Submission #959791

#	Time	Username	Problem	Language	Result	Execution time	Memory
959791		Darren0724	Mađioničar (COI22_madionicar)	C++17	100 / 100	1227 ms	540 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define LCBorz ios_base::sync_with_stdio(false); cin.tie(0);
#define all(x) x.begin(), x.end()
//#define endl '\n'
const int N=200005;
int ask(int a,int b){
    cout<<"? "<<a<<' '<<b<<endl;
    int p;cin>>p;
    return p;
}
int32_t main() {
    //LCBorz;
    int n;cin>>n;
    int ans=1;
    for(int t:{0,1}){
        int len=t;
        for(int i=1;i<=n;i++){
            while(i>0&&i+len+1<=n&&ask(i,i+len+1)){
                len+=2;
                i--;
            }
            ans=max(ans,len);
        }
    }
    cout<<"! "<<ans<<endl;
    
    return 0;
}

• Subtask 1: 13 / 13
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 37 / 37