#include<stdio.h>
#include<stdlib.h>
#include<math.h>
struct Point{
       int x;
       int y;
}point[1000000+100];
char str[1000000+100];

main()
{
      int t,i;
      long long j,count=0,k;
      long long s=0;
   
      
      scanf("%d",&t);
      for(i=1;i<=t;i++){
          scanf("%s",str);
          point[0].x=0;
          point[0].y=0;
          count=0;
          for(k=1,j=0;str[j]!='5';j++,k++){
              count++;
              if(str[j]=='8'){
                  point[k].x=point[k-1].x;
                  point[k].y=point[k-1].y+1;
              }
              if(str[j]=='2'){
                  point[k].x=point[k-1].x;
                  point[k].y=point[k-1].y-1;
              }
              if(str[j]=='6'){
                  point[k].x=point[k-1].x+1;
                  point[k].y=point[k-1].y;
              }
              if(str[j]=='4'){
                  point[k].x=point[k-1].x-1;
                  point[k].y=point[k-1].y;
              }
              if(str[j]=='9'){
                  point[k].x=point[k-1].x+1;
                  point[k].x=point[k-1].y+1;
              }
              if(str[j]=='7'){
                  point[k].x=point[k-1].x-1;
                  point[k].y=point[k-1].y+1;
              }
              if(str[j]=='3'){
                  point[k].x=point[k-1].x+1;
                  point[k].y=point[k-1].y+1;
              }
              if(str[j]=='1'){
                  point[k].x=point[k-1].x-1;
                  point[k].y=point[k-1].y-1;
              }
          }
          s=0;
          if(count<=1)  printf("0\n");
          else{
               for(k=1;k<=count;k++){
                    s=s+point[k].x*point[k+1].y-point[k].y*point[k+1].x;
               }
               s=abs(s);
               if(s%2==0) printf("%lld\n",s/2);
               else{
                   
              
                   printf("%1ld.5\n",s/2);
               }
          }
      }
            return 0;
}

• Re:测试好多数据都对了为什么还WA啊..................... (2208) liurui39660 2016-05-06 16:53:58