Submission #392361

#	Time	Username	Problem	Language	Result	Execution time	Memory
392361		Urvuk3	Combo (IOI18_combo)	C++17	10 / 100	83 ms	444 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
using namespace std;
#define REP(i, n) for (int i = 0; i < (n); i++)

const int M = 4;
const char LET[] = "ABXY";

string guess_sequence(int N) {
  string s;

  REP(i, N) {
    REP(j, M-1) {
      int len = press(s + LET[j]);
      if (len == i+1) {
        s += LET[j];
        break;
      }
    }
    if (s.size() != i+1) {
      s += LET[M-1];
    }
  }

  return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:20:18: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if (s.size() != i+1) {
      |         ~~~~~~~~~^~~~~~

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