Submission #670673

#	Time	Username	Problem	Language	Result	Execution time	Memory
670673		Essa2006	Combo (IOI18_combo)	C++14	0 / 100	1 ms	208 KiB

combo

#include<bits/stdc++.h>
#include "combo.h"
using namespace std;
#define ll long long 
#define endl '\n'
#define FF first
#define SS second
#define all(a) a.begin(), a.end()
#define mod (ll)(1000000007)

string ans="";
string guess_sequence(int n){
    string a="ABXY";
    char c;
    for(int i=0;i<4;i++){
        string k=""+a[i];
        if(press(k)){
            ans.push_back(a[i]);
            c=a[i];
        }
    }
    string b=a;
    a="";
    for(int i=0;i<4;i++){
        if(b[i]!=c)
            a.push_back(b[i]);
    }
    for(int i=1;i<n;i++){
        for(int j=0;j<3;j++){
            string k=ans+a[j];
            if(press(k)==i+1){
                ans.push_back(a[j]);
                break;
            }
        }
    }
    return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:25:9: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
   25 |         if(b[i]!=c)
      |         ^~

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