
            sum += v[i].second;
    }
    cout<<sum;
    return 0;
}

• Subtask 1: 20 / 100