Submission #958105

#	Time	Username	Problem	Language	Result	Execution time	Memory
958105		Pring	Combo (IOI18_combo)	C++17	100 / 100	14 ms	1988 KiB

combo

#include <bits/stdc++.h>
using namespace std;
#include "combo.h"

#ifdef MIKU
string dbmc = "\033[1;38;2;57;197;187m", dbrs = "\033[0m";
#define debug(x...) cout << dbmc << "[" << #x << "]: ", dout(x)
void dout() { cout << dbrs << endl; }
template <typename T, typename ...U>
void dout(T t, U ...u) { cout << t << (sizeof...(u) ? ", " : ""); dout(u...); }
#else
#define debug(...) 39
#endif

// #define int long long
#define fs first
#define sc second
#define mp make_pair
#define FOR(i, j, k) for (int i = j, Z = k; i < Z; i++)
typedef pair<int, int> pii;

namespace {

    char GET2(string p) {
        // if (press(p + 'A' + p + 'B') > p.size()) return (press(p + 'A') > p.size() ? 'A' : 'B');
        // return (press(p + 'X') > p.size() ? 'X' : 'Y');
        if (press("AB")) return (press("A") ? 'A' : 'B');
        return (press("X") ? 'X' : 'Y');
    }

    char GET3(string p, char disable) {
        char a = 'B', b = 'X', c = 'Y';
        if (disable == 'B') a = 'A';
        if (disable == 'X') b = 'A';
        if (disable == 'Y') c = 'A';
        if (press(p + a + p + b) > p.size()) return (press(p + a) > p.size() ? a : b);
        return c;
    }

    char GET(string p, char disable) {
        char a = 'B', b = 'X', c = 'Y';
        if (disable == 'B') a = 'A';
        if (disable == 'X') b = 'A';
        if (disable == 'Y') c = 'A';
        int x = press(p + a + a + p + a + b + p + a + c + p + b);
        if (x == p.size() + 2) return a;
        if (x == p.size() + 1) return b;
        return c;
    }
}

string guess_sequence(int n) {
    string ans = "";
    ans.push_back(GET2(ans));
    if (n == 1) return ans;
    FOR(i, 1, n - 1) ans.push_back(GET(ans, ans[0]));
    ans.push_back(GET3(ans, ans[0]));
    return ans;
}

Compilation message (stderr)

combo.cpp: In function 'char {anonymous}::GET3(std::string, char)':
combo.cpp:36:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         if (press(p + a + p + b) > p.size()) return (press(p + a) > p.size() ? a : b);
      |             ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
combo.cpp:36:67: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         if (press(p + a + p + b) > p.size()) return (press(p + a) > p.size() ? a : b);
      |                                                      ~~~~~~~~~~~~~^~~~~~~~~~
combo.cpp: In function 'char {anonymous}::GET(std::string, char)':
combo.cpp:46:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         if (x == p.size() + 2) return a;
      |             ~~^~~~~~~~~~~~~~~
combo.cpp:47:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         if (x == p.size() + 1) return b;
      |             ~~^~~~~~~~~~~~~~~

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