Submission #744892

#	Time	Username	Problem	Language	Result	Execution time	Memory
744892		teo_thrash	Combo (IOI18_combo)	C++14	5 / 100	1 ms	208 KiB

combo

#include<bits/stdc++.h>
#include "combo.h"

using namespace std;

string guess_sequence(int n) {
    string p="AB", a="ABXY";
    string S, curr;
    vector<char> let;

    if(!press("AB")){
        p="XY";
    }
    char c=p[0];
    if(!press(p.substr(0, 1))){
        c=p[1];
    }

    S+=c;

    for(int i=0; i<a.size(); i++){
        if(a[i]!=c){
            let.push_back(a[i]);
        }
    }

    int coins=0;
    for(int i=2; i<n; i++){
        curr=S+let[0]+let[0] + S+let[0]+let[1] + S+let[0]+let[2] + S+let[1];

        coins=press(curr);
        if(coins==i+1){
            S+=let[0];
        }else{
            if(coins==i){
                S+=let[1];
            }else{
                S+=let[2];
            }
        }
    }

    if(press(S+let[0])==n){
        S+=let[0];
    }else{
        if(press(S+let[1])==n){
            S+=let[1];
        }else{
            S+=let[2];
        }
    }


    return S;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:21:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int i=0; i<a.size(); i++){
      |                  ~^~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95