View Compilation Error

0_0_13729239_29430.cpp:6:1: error: 'map' does not name a type
 map <string , int>  mp;
 ^
0_0_13729239_29430.cpp: In function 'int main()':
0_0_13729239_29430.cpp:22:9: error: 'mp' was not declared in this scope
         mp.clear();
         ^