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View Compilation Error

0_0_25876140_3613.cpp: In function 'int main()':
0_0_25876140_3613.cpp:12:29: error: 'scanf' was not declared in this scope
 #define sc(x) scanf("%d", &x)
                             ^
0_0_25876140_3613.cpp:36:2: note: in expansion of macro 'sc'
  sc(T);
  ^
0_0_25876140_3613.cpp:50:3: error: 'cout' was not declared in this scope
   cout << ans << endl;
   ^
0_0_25876140_3613.cpp:50:18: error: 'endl' was not declared in this scope
   cout << ans << endl;
                  ^


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