제출 #7037

#제출 시각아이디문제언어결과실행 시간메모리
7037gs13068로봇 (IOI13_robots)C++98
100 / 100
508 ms22552 KiB
#include "robots.h"
#include<algorithm>
#include<set>
#include<vector>

int V[1000000];
std::pair<int,int> D[1000000];
int R[50000];
std::vector<int> E[50000];

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[])
{
    int i,j,k,l,r,mid;
    for(i=0;i<T;i++)
    {
        D[i].first=W[i]+1;
        D[i].second=S[i]+1;
    }
    std::sort(X,X+A);
    std::sort(Y,Y+B);
    std::sort(D,D+T);
    for(i=0;i<T;i++)if((!A||D[i].first>X[A-1])&&(!B||D[i].second>Y[B-1]))return -1;
	for(i=0;i<B;i++)E[i].clear();
	for(i=0;i<T;i++)
	{
		j=std::lower_bound(Y,Y+B,D[i].second)-Y;
		if(j<B)E[j].push_back(i);
	}
    l=1;r=T;
    while(l<r)
    {
        mid=(l+r)/2;
        for(i=0;i<T;i++)V[i]=0;
        j=0;
        for(i=B-1;i>=0;i--)
        {
            j+=mid;
            if(j>2e9)j=2e9;
            for(k=E[i].size()-1;k>=0&&j>0;k--)
            {
                V[E[i][k]]=1;
                j--;
            }
        }
        for(i=0;i<A;i++)R[i]=0;
        j=0;
        for(i=0;i<T;i++)if(!V[i])
        {
            while(j<A&&(X[j]<D[i].first||R[j]==mid))j++;
            if(j<A)
            {
                V[i]=1;
                R[j]++;
            }
            else break;
        }
        if(i==T)r=mid;
        else l=mid+1;
    }
    return r;
}
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