Submission #1085533

#	Time	Username	Problem	Language	Result	Execution time	Memory
1085533		vako_p	Chameleon's Love (JOI20_chameleon)	C++14	4 / 100	12 ms	600 KiB

chameleon

#include <bits/stdc++.h>
#include "chameleon.h"
using namespace std;
#define ll int
#define pb push_back

ll n; 
vector<ll> v1,v2;
vector<pair<ll,ll>> ans;

void Solve(int N){
	n = N;
	v1.pb(1);
	for(int i = 2; i <= 2 * n; i++){
		v1.pb(i);
		if(Query(v1) != v1.size()){
			ll l = 0, r = v1.size() - 1;
			while(r > l + 1){
				v2.clear();
				ll mid = l + (r - l) / 2;
				for(int j = mid; j < v1.size(); j++) v2.pb(v1[j]);
				if(Query(v2) != v2.size()) l = mid;
				else r = mid;
			}
			ans.pb({i, v1[l]});
			v1.pop_back();
			v1.erase(v1.begin() + l);
		}
	}	
//	cout << ans.size() << endl;
// 	for(auto it : ans) cout << it.first << ' ' << it.second << '\n';
 	for(auto it : ans) Answer(it.first, it.second);
}

Compilation message (stderr)

chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:16:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |   if(Query(v1) != v1.size()){
      |      ~~~~~~~~~~^~~~~~~~~~~~
chameleon.cpp:21:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int j = mid; j < v1.size(); j++) v2.pb(v1[j]);
      |                      ~~^~~~~~~~~~~
chameleon.cpp:22:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     if(Query(v2) != v2.size()) l = mid;
      |        ~~~~~~~~~~^~~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36