Submission #1246029

#	Time	Username	Problem	Language	Result	Execution time	Memory
1246029		nvc2k8	도서관 (JOI18_library)	C++20	100 / 100	122 ms	428 KiB

library

#include <bits/stdc++.h>
#define TASK "kajsdkjd"
#include "library.h"
#define endl '\n'
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define BIT(i,x) (((i)>>(x))&1)
#define FOR(i,a,b) for(int i = (a); i<=(b); i++)
#define FORD(i,a,b) for(int i = (a); i>=(b); i--)
#define all(C) C.begin(), C.end()
using namespace std;
using ll = long long;
using pii = pair<int,int>;
const int INT_LIM = 2147483647;
const ll LL_LIM = 9223372036854775807;
template <typename X> bool minimize(X &x, const X &y) {if (x>y){x = y; return true;}return false;}
template <typename X> bool maximize(X &x, const X &y) {if (x<y){x = y; return true;}return false;}
///------------------------------------------///

vector<int> candidate;
vector<int> ans;

void eraseVal(int val)
{
    stack<int> tmp;
    while (candidate.back()!=val)
    {
        tmp.push(candidate.back());
        candidate.pop_back();
    }
    candidate.pop_back();
    while (!tmp.empty())
    {
        candidate.pb(tmp.top());
        tmp.pop();
    }
}

void Solve(int N)
{
    if (N==1)
    {
        vector<int> ISWEARITESTEDTHIS;
        ISWEARITESTEDTHIS.pb(1);
        Answer(ISWEARITESTEDTHIS);
        return;
    }
    ans.clear();
    vector<int> ask;
    FOR(i, 1, N)
    {
        ask.pb(1);
        candidate.pb(i);
    }

    FOR(i, 1, N)
    {
        ask[i-1] = 0;
        if (Query(ask)==1)
        {
            ans.pb(i); break;
        }
        ask[i-1] = 1;
    }

    eraseVal(ans[0]);

    FOR(i, 2, N)
    {
        int l = 0, r = candidate.size()-1, ret = -1;
        while (l<=r)
        {
            fill(all(ask), 0);
            int mid = (l+r)>>1;
            FOR(t, 0, mid) ask[candidate[t]-1] = 1;
            int v1 = Query(ask), v2;
            for (auto t:ans) ask[t-1] = 1;
            v2 = Query(ask);

            if (v1==v2)
            {
                ret = mid;
                r = mid-1;
            }
            else l = mid+1;
//            cerr << mid << ' ' << v1 << ' ' << v2 << endl;
        }
//        cerr << endl;
//        for (auto i:candidate) cerr << i << ' ' ;
//        cerr << endl;
        ans.pb(candidate[ret]);
        eraseVal(candidate[ret]);
    }

//    for (auto i:ans) cerr << i << ' ';

    Answer(ans);
}

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