Submission #529055

#	Time	Username	Problem	Language	Result	Execution time	Memory
529055		pokmui9909	Combo (IOI18_combo)	C++17	100 / 100	31 ms	688 KiB

combo

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

std::string guess_sequence(int N) {
    string S;
    if(press("AB")){
        if(press("A")){
            S = "A";
        } else {
            S = "B";
        }
    } else {
        if(press("X")){
            S = "X";
        } else {
            S = "Y";
        }
    }
    vector<string> V;
    if(S != "A") V.push_back("A");
    if(S != "B") V.push_back("B");
    if(S != "X") V.push_back("X");
    if(S != "Y") V.push_back("Y");
    string P = V[0], Q = V[1], R = V[2];
    for(int i = 2; i <= N - 1; i++){
        ll k = press(S + P + P + S + P + Q + S + P + R + S + Q);
        if(k == S.size() + 2){
            S += P;
        } else if(k == S.size() + 1){
            S += Q;
        } else {
            S += R;
        }
    }
    if(N != 1){
        if(press(S + P) > S.size()){
            S += P;
        } else if(press(S + Q) > S.size()) {
            S += Q;
        } else {
            S += R;
        }
    }
    return S;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:29:14: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |         if(k == S.size() + 2){
      |            ~~^~~~~~~~~~~~~~~
combo.cpp:31:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |         } else if(k == S.size() + 1){
      |                   ~~^~~~~~~~~~~~~~~
combo.cpp:38:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |         if(press(S + P) > S.size()){
      |            ~~~~~~~~~~~~~^~~~~~~~~~
combo.cpp:40:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |         } else if(press(S + Q) > S.size()) {
      |                   ~~~~~~~~~~~~~^~~~~~~~~~

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