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View Compilation Error

0_0_36647990_12623.cpp:4:1: error: 'string' does not name a type
 string s;
 ^
0_0_36647990_12623.cpp: In function 'int main()':
0_0_36647990_12623.cpp:6:2: error: 'ios_base' has not been declared
  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
  ^
0_0_36647990_12623.cpp:6:31: error: 'cin' was not declared in this scope
  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
                               ^
0_0_36647990_12623.cpp:6:31: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:74:0,
                 from 0_0_36647990_12623.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^
0_0_36647990_12623.cpp:6:42: error: 'cout' was not declared in this scope
  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
                                          ^
0_0_36647990_12623.cpp:6:42: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:74:0,
                 from 0_0_36647990_12623.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
0_0_36647990_12623.cpp:10:3: error: 's' was not declared in this scope
   s.clear();
   ^


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