View Compilation Error

0_0_17418449_26495.cpp:12:1: error: 'map' does not name a type
 map<string,int> m;
 ^
0_0_17418449_26495.cpp:13:1: error: 'map' does not name a type
 map<string,int>::iterator it;
 ^
0_0_17418449_26495.cpp: In function 'int main(int, const char**)':
0_0_17418449_26495.cpp:34:13: error: 'm' was not declared in this scope
             m[a]++;
             ^
0_0_17418449_26495.cpp:42:13: error: 'it' was not declared in this scope
         for(it = m.begin(); it != m.endl(); it++)
             ^
0_0_17418449_26495.cpp:42:18: error: 'm' was not declared in this scope
         for(it = m.begin(); it != m.endl(); it++)
                  ^