View Compilation Error

0_0_13068642_18709.cpp: In function 'int main()':
0_0_13068642_18709.cpp:90:5: error: 'cin' was not declared in this scope
     cin>>T;
     ^
0_0_13068642_18709.cpp:98:9: error: 'string' was not declared in this scope
         string s;
         ^