Submission #315042

#	Time	Username	Problem	Language	Result	Execution time	Memory
315042		thtsshz_bgwrswh	CONSUL (info1cup19_consul)	C++17	100 / 100	45 ms	384 KiB

consul

#pragma GCC optimize("Ofast")
#include "grader.h"
#include<algorithm>
#include<random>
#include<vector>
#include<utility>
#include<map>
using namespace std;
int order[1005];
map<int,int> m;
vector<pair<int,int>> q;
void solve(int n){
	int i;
	for(i=1;i<=n;i++)
		order[i]=i;
	random_shuffle(order+1,order+n+1);
	m.clear();
	for(i=1;i<=25;i++)
		m[kth(order[i])]++;	
	q.clear();
	for(auto x:m)
		q.emplace_back(x.second,x.first);
	sort(q.begin(),q.end());
	reverse(q.begin(),q.end());
	if(n<=50){
		int ans=0,v;
		for(i=0;i<25&&i<(int)q.size();i++){
			int temp=cnt(q[i].second);
			if(temp>ans){
				ans=temp;
				v=q[i].second;
			}
		}
		if(ans>n/3)
			say_answer(v);
		else
			say_answer(-1);
	}
	else{
		int ans=0,v;
		for(i=0;i<35&&i<(int)q.size();i++){
			int temp=cnt(q[i].second);
			if(temp>ans){
				ans=temp;
				v=q[i].second;
			}
		}
		if(ans>n/3)
			say_answer(v);
		else
			say_answer(-1);
	}
}

Compilation message (stderr)

consul.cpp: In function 'void solve(int)':
consul.cpp:49:14: warning: 'v' may be used uninitialized in this function [-Wmaybe-uninitialized]
   49 |    say_answer(v);
      |    ~~~~~~~~~~^~~
consul.cpp:35:14: warning: 'v' may be used uninitialized in this function [-Wmaybe-uninitialized]
   35 |    say_answer(v);
      |    ~~~~~~~~~~^~~

• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 65 / 65