제출 #970242

#제출 시각아이디문제언어결과실행 시간메모리
970242maxFedorchukGuess the number (BOI20_guess)C++17
0 / 100
0 ms456 KiB
#include <bits/stdc++.h> using namespace std; int ask(int zn) { cout<<zn<<endl; cout.flush(); int rt; cin>>rt; return rt; } void ans(int zn) { cout<<zn<<endl; cout.flush(); exit(0); } int main() { cin.tie(0); ios_base::sync_with_stdio(0); int n; cin>>n; int l=1,r=n; while(l<r) { int mid=(l+r)/2; int rt=ask(mid); if(rt==0) { ans(mid); } if(rt==-1) { l=mid+1; } else { r=mid-1; } } ans(l); return 0; }
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