Submission #73987

#	Time	Username	Problem	Language	Result	Execution time	Memory
73987		renatsj	The Big Prize (IOI17_prize)	C++14	90 / 100	120 ms	572 KiB

prize

#include<bits/stdc++.h>
#include "prize.h"
using namespace std;
int i,j,n,m,l,r,c,xl,xr,maz,rez,h[5][2];
vector<int> xx;
int find_best(int n)
{
    h[0][0]=-1;
    h[1][0]=-1;
    h[2][0]=-1;
    h[3][0]=-1;
    h[4][0]=-1;
    l=0;
    r=n-1;
    rez=0;
    maz=0;
    while (true)
    {
        //cout << l << " " << r << "\n";
        while (l<r)
        {
            c=l+(r-l)/2;
            xx=ask(c);
            xl=xx[0];
            xr=xx[1];
            //cout << l << " " << c << " " << r << " " << maz << " " << xl << " " << xr << "\n" << h[0][0] << " " << h[1][0] << " " << h[2][0] << " " << h[3][0] << " " << h[4][0] << "\n" << h[0][1] << " " << h[1][1] << " " << h[2][1] << " " << h[3][1] << " " << h[4][1] << "\n";
            if (xl+xr==0)
            {
                return c;
            }
            if (xl+xr>maz)
            {
                l=0;
                r=n-1;
                rez=0;
                maz=xl+xr;
                h[0][1]=0;
                h[1][1]=0;
                h[2][1]=0;
                h[3][1]=0;
                h[4][1]=0;
            }
            else if (xl+xr<maz)
            {
                r=c;
            }
            else if (xl>rez)
            //else if ((h[0][0]==xl+xr&&xl>h[0][1])||(h[1][0]==xl+xr&&xl>h[1][1])||(h[2][0]==xl+xr&&xl>h[2][1])||(h[3][0]==xl+xr&&xl>h[3][1])||(h[4][0]==xl+xr&&xl>h[4][1]))
            {
                r=c-1;
            }
            else
            {
                l=c+1;
            }
        }
        if (l<=n-1)
        {
            xx=ask(l);
            xl=xx[0];
            xr=xx[1];
        }
        if (xl+xr==0)
        {
            return l;
        }
        rez++;
        l++;
        //cout << l << " " << r << "\n";
        if (l<=n-1)
        {
            xx=(ask(l));
            xl=xx[0];
            xr=xx[1];
            if (xl+xr==0)
            {
                return l;
            }
        }
        while (xl+xr<maz&&l<n-1)
        {
            l++;
            rez++;
            //cout << l << " " << r << "\n";
            xx=(ask(l));
            xl=xx[0];
            xr=xx[1];
            if (xl+xr==0)
            {
                return l;
            }
        }
        if (xl+xr>maz)
        {
            maz=xl+xr;
            l=0;
            r=n-1;
            rez=0;
            h[0][1]=0;
            h[1][1]=0;
            h[2][1]=0;
            h[3][1]=0;
            h[4][1]=0;
        }
        r=n-1;
    }
}

• Subtask 1: 20 / 20
• Subtask 2: 70 / 80