View Compilation Error

0_0_29411209_6616.cpp: In function 'void solve()':
0_0_29411209_6616.cpp:28:49: error: 'memset' was not declared in this scope
   flag = false, memset( ans, INF, sizeof( ans ) );
                                                 ^
0_0_29411209_6616.cpp:30:21: error: 'strcmp' was not declared in this scope
   if ( strcmp( s, e ) == 0 ) flag = true;
                     ^