Submission #301205

#	Time	Username	Problem	Language	Result	Execution time	Memory
301205		naderjemel	Carnival Tickets (IOI20_tickets)	C++14	16 / 100	909 ms	54596 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>

using namespace std;

long long find_maximum(int k, vector<vector<int>> x) {
	int n = x.size();
	int m = x[0].size();
	vector<vector<int>> answer;
	answer.resize(n,vector<int>());
	long long s=0;
	if(m==1){
        vector<int> nums;
        for (int i = 0; i < n; i++) {
            vector<int> row(m);
            for (int j = 0; j < m; j++) {
                row[j] = j;
                nums.push_back(x[i][j]);
            }
            answer.push_back(row);
        }
        sort(nums.begin(),nums.end());
        for(int i=0;i<n;i++){
            if(i<n/2) s-=nums[i];
            else s+=nums[i];
        }
	}
	else if(k==1){
        for(int i=0;i<n;i++) for(int j = 0; j < m; j++) answer[i].push_back(-1);
	    vector<pair<int,int>> mini;
	    for(int i=0;i<n;i++) mini.push_back({x[i][m-1]+x[i][0],i});
	    sort(mini.begin(),mini.end());
	    for(int i=0;i<n;i++){
	        if(i<n/2){
	            s-=x[mini[i].second][0];
                answer[mini[i].second][0]=0;
	        }
	        else{
                s+=x[mini[i].second][m-1];
                answer[mini[i].second][m-1]=0;
	        }
	    }
	}
	allocate_tickets(answer);
	return s;
}

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