Submission #384965

#	Time	Username	Problem	Language	Result	Execution time	Memory
384965		Ahmadsm2005	Carnival Tickets (IOI20_tickets)	C++14	11 / 100	5 ms	876 KiB

tickets

#include <bits/stdc++.h>
//#include "grader.cpp"
#include "tickets.h"
using namespace std;
long long find_maximum(int k,vector<vector<int>> x) {
int n = x.size();
long long CNT=0;
int m = x[0].size();
vector<vector<int>>answer(n);
for(int i=0;i<n;i++)
for(int l=0;l<m;l++)
answer[i].push_back(-1);
set<pair<int,pair<int,int>>>lol;
set<int>VIS;
for(int i=0;i<n;i++){
for(int l=0;l<m;l++){
lol.insert({x[i][l],{i,l}});
}
}
int Z=0;
for(int i=0;i<k;i++){
vector<int>TEMP;
int N=n;
while(N){
auto itr=lol.end(),itr2=lol.begin();
itr--;
while(VIS.find((itr->second).first)!=VIS.end())
itr--;
VIS.insert((itr->second).first);
while(VIS.find((itr2->second).first)!=VIS.end())
itr2++;
TEMP.push_back((itr->first)),TEMP.push_back((itr2->first));
answer[(itr->second).first][(itr->second).second]=Z;
VIS.insert((itr2->second).first);
answer[(itr2->second).first][(itr2->second).second]=Z;
lol.erase(itr),lol.erase(itr2);
N-=2;
}
Z++;
sort(TEMP.begin(),TEMP.end());
int X=TEMP[(TEMP.size()-1)/2];
for(int i=0;i<TEMP.size();i++){
CNT+=abs(TEMP[i]-X);
}
VIS.clear();
}
allocate_tickets(answer);
return CNT;
}

Compilation message (stderr)

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:42:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 | for(int i=0;i<TEMP.size();i++){
      |             ~^~~~~~~~~~~~

• 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