Submission #5889

#	Time	Username	Problem	Language	Result	Execution time	Memory
5889		baneling100	막대기 (KOI13_game)	C++98	100 / 100	64 ms	5388 KiB

game

#include <stdio.h>
#include <stdlib.h>
#include <algorithm>

using namespace std;

typedef pair <int,int> ppair;
pair <int,int> A[100001];
pair <int,int> B[100001];
pair <ppair,int> Stick[100001];
int N, L;
long long D[2][100001], Ans;

void input(void)
{
    int i, t, d, Acnt=0, Bcnt=0;

    scanf("%d %d",&N,&L);
    for(i=1 ; i<=N ; i++)
    {
        scanf("%d %d",&t,&d);
        A[i]=make_pair(t,i);
        B[i]=make_pair(d,i);
        Stick[i].second=abs(t-d)+L;
    }
    sort(A+1,A+N+1);
    sort(B+1,B+N+1);
    A[0].first=B[0].first=-1;
    for(i=1 ; i<=N ; i++)
    {
        if(A[i].first!=A[i-1].first)
            Acnt++;
        if(B[i].first!=B[i-1].first)
            Bcnt++;
        Stick[A[i].second].first.first=Acnt;
        Stick[B[i].second].first.second=Bcnt;
    }
    sort(Stick+1,Stick+N+1);
}

void process(void)
{
    int i;
    long long temp;

    for(i=1 ; i<=N ; i++)
    {
        temp=0;
        if(D[0][Stick[i].first.first]<D[1][Stick[i].first.second]+Stick[i].second)
        {
            temp=D[1][Stick[i].first.second]+Stick[i].second;
            if(Ans<temp)
                Ans=temp;
        }
        if(D[1][Stick[i].first.second]<D[0][Stick[i].first.first]+Stick[i].second)
        {
            D[1][Stick[i].first.second]=D[0][Stick[i].first.first]+Stick[i].second;
            if(Ans<D[1][Stick[i].first.second])
                Ans=D[1][Stick[i].first.second];
        }
        if(temp)
            D[0][Stick[i].first.first]=temp;
    }
}

void output(void)
{
    printf("%lld",Ans);
}

int main(void)
{
    input();
    process();
    output();

    return 0;
}

• Subtask 1: 11 / 11
• Subtask 2: 13 / 13
• Subtask 3: 16 / 16
• Subtask 4: 22 / 22
• Subtask 5: 38 / 38