Submission #1051955

#	Time	Username	Problem	Language	Result	Execution time	Memory
1051955		MrAndria	Colors (BOI20_colors)	C++14	0 / 100	0 ms	344 KiB

Colors

#include <bits/stdc++.h>
using namespace std;
#define ff first;
#define ss second
#define pb push_back
//#define int long long
int k,l,r,n,ans;
bool b1;
int main(){
    cin>>n;
    cout<<"? "<<1<<endl;
    cin>>b1;
    
    l=2;
    r=n;
    k=2;
    while(l<r){
        if(k%2==0){
            cout<<"? "<<r<<endl;
            cin>>b1;
            if(b1==1){
                ans=r-(l-1);
            }else{
                break;
            }
            r--;
        }else{
            cout<<"? "<<l<<endl;
            cin>>b1;
            if(b1==1){
                ans=(r+1)-l;
            }else{
                break;
            }
            l++;
        }
        k++;
        
    }
    cout<<"= "<<ans<<endl;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 33