OJ-Problems-Source/HDOJ/4001_autoAC.cpp
2016-09-04 14:21:47 +08:00

77 lines
1.6 KiB
C++

#include<cstdio>
#include<cstring>
#include<string>
#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;
struct block
{
int x,y,z,d;
}b[1005];
long long dp[1005];
int n;
bool cmp(block a,block b)
{
if(a.x!=b.x)return a.x<b.x;
if(a.y!=b.y)return a.y<b.y;
return a.d>b.d;
}
void DP()
{
long long ans=b[0].z;
for(int i=0;i<n;i++)
{
dp[i]=b[i].z;
ans=max(ans,dp[i]);
}
for(int i=1;i<n;i++)
{
if(b[i].d==0)
{
for(int j=0;j<i;j++)
{
if(b[j].x<=b[i].x&&b[j].y<=b[i].y)
dp[i]=max(dp[i],dp[j]+b[i].z);
}
}
if(b[i].d==1)
{
for(int j=0;j<i;j++)
{
if(b[j].x<=b[i].x&&b[i].y>=b[j].y&&(b[i].y*b[j].y||b[i].x>b[j].x))
dp[i]=max(dp[i],dp[j]+b[i].z);
}
}
if(b[i].d==2)
{
for(int j=0;j<i;j++)
{
if(b[i].x>b[j].x&&b[i].y>b[j].y)
{
dp[i]=max(dp[i],dp[j]+b[i].z);
}
}
}
ans=max(ans,dp[i]);
}
cout<<ans<<'\n';
}
int main()
{
while(1)
{
scanf("%d",&n);
if(n==0)break;
for(int i=0;i<n;i++)
{
scanf("%d%d%d%d",&b[i].x,&b[i].y,&b[i].z,&b[i].d);
if(b[i].x<b[i].y)
swap(b[i].x,b[i].y);
}
sort(b,b+n,cmp);
DP();
}
return 0;
}