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View Compilation Error

0_0_16487284_23796.cpp:17:5: error: conflicting declaration 'int t'
 int t,n,m,k,x,y,ans;
     ^
0_0_16487284_23796.cpp:9:5: note: previous declaration as 'int t [400005]'
 int t[400005];
     ^
0_0_16487284_23796.cpp: In function 'int main()':
0_0_16487284_23796.cpp:57:10: error: cannot bind 'std::istream {aka std::basic_istream<char>}' lvalue to 'std::basic_istream<char>&&'
     cin>>t;
          ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:40:0,
                 from 0_0_16487284_23796.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:872:5: note: initializing argument 1 of 'std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = int [400005]]'
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
0_0_16487284_23796.cpp:58:12: error: lvalue required as decrement operand
     while(t--)
            ^
0_0_16487284_23796.cpp: At global scope:
0_0_16487284_23796.cpp:94:1: error: expected declaration before '}' token
 } 
 ^


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