http://poj.org/problem?id=2029 //* @author: ccQ.SuperSupper import java.io.*; import java.util.*; public class Main { /** * @param args */ static int max(int a,int b) { if(a>b) return a; return b; } public static void main(String[] args) { // TODO Auto-generated method stub int k,n,m,a,b; int i,j; int DP[][] = new int[110][110]; Scanner cin = new Scanner(System.in); while(cin.hasNext()) { k = cin.nextInt(); if(k==0) break; n = cin.nextInt(); m = cin.nextInt(); for(i=0;i< 110;++i) for(j=0;j< 110;++j) DP[i][j]=0; for(i=0;i< k;++i) { a = cin.nextInt(); b = cin.nextInt(); DP[a][b]=1; } a = cin.nextInt(); b = cin.nextInt(); for(i=1;i<=n;++i) for(j=1;j<=m;++j) { DP[i][j]=DP[i-1][j]+DP[i][j-1]-DP[i-1][j-1]+DP[i][j]; } k = 0; for(i=1;i<=n;++i) for(j=1;j<=m;++j) if(i>=a&&j>=b) { k = max(k,DP[i][j]-DP[i-a][j]-DP[i][j-b]+DP[i-a][j-b]); } System.out.println(k); } } }
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