Submission #990563

#	Time	Username	Problem	Language	Result	Execution time	Memory
990563		alexdd	Mađioničar (COI22_madionicar)	C++17	100 / 100	1264 ms	596 KiB

Main

#include<bits/stdc++.h>
using namespace std;
int n,cntq;

bool query(int le, int ri)
{
    if(le<1 || ri>n || le>ri)
        return 0;
    if(le==ri)
        return 1;
    int aux;
    cout<<"? "<<le<<" "<<ri<<endl;
    cin>>aux;
    return aux;
}
signed main()
{
    cin>>n;
    int mxm=1,p;
    for(int i=1;i<n;i++)
    {
        p = mxm/2;
        while(query(i-p,i+1+p))
            p++;
        mxm = max(mxm, 2*p);
    }
    for(int i=1;i<=n;i++)
    {
        p = (mxm+1)/2;
        while(query(i-p,i+p))
            p++;
        mxm = max(mxm, 2*p-1);
    }
    cout<<"! "<<mxm<<endl;
    return 0;
}

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