hdu 1176

数塔问题
#include<iostream>
#include<cstring>
using namespace std;
int a[100009][12];
int maxi(int a,int b,int c)
{
    int max1;
    max1=a>b?a:b;
    max1=max1>c?max1:c;
    return max1;
}
int main()
{
    int n,x,y;
    while(cin>>n)
    {
        if(n==0) break;
        int max=0;
        memset(a,0,sizeof(a));
        for(int ii=0;ii<n;ii++)
        {
            scanf("%d%d",&x,&y);
            //cin>>x>>y;
            a[y][x]++;
            if(y>max)
                max=y;
        }
        for(int i=max-1;i>=0;i--)
        {
            if(a[i+1][0]>a[i+1][1]) a[i][0]+=a[i+1][0];
            else
                a[i][0]+=a[i+1][1];
            for(int j=1;j<=9;j++)
                a[i][j]+=maxi(a[i+1][j],a[i+1][j-1],a[i+1][j+1]);

            if(a[i+1][10]>a[i+1][9])
                a[i][10]+=a[i+1][10];
            else
                a[i][10]+=a[i+1][9];
        }
        cout<<a[0][5]<<endl;
    }
    return 0;
}