View Compilation Error

0_0_18883790_19156.cpp: In function 'int main()':
0_0_18883790_19156.cpp:16:9: error: 'll' was not declared in this scope
         ll ans = 1;
         ^
0_0_18883790_19156.cpp:20:16: error: expected ';' before 't'
             ll t = ceil(s/v);
                ^
0_0_18883790_19156.cpp:21:19: error: 't' was not declared in this scope
             v = s/t;
                   ^
0_0_18883790_19156.cpp:22:13: error: 'ans' was not declared in this scope
             ans += t;
             ^
0_0_18883790_19156.cpp:24:42: error: 'ans' was not declared in this scope
         printf("Case #%d: %I64d\n",++cas,ans);
                                          ^