제출 #1185767

#제출 시각아이디문제언어결과실행 시간메모리
1185767Mamikonm1Combo (IOI18_combo)C++20
10 / 100
14 ms2544 KiB
#include<bits//stdc++.h> #include "combo.h" using namespace std; string guess_sequence(int N) { string s; vector<pair<int,char>>x({{0,'A'},{0,'B'},{0,'X'},{0,'Y'}}); set<string>st; int mx=0,cur; for(;;){ bool ok=0; sort(rbegin(x),rend(x)); for(auto& j:x){ s+=j.second; if(!st.count(s)){ cur=press(s); if(cur>mx){ mx=cur; j.first++; ok=1; break; } st.insert(s); } s.pop_back(); } if(!ok or s.size()==N)break; } for(;s.size()!=N;){ bool ok=0; sort(rbegin(x),rend(x)); for(auto& j:x){ s=j.second+s; if(!st.count(s)){ cur=press(s); if(cur>mx){ mx=cur; ok=1; j.first++; break; } st.insert(s); } reverse(begin(s),end(s)); s.pop_back(); reverse(begin(s),end(s)); } if(!ok)break; } return s; }
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