Submission #625161

#	Time	Username	Problem	Language	Result	Execution time	Memory
625161		Mr_Husanboy	Combo (IOI18_combo)	C++14	5 / 100	231 ms	220 KiB

combo

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

using namespace std;

string guess_sequence(int N) {
    string p = "";
    string let = "ABXY";
    map<char,int> used;
    int n = N;
    int last = 0;
    while(p.size() < n){
        random_shuffle(let.begin(), let.end());
        for(auto u : let){
            if(used[u]) continue;
            while(p.size() < n) p.push_back(u);
            int k = press(p);
           // cout << p << ' ' << k << ' ' << last << endl;
            if(k == n) break;
            if(k > last){
                used[u] = 1;

            }
            while(p.size() > k) p.pop_back();
            last = p.size();

        }

    }
  //  cout << p << endl;
    return p;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:12:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   12 |     while(p.size() < n){
      |           ~~~~~~~~~^~~
combo.cpp:16:28: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   16 |             while(p.size() < n) p.push_back(u);
      |                   ~~~~~~~~~^~~
combo.cpp:24:28: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   24 |             while(p.size() > k) p.pop_back();
      |                   ~~~~~~~~~^~~

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