Submission #104535

#	Time	Username	Problem	Language	Result	Execution time	Memory
104535		mohammad	Combo (IOI18_combo)	C++14	100 / 100	41 ms	692 KiB

combo

/*
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*/

#include "iostream"
#include "vector"
#include "map"
#include "math.h"
#include "string"
#include "algorithm"
#include "set"
#include <iterator>
#include <string.h>
#include <queue>
#include <list>
#include "combo.h"

using namespace std;

typedef long long ll ;
const ll M = 1e9 + 7 ;
const ll oo = 1e13 ;


int head , len=1;

void start();
void end(int N);
string c="ABXY",S,id;
vector<string>h[4]; 
string generate_press(){
    return S+id[0]+S+id[1]+id[0]+
    S+id[1]+id[1]+S+id[1]+id[2]; 
}
string guess_sequence(int N){
    start();
    while(len<N-1){
        int opt = press(generate_press()) - len;
        S+=id[(opt+2)%3];++len;
    }
    if (len==N-1) end(N);
    return S;
}
void start(){
    S=id="";
    if (press("AB")){
        if (press("A")) S+=c[head=0];
        else S+=c[head=1];
    }
    else{
        if (press("X")) S+=c[head=2];
        else S+=c[head=3];
    }
    for (int i=0;i<4;++i)
        if (i!=head) id+=c[i];
}
void end(int N){
    if (press((S+id[0]+S+id[1]))==N){
        if (press((S+id[0]))==N) S+=id[0];
        else S+=id[1];
    }
    else S+=id[2];
}

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