Submission #448722

#	Time	Username	Problem	Language	Result	Execution time	Memory
448722		kimjg1119	Chameleon's Love (JOI20_chameleon)	C++17	4 / 100	31 ms	312 KiB

chameleon

#include "chameleon.h"
#include <bits/stdc++.h>

using namespace std;

int N;
vector<int> chk(1010);

void f(int x){
	int left = 0;
	for(int i=1;i<=N*2;i++) if(!chk[i]) left++;
	auto mchk = chk;
	
	while(left >= 2){
		int mid = left / 2;
		vector<int> v;
		for(int i=1;i<=N*2;i++){
			if(!mchk[i]) v.push_back(i);
			if(v.size() == mid) break;
		}
		
		int ret1 = Query(v);
		v.push_back(x);
		int ret2 = Query(v);
		
		if(ret1 == ret2){
			int cnt = 0;
			for(int i=1;i<=N*2;i++){
				if(mchk[i]) continue;
				if(cnt < mid) cnt++;
				else mchk[i] = 1;
			}
			left = mid;
		}
		else{
			int cnt = 0;
			for(int i=1;i<=N*2;i++){
				if(mchk[i]) continue;
				cnt++; mchk[i] = 1;
				if(cnt == mid) break;
			}
			left = left - mid;
		}
	}
	
	for(int i=1;i<=N*2;i++){
		if(!mchk[i]){
			Answer(x, i);
			chk[i] = 1;
			break;
		}
	}
}

void Solve(int n){
	N = n;
	for(int i = 1; i <= N * 2; i++){
		if(chk[i]) continue;
		chk[i] = 1;
		f(i);
	}
}

Compilation message (stderr)

chameleon.cpp: In function 'void f(int)':
chameleon.cpp:19:16: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   19 |    if(v.size() == mid) break;
      |       ~~~~~~~~~^~~~~~

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