제출 #341920

#제출 시각아이디문제언어결과실행 시간메모리
341920a_playerColors (BOI20_colors)C++14
0 / 100
1 ms364 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; int query(ll a){ cout<<"? "<<a<<endl; int b; cin>>b; return b; } void answer(ll a){ cout<<"= "<<a<<endl; exit(0); } int main(){ int N; cin>>N; if(N>64)return 0; int ans=query(1); ans=query(N); if(ans==0)answer(N); int last=N-1; for(int i=2,j=N-1;last>1;i++,j--){ query(i); if(ans==0)answer(last); last--; if(last<=1)break; query(j); if(ans==0)answer(last); last--; } answer(1); }
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