Submission #142952

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
142952	2019-08-12 10:25:24	Bodo171	Shortcut (IOI16_shortcut)	C++14	100 / 100	1280 ms	57208 KiB

shortcut

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#include "shortcut.h"
#include <iostream>
using namespace std;
const int nmax=1000*1000+5;
const long long inf=1LL*1e18;
int d[nmax];
long long x[nmax],y[nmax];
int i,n;
long long C;
bool check(long long k)
{
    long long mxsum=-inf,mndif=inf;
    long long suml=-inf,sumr=inf,difl=-inf,difr=inf;
    long long sum,dif;
    int p=1,u=0;
    for(i=1;i<=n;i++)
    {
        while(p<=u&&x[i]-x[d[p]]+y[i]+y[d[p]]>k)
        {
            sum=x[d[p]]+y[d[p]];dif=x[d[p]]-y[d[p]];
            if(sum>mxsum) mxsum=sum;
            if(dif<mndif) mndif=dif;
            p++;
        }
        if(mxsum!=-inf)
        {
            suml=max(suml,-k+C+mxsum+x[i]+y[i]);
            sumr=min(sumr,k-C+mndif+x[i]-y[i]);
            difl=max(difl,-k+C-mndif+x[i]+y[i]);
            difr=min(difr,k-C-mxsum+x[i]-y[i]);
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 14 / 14
• Subtask 3: 8 / 8
• Subtask 4: 7 / 7
• Subtask 5: 33 / 33
• Subtask 6: 22 / 22
• Subtask 7: 4 / 4
• Subtask 8: 3 / 3