Submission #1012871

#	Time	Username	Problem	Language	Result	Execution time	Memory
1012871		rythm_of_knight	Combo (IOI18_combo)	C++14	5 / 100	6 ms	600 KiB

combo

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

using namespace std;

string guess_sequence(int n) {
	string print;
	int x;
    char c;
    vector <string> a(n, "ABXY");
    string ans(n, 'C'), pos = "ABXY";
    string tayyor;
    x = press("AB");
    if (x) {
		x = press("A");
        if (x)
            c = 'A';
        else
            c = 'B';
    } else {
        x = press("X");
        if (x)
            c = 'X';
        else
            c = 'Y';
    }
    tayyor.push_back(c);
    a[0] = c;
    for (int i = 1; i < n; i++)
        a[i].erase(a[i].begin() + a[i].find(c));
    for (int i = 1; i < n; i++) {
        if (a[i].size() == 1) {
            tayyor.push_back(a[i][0]);
            continue;
        }
        string temp = a[i];
        int j = i + 1;
        for (; j < n && a[j].size() == 1; j++);
        if (a[i].size() == 3) {
            if (j != n) {
                char c1 = a[j][0];
                print = tayyor + temp[0] + c1 + tayyor + temp[1] + c1;
	        	x = press(print);
                if (x == tayyor.size()) {
                    a[i] = temp[2], tayyor.push_back(temp[2]);
                } else if (x == tayyor.size() + 1) {
                    a[j].erase(a[j].begin() + a[j].find(c1));
                    a[i].erase(a[i].begin() + a[i].find(temp[2]));
                    i--;
                } else {
                    a[i].erase(a[i].begin() + a[i].find(temp[2]));
                    a[j] = c1;
                    i--;
                }
            } else {
                print = tayyor + temp[0] + tayyor + temp[1];
                x = press(print);
                if (x == tayyor.size()) {
                    a[i] = temp[2], tayyor.push_back(temp[2]);
                } else {
                    a[i].erase(a[i].begin() + a[i].find(temp[2]));
                    i--;
                }
            }
        } else {
            if (j != n) {
                char c1 = a[j][0];
                print = tayyor + temp[0] + c1;
                x = press(print);
                if (x == tayyor.size()) {
                    a[i] = temp[1];
                } else if (x == tayyor.size() + 1) {
                    a[j].erase(a[j].begin() + a[j].find(c1));
                    a[i] = temp[0];
                } else {
                    a[i] = temp[0];
                    a[j] = c1;
                }
            } else {
                print = tayyor + temp[0];
                x = press(print);
                if (x == tayyor.size()) {
                    a[i] = temp[1];
                } else {
                    a[i] = temp[0];
                }
            }
            tayyor.push_back(a[i][0]);
        }
    }
	return tayyor;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:44:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |                 if (x == tayyor.size()) {
      |                     ~~^~~~~~~~~~~~~~~~
combo.cpp:46:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |                 } else if (x == tayyor.size() + 1) {
      |                            ~~^~~~~~~~~~~~~~~~~~~~
combo.cpp:58:23: 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 (x == tayyor.size()) {
      |                     ~~^~~~~~~~~~~~~~~~
combo.cpp:70:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |                 if (x == tayyor.size()) {
      |                     ~~^~~~~~~~~~~~~~~~
combo.cpp:72:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |                 } else if (x == tayyor.size() + 1) {
      |                            ~~^~~~~~~~~~~~~~~~~~~~
combo.cpp:82:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |                 if (x == tayyor.size()) {
      |                     ~~^~~~~~~~~~~~~~~~

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