제출 #1023374

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1023374		vanea	콤보 (IOI18_combo)	C++14	컴파일 에러	0 ms	0 KiB

combo

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

string guess_sequence(int n) {
    vector<string> pos = {"A", "B", "X", "Y"};
    string ans = "";
    if(press("AB")) {
        if(press("A")) ans += "A";
        else ans += "B";
    }
    else {
        if(press("X")) ans += "X";
        else ans += "Y";
    }
    int last = 1;
    string res = string(1, ans[0]);
    for(int i = 1; i < n; i++) {
        if(i == n-1) {
            string curr = "", last1 = "";
            for(auto it : pos) {
                if(it == res) continue;
                if(curr.length() == ans.length()+2) {
                    last1 = ans+it;
                }
                else {
                    curr += ans;
                    curr += it;
                }
            }
            if(press(curr) == last+1) {
                string curr1 = ans + curr[ans.length()];
                string curr2 = ans + curr[curr.length()-1];
                if(press(curr1) == last+1) ans += curr[ans.length()];
                else ans += curr[curr.length()-1];
            }
            else {
                ans += last1[last1.length()-1];
            }
        }
        else {
            string f = "", s = "", t = "";
            for(auto it : pos) {
                if(it == res) continue;
                if(f == "") f = it;
                else if(s == "") s = it;
                else t = it;
            }
            string curr = ans + f + s + ans + f + f + ans + f + t + ans + s;
            int k = press(curr);
            if(k == last+2) {
                ans += f;
            }
            else if(k == last+1) {
                ans += s;
            }
            else ans += t;
        }
        ++last;
    }
    if(ans.length() != n) {
        while(1)
    }
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:62:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   62 |     if(ans.length() != n) {
      |        ~~~~~~~~~~~~~^~~~
combo.cpp:64:5: error: expected primary-expression before '}' token
   64 |     }
      |     ^