Submission #298626

#	Time	Username	Problem	Language	Result	Execution time	Memory
298626		AmineTrabelsi	Combo (IOI18_combo)	C++14	10 / 100	59 ms	576 KiB

combo

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define v(x) vector<x>
#define pb push_back 
#define mp make_pair
const ll maxint=2e18;
const ll minint =-2e18;
/*
(͡ ° ͜ʖ ͡ °): Hi, be careful of overflow.
*/


int press(string p);
/*
// comment out when submitting
int press(string p){
	cout<<p<<endl;
	int x;
	cin>>x;
	return x;
}
*/
string let[4]={"A","B","X","Y"};

string guess_sequence(int N){
	string res ="";
	int avoid = 0;
	for(int j=0;j<4;j++){
		int x = press((res+let[j]));
		if(x == 1){
			res+=let[j];
			avoid = j;
			break;
		}
	}
	vector<string> lett;
	for(int i=0;i<4;i++)if(i!=avoid)lett.push_back(let[i]);
	for(int i=1;i<N;i++){
		string t=res+lett[0]+res+lett[1];
		int x = press(t);
		if(x == i+1){
			x = press(res+lett[0]);
			if(x == i+1){
				res+=lett[0];
			}else res+=lett[1];
		}else{
			res += lett[2];
		}
	}
	return res;	
}
//* Notes: 
//* the first character of S never reappears in it

/*

// comment out when submitting
int main(){
	int n;
	cin>>n;
	cout<<guess_sequence(n)<<'\n';
	return 0;
}
*/

• Subtask 1: 5 / 5
• Subtask 2: 5 / 95