Submission #1020932

#	Time	Username	Problem	Language	Result	Execution time	Memory
1020932		vako_p	Library (JOI18_library)	C++14	0 / 100	30 ms	344 KiB

library

#include <cstdio>
#include <vector>
#include "library.h"
#define pb push_back
#define ll int

using namespace std;
ll n;
vector<ll> v,v1,ans;

bool ok(ll mid, ll idx){		
	for(int i = 0; i < n; i++) v[i] = 0;
	for(int i = 0; i <= mid; i++) v[v1[i] - 1] = 1;
	ll x = Query(v);
	v[ans[idx] - 1] = 1;
	x -= Query(v);
	return (!x);
}

void Solve(int N){
	n = N;
	v.assign(n, 0LL);
	ans.assign(n, 0LL);
	for(int i = 1; i <= n; i++) v1.pb(i);
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			v[j] = (j != i);
		}
		ll x = Query(v);
		if(x == 1){
			ans[0] = i + 1;
			v1.erase(v1.begin() + i); 
			break;
		}
	}
	for(int i = 1; i < n; i++){
		ll l = -1, r = v1.size();
		while(r > l + 1){
			ll mid = l + (r - l) / 2;
			if(ok(mid, i - 1)) r = mid;
			else l = mid;
		}
		ans[i] = v1[r];
		v1.erase(v1.begin() + r);
	}
	Answer(ans);
}

• Subtask 1: 0 / 19
• Subtask 2: 0 / 81