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View Compilation Error

0_0_33453363_21152.cpp:6:9: error: 'll' does not name a type
 typedef ll long long 
         ^
0_0_33453363_21152.cpp:10:1: error: 'll' does not name a type
 ll work(int a[maxn][maxn])
 ^
0_0_33453363_21152.cpp: In function 'int main()':
0_0_33453363_21152.cpp:28:37: error: 'll' was not declared in this scope
   for(int i=4;i<=100000;i++) c3[i]=(ll)i*(i-1)*(i-2)/6;
                                     ^
0_0_33453363_21152.cpp:31:3: error: 'cin' was not declared in this scope
   cin>>t;
   ^
0_0_33453363_21152.cpp:31:3: note: suggested alternative:
In file included from 0_0_33453363_21152.cpp:1:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^
0_0_33453363_21152.cpp:58:9: error: 'cout' was not declared in this scope
         cout << work(a1) - work(a2) - work(a3) + work(a4) << endl;
         ^
0_0_33453363_21152.cpp:58:9: note: suggested alternative:
In file included from 0_0_33453363_21152.cpp:1:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
0_0_33453363_21152.cpp:58:24: error: 'work' was not declared in this scope
         cout << work(a1) - work(a2) - work(a3) + work(a4) << endl;
                        ^
0_0_33453363_21152.cpp:58:62: error: 'endl' was not declared in this scope
         cout << work(a1) - work(a2) - work(a3) + work(a4) << endl;
                                                              ^
0_0_33453363_21152.cpp:58:62: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39:0,
                 from 0_0_33453363_21152.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:564:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^


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