Submission #779393

#	Time	Username	Problem	Language	Result	Execution time	Memory
779393		groshi	Mađioničar (COI22_madionicar)	C++17	38 / 100	1354 ms	1492 KiB

Main

#include<bits/stdc++.h>
#define int long long
using namespace std;
int R[2][200000];
int32_t main()
{
    //cin.tie(0);
    //cout.tie(0);
    //ios_base::sync_with_stdio(0);
    int n;
    cin>>n;
    int maxx=0;
    for(int j=0;j<=1;j++)
    {
        R[j][0]=0;
        int rp=0;
        int i=1;
        while(i<=n)
        {
            while(i-rp-1>=1 && i+j+rp<=n)
            {
                cout<<"? "<<i-rp-1<<" "<<i+j+rp<<"\n";
                int co;
                cin>>co;
                if(co==1)
                    rp++;
                else break;
            }
            R[j][i]=rp;
            int k=1;
            while((R[j][i-k]!=rp-k)&&(k<rp))
            {
                R[j][i+k]=min(R[j][i-k],rp-k);
                k++;
            }
            rp=max(rp-k,0LL);
            i+=k;
        }
    }
    for(int i=0;i<=1;i++)
        for(int j=0;j<=n;j++)
            maxx=max(maxx,R[i][j]*2+i);
    cout<<"! "<<maxx;
    return 0;
}

• Subtask 1: 13 / 13
• Subtask 2: 25 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 37