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View Compilation Error

0_0_30284697_16911.cpp:20:21: error: 'm' was not declared in this scope
  LL a[N],mxl[N],mxr[m],mxm[N],sum[N];
                     ^
0_0_30284697_16911.cpp: In member function 'void seg_tree::init(int)':
0_0_30284697_16911.cpp:23:25: error: 'mxr' was not declared in this scope
   ft(i,1,n) a[i]=mxl[i]=mxr[i]=mxm[i]=sum[i]=0;
                         ^
0_0_30284697_16911.cpp: In member function 'void seg_tree::update(int)':
0_0_30284697_16911.cpp:27:7: error: 'l' was not declared in this scope
   if (l==r){
       ^
0_0_30284697_16911.cpp:27:10: error: 'r' was not declared in this scope
   if (l==r){
          ^
0_0_30284697_16911.cpp:28:11: error: 'mxr' was not declared in this scope
    mxl[x]=mxr[x]=mxm[x]=max(a[x],0);
           ^
0_0_30284697_16911.cpp:28:35: error: no matching function for call to 'max(LL&, int)'
    mxl[x]=mxr[x]=mxm[x]=max(a[x],0);
                                   ^
0_0_30284697_16911.cpp:28:35: note: candidates are:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_30284697_16911.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:217:5: note: template<class _Tp> const _Tp& std::max(const _Tp&, const _Tp&)
     max(const _Tp& __a, const _Tp& __b)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:217:5: note:   template argument deduction/substitution failed:
0_0_30284697_16911.cpp:28:35: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
    mxl[x]=mxr[x]=mxm[x]=max(a[x],0);
                                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_30284697_16911.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:261:5: note: template<class _Tp, class _Compare> const _Tp& std::max(const _Tp&, const _Tp&, _Compare)
     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:261:5: note:   template argument deduction/substitution failed:
0_0_30284697_16911.cpp:28:35: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
    mxl[x]=mxr[x]=mxm[x]=max(a[x],0);
                                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:64,
                 from 0_0_30284697_16911.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3449:5: note: template<class _Tp> _Tp std::max(std::initializer_list<_Tp>)
     max(initializer_list<_Tp> __l)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3449:5: note:   template argument deduction/substitution failed:
0_0_30284697_16911.cpp:28:35: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
    mxl[x]=mxr[x]=mxm[x]=max(a[x],0);
                                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:64,
                 from 0_0_30284697_16911.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3454:5: note: template<class _Tp, class _Compare> _Tp std::max(std::initializer_list<_Tp>, _Compare)
     max(initializer_list<_Tp> __l, _Compare __comp)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3454:5: note:   template argument deduction/substitution failed:
0_0_30284697_16911.cpp:28:35: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
    mxl[x]=mxr[x]=mxm[x]=max(a[x],0);
                                   ^
0_0_30284697_16911.cpp:33:3: error: 'mxr' was not declared in this scope
   mxr[x]=max(mxr[rc],sum[rc]+mxr[lc]);
   ^
0_0_30284697_16911.cpp: In function 'void solve()':
0_0_30284697_16911.cpp:75:28: error: 'x' was not declared in this scope
  ft(i,1,n) scanf("%d%d%d",&x[i],&y[i],&w[i]);
                            ^
0_0_30284697_16911.cpp:75:34: error: 'y' was not declared in this scope
  ft(i,1,n) scanf("%d%d%d",&x[i],&y[i],&w[i]);
                                  ^
0_0_30284697_16911.cpp:75:40: error: 'w' was not declared in this scope
  ft(i,1,n) scanf("%d%d%d",&x[i],&y[i],&w[i]);
                                        ^
0_0_30284697_16911.cpp:96:11: error: a function-definition is not allowed here before '{' token
 int main(){
           ^
0_0_30284697_16911.cpp:100:1: error: expected '}' at end of input
 }
 ^


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