Submission #769289

#	Time	Username	Problem	Language	Result	Execution time	Memory
769289		Mery2005	Combo (IOI18_combo)	C++14	5 / 100	1 ms	208 KiB

combo

#include "combo.h"
#include <iostream>
#include <algorithm>
#include <queue>
#include <cmath>
#include <vector>
#include <list>
#include <string>
#include <unordered_map>
#include <map>
#include <set>
#include <stack>
#include <string>
#include <iomanip>
#include <fstream>
 
using namespace std;

void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
}

const long long mod = 1e9+7;
const int N = 3e6+5;
int a[N] , dp[N];

string guess_sequence(int N){
  string t;
  char x[4];
  if(press("A")){
    t = "A";
    x[0] = 'B';
    x[1] = 'X';
    x[2] = 'Y';
  }
  if(press("B")){
    t = "B";
    x[0] = 'A';
    x[1] = 'X';
    x[2] = 'Y';
  }
  if(press("X")){
    t = "X";
    x[0] = 'B';
    x[1] = 'A';
    x[2] = 'Y';
  }
  if(press("Y")){
    t = "Y";
    x[0] = 'B';
    x[1] = 'X';
    x[2] = 'A';
  }
  string s = t;
  for(int i = 0 ; i < (N - 2) ; i++){
    int ans = press(s + x[0] + x[0] + s + x[0] + x[1] + s + x[0] + x[2] + s + x[1] + s);
    if(ans == s.size()){
      s += x[2];
    }
    else if(ans == (s.size() + 1)){
      s += x[1];
    }
    else{
      s += x[0];
    }
  }
  int num = press(s + x[0] + s + x[1]);
  if (num == N){
    num = press(s + x[0]);
    if (num == N){
      return (s + x[0]);
    } 
    else{
      return (s + x[1]);
    }
  } 
  else{
    return (s + x[2]);
  }
}

// int main() {
  
//     return 0;
// } 

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:58:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |     if(ans == s.size()){
      |        ~~~~^~~~~~~~~~~
combo.cpp:61:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |     else if(ans == (s.size() + 1)){
      |             ~~~~^~~~~~~~~~~~~~~~~

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