View Compilation Error

0_0_26112038_6182.cpp:6:11: error: '::main' must return 'int'
 void main()
           ^
0_0_26112038_6182.cpp: In function 'int main()':
0_0_26112038_6182.cpp:13:25: error: 'memset' was not declared in this scope
    memset(dp,0,sizeof dp);
                         ^