First week 7.19-7.25

The summer vacation is still written by week. A multi-school question is opened in a separate article.

7.19

Fill a calculated guest.

429 Penguin Mobile Map

Because the angles are all integers. Calculates the small sector area of 1° for each angle and can.

The pit point is that R has 1e5. Accuracy is 1e-3. So the Pi precision is high.

When the angle is a=b, it is not covered. Understood to cover a week so always WA.

1# include <iostream>2# include <cstdio>3# include <cstring>4# include <algorithm>5 using namespacestd;6 Const Long DoublePi=3.141592653589793;7 Long Doublemax[ the];8 9 intMainvoid)Ten { One     intT Cin>>T; A      while(t--) -     { -memset (MAX,0,sizeof(MAX)); the         intN scanf"%d",&n); -          while(n--) -         { -             intb;Long DoubleR; +scanf"%lf%d%d",&r,&a,&b); -a+= -; b+= -; +              for(inti=a;i<b;i++) max[i]=Max (max[i],r); A         } at         Long Doubleans=0; -          for(intI=0;i< the; i++) ans+=pi*max[i]*max[i]/ the; -printf"%lf\n", ans); -     } -     return 0; -}

Aguin

First week 7.19-7.25