【DP】捡苹果

#include<stdio.h>

int max(int a,int b)
{
    int c;
    if(a>b)
        c=a;
    else
        c=b;
        
    return c;
    }

int main()
{
    FILE *fin,*fout;
    int a[8][8],i,j;
    
    fin=fopen("in.txt","r");
    fout=fopen("out.txt","w");
    
    for(i=0;i<=5;i++)
        for(j=0;j<=5;j++)
            a[i][j]=0;
            
    for(i=0;i<=4;i++)
        for(j=0;j<=i;j++)
            fscanf(fin,"%d",&a[i][j]);
            
    for(;i>=0;i--)
        for(j=0;j<=i;j++)
            a[i][j]=max(a[i-1][j],a[i-1][j+1]);
            
    fprintf(fout,"%d\n",a[0][0]);
    
    fclose(fin);
    fclose(fout);
    getchar();
    getchar();
    return 0;
}