Submission #720631

#	Time	Username	Problem	Language	Result	Execution time	Memory
720631		bin9638	Carnival Tickets (IOI20_tickets)	C++17	25 / 100	848 ms	95212 KiB

tickets

#include <bits/stdc++.h>

#ifndef SKY
#include "tickets.h"
#endif // SKY

using namespace std;

#define N 1510
#define ll long long
#define fs first
#define sc second
#define ii pair<int,int>
#define pb push_back
#define iii pair<ll,ii>
#define iiii pair<ii,ii>

int ktr[N],times,n,m,f[N];
deque<iii>cost;
vector<int>lis[N][2];

#ifdef SKY
void allocate_tickets(vector<vector<int>>kq)
{
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<m;j++)
            cout<<kq[i][j]<<" ";
        cout<<endl;
    }
}
#endif // SKY

ll find_maximum(int k, vector<vector<int>> xxx)
{
	n=xxx.size();
	m=xxx[0].size();
	for(int i=0;i<n;i++)
        for(int j=0;j<m;j++)
            cost.pb({xxx[i][j],{i,j}});
    sort(cost.begin(),cost.end());
    vector<vector<int>>kq;
    kq.resize(n,vector<int>(m,-1));
    ll res=0;
    int cnt=n*k/2;
    while(cnt>0)
    {
        iii cc=cost.back();
        cost.pop_back();
        if(f[cc.sc.fs]<k)
        {
            f[cc.sc.fs]++;
            cnt--;
            lis[cc.sc.fs][1].pb(cc.sc.sc);
            res+=cc.fs;
        }
    }
   // cout<<cost.size()<<endl;
    //return res;
    cnt=n*k/2;
    while(cnt>0)
    {
        iii cc=cost.front();
        cost.pop_front();
        if(f[cc.sc.fs]<k)
        {
            f[cc.sc.fs]++;
            cnt--;
            lis[cc.sc.fs][0].pb(cc.sc.sc);
            res-=cc.fs;
        }
    }

   // return 1;
    for(int t=0;t<k;t++)
    {
        times++;
        vector<int>tmp(2,n/2);
        for(int i=0;i<n;i++)
            if(ktr[i]!=times&&lis[i][1].empty())
            {
                ktr[i]=times;
                tmp[0]--;
                kq[i][lis[i][0].back()]=t;
                lis[i][0].pop_back();
            }
        for(int i=0;i<n;i++)
            if(ktr[i]!=times&&lis[i][0].empty())
            {
                ktr[i]=times;
                tmp[1]--;
                kq[i][lis[i][1].back()]=t;
                lis[i][1].pop_back();
            }
        for(int i=0;i<n;i++)
            if(ktr[i]!=times&&tmp[0]>0&&!lis[i][0].empty())
            {
                ktr[i]=times;
                tmp[0]--;
                kq[i][lis[i][0].back()]=t;
                lis[i][0].pop_back();
            }
        for(int i=0;i<n;i++)
            if(ktr[i]!=times&&tmp[1]>0&&!lis[i][1].empty())
            {
                ktr[i]=times;
                tmp[1]--;
                kq[i][lis[i][1].back()]=t;
                lis[i][1].pop_back();
            }
        // cout<<t<<endl; for(int i=0;i<n;i++)cout<<lis[i][0].size()<<" "<<lis[i][1].size()<<endl;
    }
    allocate_tickets(kq);
    return res;
}

#ifdef SKY
int main()
{
    freopen("A.inp","r",stdin);
    freopen("A.out","w",stdout);
    ios::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
    int n,m,k;
    cin>>n>>m>>k;
    vector<vector<int>>x;
    x.resize(n,vector<int>(m,0));
    for(int i=0;i<n;i++)
        for(int j=0;j<m;j++)
            cin>>x[i][j];
    cout<<find_maximum(k,x);
    return 0;
}
#endif

• Subtask 1: 11 / 11
• Subtask 2: 0 / 16
• Subtask 3: 0 / 14
• Subtask 4: 14 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23
• Subtask 7: 0 / 10