제출 #576240

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
576240		teki	콤보 (IOI18_combo)	C++11	컴파일 에러	0 ms	0 KiB

combo

#include <bits/stdc++.h>

typedef long long ll;

#define pb push_back
#define MS(x,y) memset((x),(y),sizeof((x)))
const ll MN = 1000000007;

using namespace std;

char seq[] = {'A','B','X','Y'};

int press(string p) {
    cout<<"? "<<p<<endl;
    int br;
    cin>>br;
    return br;
}

string guess_sequence(int n) {
    string curr;

    int ans1 = press("AB");
    if (ans1 > 0) {
        int ans2 = press("A");
        if (ans2 > 0) curr = "A";
        else curr = "B";
    } else {
        int ans2 = press("X");
        if (ans2 > 0) curr = "X";
        else curr = "Y";
    }

    for (int i = 1; i<n-1; i++) {
        string query;
        int ctr = 1;

        char koi[3];

        for (int j = 0; j<4; j++) {
            if (curr[0] == seq[j]) continue;

            koi[ctr-1] = seq[j];

            if (ctr == 1) query += curr+seq[j];
            else if (ctr == 2) {
                string tmp = curr+seq[j];
                for (int k = 0; k<4; k++) {
                    if (curr[0] == seq[k]) continue;

                    query += tmp+seq[k];
                }
            }
            ctr++;
        }

        int ans = press(query);

        if (ans == curr.length()) curr += koi[2];
        else if (ans == curr.length()+1) curr += koi[0];
        else if (ans == curr.length()+2) curr += koi[1];
    }

    for (int i = 0; i<4; i++) {
        string query = curr;
        query += seq[i];

        if (press(query) >= n) {
            curr += seq[i];
            break;
        }
    }

    return curr;
}

int main()
{
    #if LOCAL_DEBUG
        fstream cin("in.txt");
    #endif

    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    string secret = "ABXYY";
    cout<<guess_sequence(secret.length());

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:59:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |         if (ans == curr.length()) curr += koi[2];
      |             ~~~~^~~~~~~~~~~~~~~~
combo.cpp:60:22: 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 (ans == curr.length()+1) curr += koi[0];
      |                  ~~~~^~~~~~~~~~~~~~~~~~
combo.cpp:61:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |         else if (ans == curr.length()+2) curr += koi[1];
      |                  ~~~~^~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccpAgRDp.o: in function `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
grader.cpp:(.text+0x0): multiple definition of `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'; /tmp/cc1LQpAp.o:combo.cpp:(.text+0xc0): first defined here
/usr/bin/ld: /tmp/ccpAgRDp.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc1LQpAp.o:combo.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status