/in/foo.cc:34:2: error: stray '\302' in program
      if(p[i].id<=mid)t[l1++]=p[i];
  ^
/in/foo.cc:34:3: error: stray '\240' in program
      if(p[i].id<=mid)t[l1++]=p[i];
   ^
/in/foo.cc:34:4: error: stray '\302' in program
      if(p[i].id<=mid)t[l1++]=p[i];
    ^
/in/foo.cc:34:5: error: stray '\240' in program
      if(p[i].id<=mid)t[l1++]=p[i];
     ^
/in/foo.cc:34:6: error: stray '\302' in program
      if(p[i].id<=mid)t[l1++]=p[i];
      ^
/in/foo.cc:34:7: error: stray '\240' in program
      if(p[i].id<=mid)t[l1++]=p[i];
       ^
/in/foo.cc:34:8: error: stray '\302' in program
      if(p[i].id<=mid)t[l1++]=p[i];
        ^
/in/foo.cc:34:9: error: stray '\240' in program
      if(p[i].id<=mid)t[l1++]=p[i];
         ^
/in/foo.cc:35:2: error: stray '\302' in program
      else t[l2++]=p[i];
  ^
/in/foo.cc:35:3: error: stray '\240' in program
      else t[l2++]=p[i];
   ^
/in/foo.cc:35:4: error: stray '\302' in program
      else t[l2++]=p[i];
    ^
/in/foo.cc:35:5: error: stray '\240' in program
      else t[l2++]=p[i];
     ^
/in/foo.cc:35:6: error: stray '\302' in program
      else t[l2++]=p[i];
      ^
/in/foo.cc:35:7: error: stray '\240' in program
      else t[l2++]=p[i];
       ^
/in/foo.cc:35:8: error: stray '\302' in program
      else t[l2++]=p[i];
        ^
/in/foo.cc:35:9: error: stray '\240' in program
      else t[l2++]=p[i];
         ^
/in/foo.cc:36:2: error: stray '\302' in program
      for(int i=l;i<=r;i++)p[i]=t[i];
  ^
/in/foo.cc:36:3: error: stray '\240' in program
      for(int i=l;i<=r;i++)p[i]=t[i];
   ^
/in/foo.cc:36:4: error: stray '\302' in program
      for(int i=l;i<=r;i++)p[i]=t[i];
    ^
/in/foo.cc:36:5: error: stray '\240' in program
      for(int i=l;i<=r;i++)p[i]=t[i];
     ^
/in/foo.cc:36:6: error: stray '\302' in program
      for(int i=l;i<=r;i++)p[i]=t[i];
      ^
/in/foo.cc:36:7: error: stray '\240' in program
      for(int i=l;i<=r;i++)p[i]=t[i];
       ^
/in/foo.cc:36:8: error: stray '\302' in program
      for(int i=l;i<=r;i++)p[i]=t[i];
        ^
/in/foo.cc:36:9: error: stray '\240' in program
      for(int i=l;i<=r;i++)p[i]=t[i];
         ^
/in/foo.cc:44:3: error: stray '\302' in program
       top--;
   ^
/in/foo.cc:44:4: error: stray '\240' in program
       top--;
    ^
/in/foo.cc:44:5: error: stray '\302' in program
       top--;
     ^
/in/foo.cc:44:6: error: stray '\240' in program
       top--;
      ^
/in/foo.cc:44:7: error: stray '\302' in program
       top--;
       ^
/in/foo.cc:44:8: error: stray '\240' in program
       top--;
        ^
/in/foo.cc:44:9: error: stray '\302' in program
       top--;
         ^
/in/foo.cc:44:10: error: stray '\240' in program
       top--;
          ^
/in/foo.cc:46:1: error: stray '\302' in program
     }//左边维护一个凸包
 ^
/in/foo.cc:46:2: error: stray '\240' in program
     }//左边维护一个凸包
  ^
/in/foo.cc:46:3: error: stray '\302' in program
     }//左边维护一个凸包
   ^
/in/foo.cc:46:4: error: stray '\240' in program
     }//左边维护一个凸包
    ^
/in/foo.cc:46:5: error: stray '\302' in program
     }//左边维护一个凸包
     ^
/in/foo.cc:46:6: error: stray '\240' in program
     }//左边维护一个凸包
      ^
/in/foo.cc:46:7: error: stray '\302' in program
     }//左边维护一个凸包
       ^
/in/foo.cc:46:8: error: stray '\240' in program
     }//左边维护一个凸包
        ^
/in/foo.cc:47:1: error: stray '\302' in program
     stack[++top]=0;
 ^
/in/foo.cc:47:2: error: stray '\240' in program
     stack[++top]=0;
  ^
/in/foo.cc:47:3: error: stray '\302' in program
     stack[++top]=0;
   ^
/in/foo.cc:47:4: error: stray '\240' in program
     stack[++top]=0;
    ^
/in/foo.cc:47:5: error: stray '\302' in program
     stack[++top]=0;
     ^
/in/foo.cc:47:6: error: stray '\240' in program
     stack[++top]=0;
      ^
/in/foo.cc:47:7: error: stray '\302' in program
     stack[++top]=0;
       ^
/in/foo.cc:47:8: error: stray '\240' in program
     stack[++top]=0;
        ^
/in/foo.cc:48:1: error: stray '\302' in program
     for(int i=mid+1;i<=r;i++)
 ^
/in/foo.cc:48:2: error: stray '\240' in program
     for(int i=mid+1;i<=r;i++)
  ^
/in/foo.cc:48:3: error: stray '\302' in program
     for(int i=mid+1;i<=r;i++)
   ^
/in/foo.cc:48:4: error: stray '\240' in program
     for(int i=mid+1;i<=r;i++)
    ^
/in/foo.cc:48:5: error: stray '\302' in program
     for(int i=mid+1;i<=r;i++)
     ^
/in/foo.cc:48:6: error: stray '\240' in program
     for(int i=mid+1;i<=r;i++)
      ^
/in/foo.cc:48:7: error: stray '\302' in program
     for(int i=mid+1;i<=r;i++)
       ^
/in/foo.cc:48:8: error: stray '\240' in program
     for(int i=mid+1;i<=r;i++)
        ^
/in/foo.cc:49:1: error: stray '\302' in program
     {
 ^
/in/foo.cc:49:2: error: stray '\240' in program
     {
  ^
/in/foo.cc:49:3: error: stray '\302' in program
     {
   ^
/in/foo.cc:49:4: error: stray '\240' in program
     {
    ^
/in/foo.cc:49:5: error: stray '\302' in program
     {
     ^
/in/foo.cc:49:6: error: stray '\240' in program
     {
      ^
/in/foo.cc:49:7: error: stray '\302' in program
     {
       ^
/in/foo.cc:49:8: error: stray '\240' in program
     {
        ^
/in/foo.cc:50:1: error: stray '\302' in program
      while(j<top&&getk(stack[j],stack[j+1])+eps>p[i].k)j++;
 ^
/in/foo.cc:50:2: error: stray '\240' in program
      while(j<top&&getk(stack[j],stack[j+1])+eps>p[i].k)j++;
  ^
/in/foo.cc:50:3: error: stray '\302' in program
      while(j<top&&getk(stack[j],stack[j+1])+eps>p[i].k)j++;
   ^
/in/foo.cc:50:4: error: stray '\240' in program
      while(j<top&&getk(stack[j],stack[j+1])+eps>p[i].k)j++;
    ^
/in/foo.cc:50:5: error: stray '\302' in program
      while(j<top&&getk(stack[j],stack[j+1])+eps>p[i].k)j++;
     ^
/in/foo.cc:50:6: error: stray '\240' in program
      while(j<top&&getk(stack[j],stack[j+1])+eps>p[i].k)j++;
      ^
/in/foo.cc:50:7: error: stray '\302' in program
      while(j<top&&getk(stack[j],stack[j+1])+eps>p[i].k)j++;
       ^
/in/foo.cc:50:8: error: stray '\240' in program
      while(j<top&&getk(stack[j],stack[j+1])+eps>p[i].k)j++;
        ^
/in/foo.cc:51:1: error: stray '\302' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
 ^
/in/foo.cc:51:2: error: stray '\240' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
  ^
/in/foo.cc:51:3: error: stray '\302' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
   ^
/in/foo.cc:51:4: error: stray '\240' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
    ^
/in/foo.cc:51:5: error: stray '\302' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
     ^
/in/foo.cc:51:6: error: stray '\240' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
      ^
/in/foo.cc:51:7: error: stray '\302' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
       ^
/in/foo.cc:51:8: error: stray '\240' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
        ^
/in/foo.cc:51:9: error: stray '\302' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
         ^
/in/foo.cc:51:10: error: stray '\240' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
          ^
/in/foo.cc:51:11: error: stray '\302' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
           ^
/in/foo.cc:51:12: error: stray '\240' in program
         f[p[i].id]=max(f[p[i].id],p[stack[j]].x*p[i].a+p[stack[j]].y*p[i].b);
            ^
/i