View Compilation Error

0_0_16361212_2319.cpp: In function 'int main()':
0_0_16361212_2319.cpp:52:30: error: 'memset' was not declared in this scope
     memset(dp, -1, sizeof(dp));  
                              ^
0_0_16361212_2319.cpp:54:5: error: 'cin' was not declared in this scope
     cin >> T;  
     ^