Submission #1072346

#	Time	Username	Problem	Language	Result	Execution time	Memory
1072346		LCJLY	Carnival Tickets (IOI20_tickets)	C++14	0 / 100	1 ms	384 KiB

tickets

#include <bits/stdc++.h>
#include "tickets.h"
//#include "grader.cpp"
using namespace std;

#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cout << it << " "; cout << #x << endl;
typedef pair<int,int>pii;
typedef pair<int,pii>pi2;

//allocate_tickets(vector<vector<int>>)

long long find_maximum(int k, vector<vector<int>>arr){
	int n = arr.size();
	int m = arr[0].size();
	set<pair<long long,pii>>se;
	for(int x=0;x<n;x++){
		for(int y=0;y<m;y++){
			se.insert({arr[x][y],{x,y}});
		}	
	}
	//k==1
	vector<vector<int>>ans;
	ans.resize(n);
	for(int x=0;x<n;x++){
		ans[x]=vector<int>(m,-1);
	}
	vector<long long>v;
	bool done[n+5];
	memset(done,0,sizeof(done));
	for(int x=0;x<n/2;x++){
		auto it=se.begin();
		auto it2=prev(se.end());
		pi2 hold=*it;
		pi2 hold2=*it2;
		if(hold.second.first==hold2.second.first){
			//same color
			while(it->second.first==hold.second.first) it++;
			while(it2->second.first==hold.second.first) it2--;
			if(abs(it->first-hold.first)<=abs(it2->first-hold2.first)){
				hold=*it;
			}
			else{
				hold2=*it2;
			}
		}
		for(int y=0;y<m;y++){
			se.erase({arr[hold.second.first][y],{hold.second.first,y}});
			se.erase({arr[hold2.second.first][y],{hold2.second.first,y}});
		}
		ans[hold.second.first][hold.second.second]=0;
		ans[hold2.second.first][hold2.second.second]=0;
		v.push_back(hold.first);
		v.push_back(hold2.first);
	}
	long long counter=0;
	for(int y=0;y<n;y++){
		counter+=abs(v[y]-v[n/2]);
	}
	allocate_tickets(ans);
	return counter;
}

• Subtask 1: 0 / 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