Submission #47838

#	Time	Username	Problem	Language	Result	Execution time	Memory
47838		Inovak	Library (JOI18_library)	C++14	19 / 100	554 ms	580 KiB

library

#include <bits/stdc++.h>
#include "library.h"
//#include "grader.cpp"

#define fr first
#define sc second
#define pb push_back
#define mk make_pair
#define ll long long
#define OK puts("OK")
#define sz(s) (int)s.size()
#define all(s) s.begin(), s.end()

using namespace std;

bool u[3000];

void Solve(int n)
{
	vector<int> M(n);
    deque <int> dq;
    dq.pb(1);
    u[0] = 1;
    M[0] = 1;
    int ans = -1, anb = -1;

    for(int i = 0; i < n; i++) {
        if(u[i]) continue;
        M[i] = 1;
        int A = Query(M);
        if(A == 1 && ans == -1) ans = i;
        else if(A == 1) anb = i;
        M[i] = 0;
    }
    M[0] = 0;
    if(n > 1) {
        u[ans] = 1;
        dq.pb(ans + 1);
    }

    while(dq.size() < n) {
        M[ans] = 1;
        int an = -1;
        for(int i = 0; i < n; i++) {
            if(u[i]) continue;
            M[i] = 1;
            int A = Query(M);
            M[i] = 0;
            if(A == 1) an = i;
        }
        M[ans] = 0;
        if(an == -1) break;
        u[an] = 1;
        ans = an;
        dq.pb(ans + 1);
    }
    if(dq.size() < n) {
        ans = anb;
        u[ans] = 1;
        dq.push_front(ans + 1);

        while(dq.size() < n) {
            M[ans] = 1;
            int an = -1;
            for(int i = 0; i < n; i++) {
                if(u[i]) continue;
                M[i] = 1;
                int A = Query(M);
                M[i] = 0;
                if(A == 1) an = i;
            }
            M[ans] = 0;
            if(an == -1) break;
            u[an] = 1;
            ans = an;
            dq.push_front(ans + 1);
        }
    }
    vector <int> res;
    while(!dq.empty())
        res.pb(dq.front()), dq.pop_front();
    Answer(res);
}
/**
5
4 2 5 3 1
**/

Compilation message (stderr)

library.cpp: In function 'void Solve(int)':
library.cpp:41:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(dq.size() < n) {
           ~~~~~~~~~~^~~
library.cpp:57:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(dq.size() < n) {
        ~~~~~~~~~~^~~
library.cpp:62:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while(dq.size() < n) {
               ~~~~~~~~~~^~~

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