제출 #388347

#제출 시각아이디문제언어결과실행 시간메모리
388347warner1129콤보 (IOI18_combo)C++17
컴파일 에러
0 ms0 KiB
#// define local #ifdef local #include <bits/stdc++.h> using namespace std; int press(string p) { cout << p; int ret; cin >> ret; return ret; } string guess_sequence(int); signed main() { int n; cin >> n; cout << guess_sequence(n) << '\n'; return 0; } #endif string guess_sequence(int n) { string ans, tmp; int ret, len = 1; ret = press("AB"); if (ret == 1) { ret = press("A"); if (ret == 1) ans = "A"; else ans = "B"; } else { ret = press("X"); if (ret == 1) ans = "X"; else ans = "Y"; } vector<string> L; if ("A" != ans) L.push_back("A"); if ("B" != ans) L.push_back("B"); if ("X" != ans) L.push_back("X"); if ("Y" != ans) L.push_back("Y"); string P[4]; P[0] = L[0] + L[0], P[1] = L[0] + L[1], P[2] = L[0] + L[2]; P[3] = L[1]; for (int i = 2; i < n; i++) { tmp = ""; for (int j = 0; j < 4; j++) tmp += (ans + P[j]); ret = press(tmp); if (ret == len + 2) ans += L[0]; else if (ret == len + 1) ans += L[1]; else if (ret == len) ans += L[2]; len++; } ret = press(ans + L[0] + ans + L[1]); if (ret == len+1) { ret = press(ans + L[0]); if (ret == len+1) ans += L[0]; else ans += L[1]; } else if (ret == len) ans += L[2]; assert(ans.size() == n); return ans; }

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp:21:1: error: 'string' does not name a type
   21 | string guess_sequence(int n) {
      | ^~~~~~