Submission #162474

#	Time	Username	Problem	Language	Result	Execution time	Memory
162474		abacaba	Combo (IOI18_combo)	C++14	0 / 100	2 ms	200 KiB

combo

#include <iostream>
#include <string>
#include <unordered_map>
#include <cstring>
#include <chrono>
#include <vector>
#include <map>
#include <random>
#include <set>
#include <algorithm>
#include <math.h>
#include <cstdio>
#include <stdio.h>
#include <queue>
#include <bitset>
#include <cstdlib>
#include <deque>
#include <cassert>
#include <stack>
#include "combo.h"
using namespace std;
 
#define max3(a, b, c) max(a, max(b, c))
#define min3(a, b, c) min(a, min(b, c))
#define mp make_pair
#define f first
#define se second
#define pb push_back
#define ppb pop_back
#define ll long long
#define y1 abcde
#define ull unsigned long long
#define cntbit(x) __builtin_popcount(x)
#define endl '\n'
#define uset unordered_set
#define umap unordered_map
#define pii pair<int, int>
#define ld long double
#define pll pair<long long, long long>

string seq[4] = {"A", "B", "X", "Y"};
int n, let1 = 3;

string guess_sequence(int N) {
    for(int i = 0; i < 3; ++i)
        if(press(seq[i])) {
            let1 = i;
            break;
        }
    string s = seq[let1];
    swap(seq[3], seq[let1]);
    for(int i = 1; i < N; ++i) {
        string now;
        now += s + seq[0];
        for(int j = 1; j < 3; ++j)
            now += s + seq[1] + seq[j];
        int p = press(now);
        if(p == s.size())
            s += seq[2];
        else if(p == s.size() + 1)
            s += seq[0];
        else
            s += seq[1];
    }
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:58:14: 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(p == s.size())
      |            ~~^~~~~~~~~~~
combo.cpp:60:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |         else if(p == s.size() + 1)
      |                 ~~^~~~~~~~~~~~~~~

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