uva 10421

模擬題

寫完這題Eclipse爆掉了...

//====================================================================||
//                        Name  : Critical Wave.cpp                             ||
//                     Date : May 31, 2013 11:15:07 PM                         ||
//                         Author : GCA                               ||
//                  6AE7EE02212D47DAD26C32C0FE829006                  ||
//====================================================================||
#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <climits>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <cctype>
#include <utility>
using namespace std;
#ifdef ONLINE_JUDGE
#define ll "%lld"
#else
#define ll "%I64d"
#endif
typedef unsigned int uint;
typedef long long int Int;
#define Set(a,s) memset(a,s,sizeof(a))
#define Write(w) freopen(w,"w",stdout)
#define Read(r) freopen(r,"r",stdin)
#define Pln() printf("\n")
#define I_de(x,n)for(int i=0;i<n;i++)printf("%d ",x[i]);Pln()
#define De(x)printf(#x"%d\n",x)
#define For(i,x)for(int i=0;i<x;i++)
#define CON(x,y) x##y
#define Pmz(dp,nx,ny)for(int hty=0;hty<ny;hty++){for(int htx=0;htx<nx;htx++){\
    printf("%d ",dp[htx][hty]);}Pln();}
#define M 55
#define PII pair<int,int>
#define PB push_back
#define oo INT_MAX
#define Set_oo 0x3f
#define Is_debug true
#define debug(...) if(Is_debug)printf("DEBUG: "),printf(__VA_ARGS__)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin();it!=(c).end();it++)
#define eps 1e-6
bool xdy(double x,double y){return x>y+eps;}
bool xddy(double x,double y){return x>y-eps;}
bool xcy(double x,double y){return x<y-eps;}
bool xcdy(double x,double y){return x<y+eps;}
int min3(int x,int y,int z){
    int tmp=min(x,y);
    return min(tmp,z);
}
int max3(int x,int y,int z){
    int tmp=max(x,y);
    return max(tmp,z);
}
int n;
struct point{
    int x,y;
}a[1005],b[1005];
bool cmpx(point a,point b){
    return a.x<b.x;
}
bool cmpy(point a,point b){
    return a.y<b.y;
}
int main() {
//    ios_base::sync_with_stdio(0);

    freopen("input.txt","r",stdin);
    while(~scanf("%d",&n)){
        for(int i=0;i<n;i++){
            scanf("%d %d",&a[i].x,&a[i].y);
            b[i].x=a[i].x;
            b[i].y=a[i].y;
        }
//        debug("%d\n",n);
        sort(a,a+n,cmpy);
        sort(b,b+n,cmpx);
        int ans=0;
        int j=0;
        int tsans=0;
        for(int i=0;i<n;i++){
            if(i==0||a[i].y!=a[i-1].y){
                int y=a[i].y;
                int next=2;
                for(j=0,tsans=0;;){
                    b[n].y=y;
                    while(b[j].y!=y)j++;
//                    printf("%d\n",j);
                    if(j>=n)break;
                    int tmp=b[j].x;
                    b[n].x=tmp+1;
                    while(b[j].x==tmp)j++;
                    tsans++;
                    y+=next;
                    next=-next;
                }
                ans=max(ans,tsans);
                next=-2;
                y=a[i].y;
                for(j=0,tsans=0;;){
                    b[n].y=y;
                    while(b[j].y!=y)j++;
//                    printf("%d\n",j);
                    if(j>=n)break;
                    int tmp=b[j].x;
                    b[n].x=tmp+1;
                    while(b[j].x==tmp)j++;
                    tsans++;
                    y+=next;
                    next=-next;
                }
                ans=max(ans,tsans);
            }

        }
        printf("%d\n",ans);
    }









}