View Compilation Error

0_0_36680596_28051.cpp:35:1: error: 'map' does not name a type
 map<int,int>mp;
 ^
0_0_36680596_28051.cpp: In function 'int main()':
0_0_36680596_28051.cpp:45:1: error: 'mp' was not declared in this scope
 mp.clear();
 ^