Submission #620516

#	Time	Username	Problem	Language	Result	Execution time	Memory
620516		kshitij_sodani	Minerals (JOI19_minerals)	C++14	90 / 100	90 ms	5924 KiB

minerals

//#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second
#define endl '\n'
 
#include "minerals.h"
vector<pair<int,int>> ans;
int cur=0;
set<int> xx;
mt19937 rng;
void solve(vector<int> aa,vector<int> bb,int y=0){
	/*for(auto j:aa){
		cout<<j<<".";
	}
	cout<<endl;
	for(auto j:bb){
		cout<<j<<".";
	}
	cout<<endl;*/
	if(aa.size()==1){
		//cout<<aa[0]<<":"<<bb[0]<<endl;
		ans.pb({aa[0],bb[0]});
		return;
	}
	//int cur=0;
	vector<int> cc;
	vector<int> dd;
	vector<int> ee;
	vector<int> ff;
	int x=aa.size()/2;
	if(aa.size()>4){
		x+=(aa.size()*4)/38;
	}
/*	if(aa.size()>64){
		x+=10;
	}
	else if(aa.size()>
	else if(aa.size()>16){
		x+=4;
	}
	else if(aa.size()>8){
		x+=2;//=2;
	}
	else if(aa.size()>2){
		x++;
	}*/
	for(int i=0;i<aa.size();i++){
		if(i<x){
			dd.pb(aa[i]);
			continue;
		}
		cur=Query(aa[i]);
		xx.insert(aa[i]);
		cc.pb(aa[i]);
	}
	for(int i=0;i+1<bb.size();i++){
		int cur2=Query(bb[i]);
	/*	if(bb.size()==4){
			cout<<cur<<","<<cur2<<","<<bb[i]<<endl;
		}*/	
		if(y==0 and cur2==cur){
			ee.pb(bb[i]);
			continue;
		}
		else if(y==1 and cur2!=cur){
			cur=cur2;
			ee.pb(bb[i]);
			continue;
		}
		//Query(bb[i]);
		cur=cur2;
		ff.pb(bb[i]);
	}
	if(ee.size()<cc.size()){
		ee.pb(bb.back());
	}
	else{
		ff.pb(bb.back());
	}
	/*for(auto j:cc){
		cur=Query(j);
	}*/
	/*for(auto j:cc){
		cout<<j<<",";
	}
	cout<<endl;
	for(auto j:ee){
		cout<<j<<",";
	}
	cout<<endl<<endl;;*/
	solve(cc,ee,y^1);
	solve(dd,ff,y);
}
void Solve(int n) {
	vector<int> aa;
	vector<int> bb;
	int cur5=0;
	for(int i=1;i<=2*n;i++){
		int cur2=Query(i);
		if(cur2>cur5){
			aa.pb(i);
			cur5=cur2;
			continue;
		}
		bb.pb(i);
		//Query(i);
	}
/*	for(auto j:aa){
		Query(j);
	}
*/ 
	solve(aa,bb,1);
 
  	for (int i=0; i<n;i++) {
    	Answer(ans[i].a,ans[i].b);
  	}
}

Compilation message (stderr)

minerals.cpp: In function 'void solve(std::vector<int>, std::vector<int>, int)':
minerals.cpp:52:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |  for(int i=0;i<aa.size();i++){
      |              ~^~~~~~~~~~
minerals.cpp:61:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |  for(int i=0;i+1<bb.size();i++){
      |              ~~~^~~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
• Subtask 4: 30 / 30
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
• Subtask 7: 5 / 5
• Subtask 8: 5 / 5
• Subtask 9: 0 / 10