Submission #1044683

#	Time	Username	Problem	Language	Result	Execution time	Memory
1044683		cpdreamer	Carnival Tickets (IOI20_tickets)	C++17	11 / 100	1 ms	856 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
#define V vector
#define S second
#define F first
#define pb push_back
#define P pair
#define all(v) v.begin(),v.end()
typedef long long ll;

long long find_maximum(int k, std::vector<std::vector<int>> x) {
    int N=x.size();
    int M=x[0].size();
    V<P<int,P<int,int>>>vp;
    for(int i=0;i<N;i++){
        for(int j=0;j<M;j++){
            vp.pb({x[i][j],{i,j}});
        }
    }
    sort(all(vp));
    int size=vp.size();
    ll ans=0;
    for(int i=0;i<(N*M)/2;i++){
        ans-=vp[i].F;
    }
    V<V<int>>D(N,V<int>(M,-1));
    for(int i=(N*M)/2;i<N*M;i++)
        ans+=vp[i].F;
    for(int i=1;i<=M;i++){
        for(int j=1;j<=N/2;j++){
            int id1=(i-1)*(N/2)+j-1;
            int id2=size-id1-1;
            D[vp[id1].S.F][vp[id1].S.S]=i-1;
            D[vp[id2].S.F][vp[id2].S.S]=i-1;
        }
    }
    allocate_tickets(D);
    return ans;

}

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