How to solve this kind of problems??? - Codeforces

→ Pay attention

Before contest
Educational Codeforces Round 173 (Rated for Div. 2)
42:01:27
Register now »

→ Streams

CF Edu Round 173 Solution Discussion

By aryanc403

Before stream 44:11:26

View all →

→ Top rated

#	User	Rating
1	tourist	3985
2	jiangly	3814
3	jqdai0815	3682
4	Benq	3529
5	orzdevinwang	3526
6	ksun48	3517
7	Radewoosh	3410
8	hos.lyric	3399
9	ecnerwala	3392
9	Um_nik	3392

Countries | Cities | Organizations

→ Top contributors

#	User	Contrib.
1	cry	169
2	maomao90	162
2	Um_nik	162
4	atcoder_official	161
5	djm03178	158
6	-is-this-fft-	157
7	adamant	155
8	awoo	154
8	Dominater069	154
10	luogu_official	150

View all →

→ Find user

→ Recent actions

Detailed →

How to solve this kind of problems???

Revision en1, by MahmytM, 2024-06-12 18:52:53

Today I tried to solve

this problem

I wrote this

code

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second
#define pb push_back
string guess_sequance(int n){
	string ans="";
	for(int i=1;i<=n;i++){
		int z=press(ans+'A');
		int k=ans.size();
		if(z==k+1){
			ans+='A';
			continue;
		}
		z=press(ans+'B');
		if(z==k+1){
			ans+='B';
			continue;
		}
		z=press(ans+'X');
		if(z==k+1){
			ans+='X';
			continue;
		}
		z=press(ans+'Y');
		if(z==k+1){
			ans+='Y';
			continue;
		}
	}
	return ans;
}

But it says compilation error.What do I need to do??? Help please! I thought right code is 5th from below!

History

Revisions

	Rev.	Lang.	By	When	Δ	Comment
	en6		MahmytM	2024-06-13 12:09:11	20	Tiny change: 'tdc++.h>\n#include "combo.h"\nusing na' -> 'tdc++.h>\nusing na'
	en5		MahmytM	2024-06-13 06:56:27	20	Tiny change: 'tdc++.h>\nusing na' -> 'tdc++.h>\n#include "combo.h"\nusing na'
	en4		MahmytM	2024-06-12 19:38:00	4
	en3		MahmytM	2024-06-12 19:31:55	41	Tiny change: 'lp please!\nI thought right code is 5th from below!' -> 'lp please!'
	en2		MahmytM	2024-06-12 19:26:59	2	Tiny change: 'guess_sequance(int n)' -> 'guess_sequence(int n)'
	en1		MahmytM	2024-06-12 18:52:53	895	Initial revision (published)