제출 #1007172

#제출 시각아이디문제언어결과실행 시간메모리
1007172devariaota콤보 (IOI18_combo)C++17
0 / 100
0 ms344 KiB
#include "combo.h" #include <bits/stdc++.h> using namespace std; #define all(x) x.begin(), x.end() // int press(string hm) { // cout << hm << endl; // int ans;cin>>ans; // return ans; // } string S = "ABXY"; char getpatokan() { int res1 = press("AB"), res2 = press("BX"); if (res1 && res2) return 'B'; else if (res1) return 'A'; else if (res2) return 'X'; else return 'Y'; } // ABXYBYYXB // patokan: A // BXYBYYXB // guess 2 chars by 2 queries // XX, BX, BY, YB -> 2 // XB, BB, XY, YX -> 1 // XXX // AYY string guess_sequence(int n) { if (n == 0) return ""; char patokan = getpatokan(); set<char> st{'A', 'B', 'X', 'Y'}; st.erase(patokan); string now; now += patokan; vector<char> a(all(st)); // cout << a << endl; for (int i = 0; i < n-2; i++) { // cout << now << endl; string s; for (int j = 0; j < 3; j++) s += now + a[0] + a[j]; s += now + a[1]; int x = press(s); if (x-now.size() == 0) now += a[2]; else if (x - now.size() == 1) now += a[1]; else now += a[0]; } if (n >= 2) { for (int i = 0; i < 2; i++) { if (press(now + a[i]) == now.size()+1) { return now+a[i]; } } return now + a[3]; } return now; } // int main() { // int n;cin>>n; // cout << guess_sequence(n) << endl; // }

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:58:29: 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 (press(now + a[i]) == now.size()+1) {
      |           ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
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