读书笔记--程序设计

#include <stdio.h>
#include <stdlib.h>
#define max(x,y)  ((x>y)?x:y)
int main(int argc, char *argv[])
{
  int n,a[100],i,j,k;
  int len,max,ans=0;
  scanf("%d",&n);
  //input
  for(i=0;i<n;i++){
          scanf("%d",&a[i]);
  }   
  for(i=0;i<n;i++){
          for(j=i+1;j<n;j++){
                  for(k=j+1;k<n;k++){
                          len=a[i]+a[j]+a[k];
                          max=max(a[i],max(a[j],a[k]));
                          if(max<len-max){
                                          ans=max(ans,len);
                          }                        
                  }
          }
  }
  printf("%d\n",ans);
  system("PAUSE");    
  return 0;
}