View Compilation Error

0_0_23511649_9696.cpp: In function 'void init()':
0_0_23511649_9696.cpp:31:5: error: 'template<class _Key, class _Tp, class _Compare, class _Alloc> class std::map' used without template parameters
     map::iterator it;
     ^
0_0_23511649_9696.cpp:32:9: error: 'it' was not declared in this scope
     for(it=mp.begin();it!=mp.end();++it){
         ^
0_0_23511649_9696.cpp: In function 'int main()':
0_0_23511649_9696.cpp:92:17: error: 'T' was not declared in this scope
     scanf("%d",&T);
                 ^