View Compilation Error

0_0_14679482_5650.cpp: In function 'int main()':
0_0_14679482_5650.cpp:59:35: error: 'memset' was not declared in this scope
         memset(vist,0,sizeof(vist));
                                   ^
0_0_14679482_5650.cpp:74:13: error: expected '}' at end of input
     return 0;
             ^