View Compilation Error

0_0_36808817_13893.cpp: In function 'int main()':
0_0_36808817_13893.cpp:22:13: error: 'map' was not declared in this scope
         for(map<string, int>::iterator it = shop.begin(); it != shop.end(); it++){
             ^
0_0_36808817_13893.cpp:22:23: error: expected primary-expression before ',' token
         for(map<string, int>::iterator it = shop.begin(); it != shop.end(); it++){
                       ^
0_0_36808817_13893.cpp:22:25: error: expected primary-expression before 'int'
         for(map<string, int>::iterator it = shop.begin(); it != shop.end(); it++){
                         ^
0_0_36808817_13893.cpp:22:59: error: 'it' was not declared in this scope
         for(map<string, int>::iterator it = shop.begin(); it != shop.end(); it++){
                                                           ^