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View Compilation Error

0_0_37881332_31276.cpp:3:5: error: 'maxn' was not declared in this scope
 } e[maxn];
     ^
0_0_37881332_31276.cpp:7:8: error: 'maxn' was not declared in this scope
 int mp[maxn][4];
        ^
0_0_37881332_31276.cpp: In function 'int main()':
0_0_37881332_31276.cpp:9:13: error: 'read' was not declared in this scope
  int _=read();
             ^
0_0_37881332_31276.cpp:12:10: error: 'mp' was not declared in this scope
   memset(mp,-inf,sizeof mp);
          ^
0_0_37881332_31276.cpp:12:14: error: 'inf' was not declared in this scope
   memset(mp,-inf,sizeof mp);
              ^
0_0_37881332_31276.cpp:12:27: error: 'memset' was not declared in this scope
   memset(mp,-inf,sizeof mp);
                           ^
0_0_37881332_31276.cpp:13:11: error: 'cin' was not declared in this scope
   int n,q;cin>>n>>q;
           ^
0_0_37881332_31276.cpp:14:32: error: 'e' was not declared in this scope
   for(int i=1; i<=n; i++) cin>>e[i].x>>e[i].y>>e[i].w;
                                ^
0_0_37881332_31276.cpp:15:8: error: 'e' was not declared in this scope
   sort(e+1,e+1+n,cmp);
        ^
0_0_37881332_31276.cpp:15:21: error: 'sort' was not declared in this scope
   sort(e+1,e+1+n,cmp);
                     ^
0_0_37881332_31276.cpp:18:30: error: 'y' was not declared in this scope
    mp[i][0]=max(mp[i+1][0],x+y);
                              ^
0_0_37881332_31276.cpp:18:31: error: 'max' was not declared in this scope
    mp[i][0]=max(mp[i+1][0],x+y);
                               ^
0_0_37881332_31276.cpp:25:22: error: 'scanf' was not declared in this scope
    scanf("%d%d",&x,&y);
                      ^
0_0_37881332_31276.cpp:30:49: error: 'max' was not declared in this scope
     int d=max(max(-x-y+mp[mid][0],x-y+mp[mid][2]),max(-x+y+mp[mid][1],x+y+mp[mid][3]));
                                                 ^
0_0_37881332_31276.cpp:30:86: error: 'max' was not declared in this scope
     int d=max(max(-x-y+mp[mid][0],x-y+mp[mid][2]),max(-x+y+mp[mid][1],x+y+mp[mid][3]));
                                                                                      ^
0_0_37881332_31276.cpp:30:86: error: redeclaration of '<typeprefixerror>max'
0_0_37881332_31276.cpp:30:49: note: previous declaration '<typeprefixerror>max'
     int d=max(max(-x-y+mp[mid][0],x-y+mp[mid][2]),max(-x+y+mp[mid][1],x+y+mp[mid][3]));
                                                 ^
0_0_37881332_31276.cpp:39:53: error: 'max' was not declared in this scope
             int d=max(max(-x-y+mp[l][0],x-y+mp[l][2]),max(-x+y+mp[l][1],x+y+mp[l][3]));
                                                     ^
0_0_37881332_31276.cpp:39:86: error: 'max' was not declared in this scope
             int d=max(max(-x-y+mp[l][0],x-y+mp[l][2]),max(-x+y+mp[l][1],x+y+mp[l][3]));
                                                                                      ^
0_0_37881332_31276.cpp:39:86: error: redeclaration of '<typeprefixerror>max'
0_0_37881332_31276.cpp:39:53: note: previous declaration '<typeprefixerror>max'
             int d=max(max(-x-y+mp[l][0],x-y+mp[l][2]),max(-x+y+mp[l][1],x+y+mp[l][3]));
                                                     ^
0_0_37881332_31276.cpp:40:27: error: 'min' was not declared in this scope
             d=min(e[l].w,d);
                           ^
0_0_37881332_31276.cpp:42:13: error: 'cout' was not declared in this scope
             cout<<ans<<"\n";
             ^


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