Submission #67301

#	Time	Username	Problem	Language	Result	Execution time	Memory
67301		hamzqq9	Hidden Sequence (info1cup18_hidden)	C++14	100 / 100	11 ms	564 KiB

hidden

#include<bits/stdc++.h>
#include "grader.h"
#define st first
#define nd second
#define pb push_back
#define ppb pop_back
#define umax(x,y) x=max(x,y)
#define umin(x,y) x=min(x,y)
#define ll long long
#define ii pair<int,int>
#define iii pair<int,ii>
#define sz(x) ((int) x.size())
#define orta ((bas+son)>>1)
#define all(x) x.begin(),x.end()
#define dbgs(x) cerr<<(#x)<<" --> "<<(x)<<" "
#define dbg(x) cerr<<(#x)<<" --> "<<(x)<<endl;getchar()
#define pw(x) (1<<(x))
#define inf 2000000000
#define MOD 1000000007
#define MAX 10000006
#define LOG 22
using namespace std;

int MXQ;

bool query(vector<int> res) {

	return isSubsequence(res);

}

int f1(int N) {

	for(int i=1;i<=N;i++) {

		vector<int> que;

		if(i>MXQ) {

			for(int j=0;j<N-i;j++) que.pb(0);

			bool res=query(que);

			if(res==true) return i-1;

		}
		else {

			for(int j=0;j<i;j++) que.pb(1);

			bool res=query(que);

			if(res==false) return i-1;

		}

	}

	return N;

}

vector < int > findSequence (int N) {

	MXQ=N/2+1;

	int h1=f1(N);
	int h0=N-h1;
	int p1=0;
	int p0=0;

	vector<int> ans;

	for(int i=0;i<N;i++) {

		// is it 1

		vector<int> que;

		if(p1+1+h0<=MXQ) {

			for(int j=0;j<p1+1;j++) que.pb(1);

			for(int j=0;j<h0;j++) que.pb(0);

			bool res=query(que);

			if(res) {

				p1++;
				h1--;

				ans.pb(1);

			}
			else {

				p0++;
				h0--;

				ans.pb(0);

			}

		}
		else {

			for(int j=0;j<p0+1;j++) que.pb(0);

			for(int j=0;j<h1;j++) que.pb(1);

			bool res=query(que);

			if(res) {

				p0++;
				h0--;

				ans.pb(0);

			}
			else {

				p1++;
				h1--;

				ans.pb(1);
			
			}

		}

	}

	return ans;

}

Compilation message (stderr)

grader.cpp: In function 'int main()':
grader.cpp:28:43: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
     fprintf (fifo_out, "%d\n", ans.size ());
                                ~~~~~~~~~~~^
grader.cpp:29:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0; i<ans.size () && i < N; i++)
                   ~^~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 80 / 80