Submission #642306

#TimeUsernameProblemLanguageResultExecution timeMemory
642306ErennedirloGuess the number (BOI20_guess)C++17
0 / 100
2455 ms208 KiB
#include<bits/stdc++.h> using namespace std; int main(){ int N; cin>>N; int left=1, right=N; while(left <= right){ int tmp=(right-left)/2+left; int ans; cout<<"?"<<" "<<tmp<<endl; cin>>ans; if(ans==-1){ right=tmp; } else if(ans==0){ cout<<"= "<<tmp; break; } else{ left=tmp; } } return 0; }
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